Package 'GenVisR'

Title: Genomic Visualizations in R
Description: Produce highly customizable publication quality graphics for genomic data primarily at the cohort level.
Authors: Zachary Skidmore [aut, cre], Alex Wagner [aut], Robert Lesurf [aut], Katie Campbell [aut], Jason Kunisaki [aut], Obi Griffith [aut], Malachi Griffith [aut]
Maintainer: Zachary Skidmore <[email protected]>
License: GPL-3 + file LICENSE
Version: 1.39.0
Built: 2024-11-19 04:00:39 UTC
Source: https://github.com/bioc/GenVisR

Help Index


Truncated BRCA MAF file

Description

A data set containing 50 samples corresponding to "Breast invasive carcinoma" originating from the TCGA project in .maf format (version 2.4): https://wiki.nci.nih.gov/display/TCGA/TCGA+MAF+Files#TCGAMAFFiles-BRCA:Breastinvasivecarcinoma, /dccfiles_prod/tcgafiles/distro_ftpusers/anonymous/tumor/brca/gsc/genome.wustl.edu/illuminaga_dnaseq/mutations/genome.wustl.edu_BRCA.IlluminaGA_DNASeq.Level_2.5.3.0/genome.wustl.edu_BRCA.IlluminaGA_DNASeq.Level_2.5.3.0.somatic.maf

Usage

data(brcaMAF)

Format

a data frame with 2773 observations and 55 variables

Value

Object of class data drame


Class Clinical

Description

An S4 class to store clinical information and plots, under development!!!

Usage

Clinical(
  path,
  inputData = NULL,
  inputFormat = c("wide", "long"),
  legendColumns = 1,
  palette = NULL,
  clinicalLayers = NULL,
  verbose = FALSE
)

Arguments

path

String specifying the path to clinical data, file must have the column "sample".

inputData

Optional data.table or data.frame object holding clinical data, used only if path is not specified. Data must have the column "sample".

inputFormat

String specifying the input format of the data given, one of wide or long format (see details).

legendColumns

Integer specifying the number of columns in the legend.

palette

Named character vector supplying colors for clinical variables.

clinicalLayers

list of ggplot2 layers to be passed to the plot.

verbose

Boolean specifying if progress should be reported.

Details

The Clinical() function is a constructor to create a GenVisR object of class Clinical. This is used to both display clinical data in the form of a heatmap and to add clinical data to various GenVisR plots. Input to this function can be either the path to a file containing clinical information using the parameter "path", or alternatively a data.table object if this information into R. By default the input is assumed to be in a wide format where each variable has it's own column, in such cases the data will be coerced into a long format where there is a key->value pair mapping to the data. The assumption of "wide"/"long" format can be changed with the "inputFormat" parameter, in both cases there should be a column called "sample" within the data supplied which is used as an id variable.

Slots

clinicalGrob

gtable object for the clinical plot.

clinicalLayers

list of ggtheme or ggproto objects used to build the plot.

clinicalData

data.table object to store clinical data

See Also

getData

drawPlot


Construct copy-number frequency plot

Description

Given a data frame construct a plot to display copy number changes across the genome for a group of samples.

Usage

cnFreq(
  x,
  CN_low_cutoff = 1.5,
  CN_high_cutoff = 2.5,
  plot_title = NULL,
  CN_Loss_colour = "#002EB8",
  CN_Gain_colour = "#A30000",
  x_title_size = 12,
  y_title_size = 12,
  facet_lab_size = 10,
  plotLayer = NULL,
  plotType = "proportion",
  genome = "hg19",
  plotChr = NULL,
  out = "plot"
)

Arguments

x

Object of class data frame with rows representing genomic segments. The data frame must contain columns with the following names "chromosome", "start", "end", "segmean", and "sample". Coordinates should be 1-based space.

CN_low_cutoff

Numeric value representing the point at or below which copy number alterations are considered losses. Only used if x represents CN values.

CN_high_cutoff

Numeric value representing the point at or above which copy number alterations are considered gains. Only used if x represents CN values.

plot_title

Character string specifying the title to display on the plot.

CN_Loss_colour

Character string specifying the colour value for copy number losses.

CN_Gain_colour

Character string specifying the colour value for copy number gains.

x_title_size

Integer specifying the size of the x-axis title.

y_title_size

Integer specifying the size of the y-axis title.

facet_lab_size

Integer specifying the size of the faceted labels plotted.

plotLayer

Valid ggplot2 layer to be added to the plot.

plotType

Character string specifying the type of values to plot. One of "proportion" or "frequency"

genome

Character string specifying a valid UCSC genome (see details).

plotChr

Character vector specifying specific chromosomes to plot, if NULL all chromosomes for the genome selected are displayed.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Details

cnFreq requires the location of chromosome boundaries for a given genome assembly in order to ensure the entire chromosome space is plotted. As a convenience this information is available to cnSpec for the following genomes "hg19", "hg38", "mm9", "mm10", "rn5" and can be retrieved by supplying one of the afore mentioned assemblies via the 'genome' parameter. If a genome assembly is supplied to the 'genome' parameter and is unrecognized cnSpec will attempt to query the UCSC MySQL database for the required information. If genomic segments are not identical across all samples the algorithm will attempt to perform a disjoin operation splitting existing segments such that there are no overlaps. The 'plotLayer' parameter can be used to add an additional layer to the ggplot2 graphic (see vignette).

Value

One of the following, a dataframe containing data to be plotted, a grob object, or a plot.

Examples

# plot on internal GenVisR dataset
cnFreq(LucCNseg)

Construct copy-number cohort plot

Description

Given a data frame construct a plot to display copy-number calls for a cohort of samples.

Usage

cnSpec(
  x,
  y = NULL,
  genome = "hg19",
  plot_title = NULL,
  CN_Loss_colour = "#002EB8",
  CN_Gain_colour = "#A30000",
  x_title_size = 12,
  y_title_size = 12,
  facet_lab_size = 10,
  plotLayer = NULL,
  out = "plot",
  CNscale = "absolute"
)

Arguments

x

Object of class data frame with rows representing copy-number segment calls. The data frame must contain columns with the following names "chromosome", "start", "end", "segmean", "sample".

y

Object of class data frame with rows representing chromosome boundaries for a genome assembly. The data frame must contain columns with the following names "chromosome", "start", "end" (optional: see details).

genome

Character string specifying a valid UCSC genome (see details).

plot_title

Character string specifying title to display on the plot.

CN_Loss_colour

Character string specifying the colour value of copy number losses.

CN_Gain_colour

Character string specifying the colour value of copy number gains.

x_title_size

Integer specifying the size of the x-axis title.

y_title_size

Integer specifying the size of the y-axis title.

facet_lab_size

Integer specifying the size of the faceted labels plotted.

plotLayer

Valid ggplot2 layer to be added to the plot.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

CNscale

Character string specifying if copy number calls supplied are relative (i.e.copy neutral == 0) or absolute (i.e. copy neutral ==2). One of "relative" or "absolute"

Details

cnSpec requires the location of chromosome boundaries for a given genome assembly in order to ensure the entire chromosome space is plotted. As a convenience this information is available to cnSpec for the following genomes "hg19", "hg38", "mm9", "mm10", "rn5" and can be retrieved by supplying one of the afore mentioned assemblies via the 'genome' parameter. If a genome assembly is supplied to the 'genome' parameter and is unrecognized cnSpec will attempt to query the UCSC MySQL database for the required information. If chromosome boundary locations are unavailable for a given assembly or if it is desireable to plot a specific region encapsulating the copy number data these boundaries can be supplied to the 'y' paramter which has priority of the parameter 'genome'.

The 'plotLayer' parameter can be used to add an additional layer to the ggplot2 graphic (see vignette).

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

cnSpec(LucCNseg, genome="hg19")

Construct copy-number single sample plot

Description

Given a data frame construct a plot to display raw copy number calls for a single sample.

Usage

cnView(
  x,
  y = NULL,
  z = NULL,
  genome = "hg19",
  chr = "chr1",
  CNscale = "absolute",
  ideogram_txtAngle = 45,
  ideogram_txtSize = 5,
  plotLayer = NULL,
  ideogramLayer = NULL,
  out = "plot",
  segmentColor = NULL
)

Arguments

x

Object of class data frame with rows representing copy number calls from a single sample. The data frame must contain columns with the following names "chromosome", "coordinate", "cn", and optionally "p_value" (see details).

y

Object of class data frame with rows representing cytogenetic bands for a chromosome. The data frame must contain columns with the following names "chrom", "chromStart", "chromEnd", "name", "gieStain" for plotting the ideogram (optional: see details).

z

Object of class data frame with row representing copy number segment calls. The data frame must contain columns with the following names "chromosome", "start", "end", "segmean" (optional: see details)

genome

Character string specifying a valid UCSC genome (see details).

chr

Character string specifying which chromosome to plot one of "chr..." or "all"

CNscale

Character string specifying if copy number calls supplied are relative (i.e.copy neutral == 0) or absolute (i.e. copy neutral ==2). One of "relative" or "absolute"

ideogram_txtAngle

Integer specifying the angle of cytogenetic labels on the ideogram subplot.

ideogram_txtSize

Integer specifying the size of cytogenetic labels on the ideogram subplot.

plotLayer

Valid ggplot2 layer to be added to the copy number plot.

ideogramLayer

Valid ggplot2 layer to be added to the ideogram sub-plot.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

segmentColor

Character string specifying the color of segment lines. Used only if Z is not null.

Details

cnView is able to plot in two modes specified via the 'chr' parameter, these modes are single chromosome view in which an ideogram is displayed and genome view where chromosomes are faceted. For the single chromosome view cytogenetic band information is required giving the coordinate, stain, and name of each band. As a convenience cnView stores this information for the following genomes "hg19", "hg38", "mm9", "mm10", and "rn5". If the genome assembly supplied to the 'genome' parameter is not one of the 5 afore mentioned genome assemblies cnView will attempt to query the UCSC MySQL database to retrieve this information. Alternatively the user can manually supply this information as a data frame to the 'y' parameter, input to the 'y' parameter take precedence of input to 'genome'.

cnView is also able to represent p-values for copy-number calls if they are supplied via the "p_value" column in the argument supplied to x. The presence of this column in x will set a transparency value to copy-number calls with calls of less significance becoming more transparent.

If it is available cnView can plot copy-number segment calls on top of raw calls supplied to parameter 'x' via the parameter 'z'.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Create data
chromosome <- 'chr14'
coordinate <- sort(sample(0:106455000, size=2000, replace=FALSE))
cn <- c(rnorm(300, mean=3, sd=.2), rnorm(700, mean=2, sd=.2), rnorm(1000, mean=3, sd=.2))
data <- as.data.frame(cbind(chromosome, coordinate, cn))

# Plot raw copy number calls
cnView(data, chr='chr14', genome='hg19', ideogram_txtSize=4)

Construct identity snp comparison plot

Description

Given the bam file path, count the number of reads at the 24 SNP locations

Usage

compIdent(
  x,
  genome,
  target = NULL,
  debug = FALSE,
  mainLayer = NULL,
  covLayer = NULL,
  out = "plot"
)

Arguments

x

data frame with rows representing samples and column names "sample_name", "bamfile". Columns should correspond to a sample name and a bam file path.

genome

Object of class BSgenome specifying the genome.

target

Object of class data frame containing target locations in 1-base format and containing columns names "chr", "start", "end", "var", "name". Columns should correspond to chromosome, start, end, variant allele, name of location.

debug

Boolean specifying if test datasets should be used for debugging.

mainLayer

Valid ggplot2 layer for altering the main plot.

covLayer

Valid ggplot2 layer for altering the coverage plot.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Details

compIdent is a function designed to comppare samples via variant allele frequencies (VAF) at specific sites. By default these sites correspond to 24 identity snps originating from the hg19 assembly however the user can specify alternate sites via the target paramter. To view the 24 identity snp locations use GenVisR::SNPloci.

Samples from the same origin are expected to have similar VAF values however results can skew based on copy number alterations (CNA). The user is expected to ensure no CNA occur at the 24 identity snp sites.

For display and debugging purposes a debug parameter is available which will use predefined data instead of reading in bam files. Note that data in the debug parameter is only available at the afore mentioned 24 sites.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Read in BSgenome object (hg19)
library(BSgenome.Hsapiens.UCSC.hg19)
hg19 <- BSgenome.Hsapiens.UCSC.hg19

# Generate plot
compIdent(genome=hg19, debug=TRUE)

Construct an overall coverage cohort plot

Description

Given a matrix construct a plot to display sequencing depth acheived as percentage bars for a cohort of samples.

Usage

covBars(
  x,
  colour = NULL,
  plot_title = NULL,
  x_title_size = 12,
  y_title_size = 12,
  facet_lab_size = 10,
  plotLayer = NULL,
  out = "plot"
)

Arguments

x

Object of class matrix with rows representing the sequencing depth (i.e. number of reads) and columns corresponding to each sample in the cohort and elements of the matrix

colour

Character vector specifying colours to represent sequencing depth.

plot_title

Character string specifying the title to display on the plot.

x_title_size

Integer specifying the size of the x-axis title.

y_title_size

Integer specifying the size of the y-axis title.

facet_lab_size

Integer specifying the size of the faceted labels plotted.

plotLayer

Valid ggplot2 layer to be added to the plot.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Create data
x <- matrix(sample(100000,500), nrow=50, ncol=10, dimnames=list(0:49,paste0("Sample",1:10)))

# Call plot function
covBars(x)

Cytogenetic banding dataset

Description

A data set containing cytogenetic band information for all chromosomes in the following genomes "hg38", "hg19", "mm10", "mm9", "rn5", obtained from the UCSC sql database at genome-mysql.cse.ucsc.edu.

Usage

data(cytoGeno)

Format

a data frame with 3207 observations and 6 variables

Value

Object of class data frame


Method drawPlot

Description

Method drawPlot

Usage

drawPlot(object, ...)

## S4 method for signature 'Clinical'
drawPlot(object, ...)

## S4 method for signature 'Lolliplot'
drawPlot(object, ...)

## S4 method for signature 'MutSpectra'
drawPlot(object, ...)

## S4 method for signature 'Rainfall'
drawPlot(object, ...)

## S4 method for signature 'Waterfall'
drawPlot(object, ...)

Arguments

object

Object of class Waterfall, MutSpectra, or Clinical

...

additional arguments to passed

Details

The drawPlot method is used to draw plots created by GenVisR plot constructor functions.


Construct a region of interest coverage plot

Description

Given a list of data frames construct a sequencing coverage view over a region of interest.

Usage

genCov(
  x,
  txdb,
  gr,
  genome,
  reduce = FALSE,
  gene_colour = NULL,
  gene_name = "Gene",
  gene_plotLayer = NULL,
  label_bgFill = "black",
  label_txtFill = "white",
  label_borderFill = "black",
  label_txtSize = 10,
  lab2plot_ratio = c(1, 10),
  cov_colour = "blue",
  cov_plotType = "point",
  cov_plotLayer = NULL,
  base = c(10, 2, 2),
  transform = c("Intron", "CDS", "UTR"),
  gene_labelTranscript = TRUE,
  gene_labelTranscriptSize = 4,
  gene_isoformSel = NULL,
  out = "plot",
  subsample = FALSE
)

Arguments

x

Named list with list elements containing data frames representing samples. Data frame rows should represent read pileups observed in sequencing data. Data frame column names must include "end" and "cov" corresponding to the base end position and coverage of a pileup respectively. Data within data frames must be on the same chromosome as the region of interest, see details!

txdb

Object of class TxDb giving transcription meta data for a genome assembly. See Bioconductor annotation packages.

gr

Object of class GRanges specifying the region of interest and corresponding to a single gene. See Bioconductor package GRanges.

genome

Object of class BSgenome specifying the genome sequence of interest. See Bioconductor annotation packages.

reduce

Boolean specifying whether to collapse gene isoforms within the region of interest into one representative transcript. Experimental use with caution!

gene_colour

Character string specifying the colour of the gene to be plotted in the gene track.

gene_name

Character string specifying the name of the gene or region of interest.

gene_plotLayer

Valid ggplot2 layer to be added to the gene sub-plot.

label_bgFill

Character string specifying the desired background colour of the track labels.

label_txtFill

Character string specifying the desired text colour of the track labels.

label_borderFill

Character string specifying the desired border colour of the track labels.

label_txtSize

Integer specifying the size of the text within the track labels.

lab2plot_ratio

Numeric vector of length 2 specifying the ratio of track labels to plot space.

cov_colour

Character string specifying the colour of the data in the coverage plots.

cov_plotType

Character string specifying one of "line", "bar" or "point". Changes the ggplot2 geom which constructs the data display.

cov_plotLayer

Valid ggplot2 layer to be added to the coverage sub-plots.

base

Numeric vector of log bases to transform the data corresponding to the elements supplied to the variable transform See details.

transform

Character vector specifying what objects to log transform, accepts "Intron", "CDS", and "UTR" See details.

gene_labelTranscript

Boolean specifying whether to plot the transcript names in the gene plot.

gene_labelTranscriptSize

Integer specifying the size of the transcript name text in the gene plot.

gene_isoformSel

Character vector specifying the names (from the txdb object) of isoforms within the region of interest to display.

out

Character vector specifying the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

subsample

Boolean value specifying whether to reduce the provided coverage data to a subset of approximately 1000 points. Used to generate sparse plots that use less disk space and are faster to render.

Details

genCov is a function designed construct a series of tracks based on a TxDb object giving transcript features, and coverage data supplied to parameter 'x'. The function will look at a region of interest specified by the argument supplied to gr and plot transcript features and the corresponding coverage information. The argument supplied to 'genome' enables gc content within genomic features to be calculated and displayed. The argument supplied to x must contain data on the same chromosome as the region of interest specified in the parameter 'gr'!

Typically, introns of a transcript are much larger than exons, while exons are sometimes of greater interest. To address this, genCov will by default scale the x-axis to expand track information according to region type: coding sequence (CDS), untranslated region (UTR), or intron / intergenic (Intron). The amount by which each region is scaled is controlled by the 'base' and 'transform' arguments. 'transform' specifies which regions to scale, and 'base' corresponds to the log base transform to apply to those regions. To keep one or more region types from being scaled, omit the corresponding entries from the 'base' and 'transform' vectors.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Load transcript meta data
library(TxDb.Hsapiens.UCSC.hg19.knownGene)
txdb <- TxDb.Hsapiens.UCSC.hg19.knownGene

# Load BSgenome
library(BSgenome.Hsapiens.UCSC.hg19)
genome <- BSgenome.Hsapiens.UCSC.hg19

# Define a region of interest
gr <- GRanges(seqnames=c("chr10"),
ranges=IRanges(start=c(89622195), end=c(89729532)), strand=strand(c("+")))

# Create Data for input
start <- c(89622194:89729524)
end <- c(89622195:89729525)
chr <- 10
cov <- c(rnorm(100000, mean=40), rnorm(7331, mean=10))
cov_input_A <- as.data.frame(cbind(chr, start, end, cov))

start <- c(89622194:89729524)
end <- c(89622195:89729525)
chr <- 10
cov <- c(rnorm(50000, mean=40), rnorm(7331, mean=10), rnorm(50000, mean=40))
cov_input_A <- as.data.frame(cbind(chr, start, end, cov))

# Define the data as a list
data <- list("Sample A"=cov_input_A)

# Call genCov
genCov(data, txdb, gr, genome, gene_labelTranscriptSize=3)

Construct a gene-features plot

Description

Given a GRanges object specifying a region of interest, plot genomic features within that region.

Usage

geneViz(
  txdb,
  gr,
  genome,
  reduce = FALSE,
  gene_colour = NULL,
  base = c(10, 2, 2),
  transform = c("Intron", "CDS", "UTR"),
  isoformSel = NULL,
  labelTranscript = TRUE,
  labelTranscriptSize = 4,
  plotLayer = NULL
)

Arguments

txdb

Object of class TxDb giving transcription meta data for a genome assembly. See Bioconductor annotation packages.

gr

Object of class GRanges specifying the region of interest and corresponding to a single gene. See Bioconductor package GRanges.

genome

Object of class BSgenome specifying the genome sequence of interest. See Bioconductor annotation packages.

reduce

Boolean specifying whether to collapse gene isoforms within the region of interest into one representative transcript. Experimental use with caution!

gene_colour

Character string specifying the colour of the gene to be plotted.

base

Numeric vector of log bases to transform the data corresponding to the elements supplied to the variable transform See details.

transform

Character vector specifying what objects to log transform, accepts "Intron", "CDS", and "UTR" See details.

isoformSel

Character vector specifying the names (from the txdb object) of isoforms within the region of interest to display.

labelTranscript

Boolean specifying whether to plot the transcript names in the gene plot.

labelTranscriptSize

Integer specifying the size of the transcript name text in the gene plot.

plotLayer

Valid ggplot2 layer to be added to the gene plot.

Details

geneViz is an internal function which will output a list of three elements. As a convenience the function is exported however to obtain the plot from geneViz the user must call the first element of the list. geneViz is intended to plot gene features within a single gene with boundaries specified by the GRanges object, plotting more that one gene is advised against.

Typically, introns of a transcript are much larger than exons, while exons are sometimes of greater interest. To address this, genCov will by default scale the x-axis to expand track information according to region type: coding sequence (CDS), untranslated region (UTR), or intron / intergenic (Intron). The amount by which each region is scaled is controlled by the 'base' and 'transform' arguments. 'transform' specifies which regions to scale, and 'base' corresponds to the log base transform to apply to those regions. To keep one or more region types from being scaled, omit the corresponding entries from the 'base' and 'transform' vectors.

Value

object of class list with list elements containing a ggplot object, the gene features within the plot as a data frame, and mapping information of the gene features within the ggplot object.

Examples

# need transcript data for reference
library(TxDb.Hsapiens.UCSC.hg19.knownGene)
txdb <- TxDb.Hsapiens.UCSC.hg19.knownGene

# need a biostrings object for reference
library(BSgenome.Hsapiens.UCSC.hg19)
genome <- BSgenome.Hsapiens.UCSC.hg19

# need Granges object
gr <- GRanges(seqnames=c("chr10"),
ranges=IRanges(start=c(89622195), end=c(89729532)), strand=strand(c("+")))

# Plot the graphic
geneViz(txdb, gr, genome)

GenVisR

Description

A visualization library designed to make publications quality figures for genomic datasets.

References

GenVisR: Genomic Visualizations in R

See Also

GenVisR github page

GenVisR bioconductor page


Method getData

Description

Method getData

Helper function to get data from classes

Helper function to getData from classes, under development!!!

Helper function to get data from classes

Helper function to getData from classes, under development!!!

Usage

getData(object, ...)

## S4 method for signature 'Clinical'
getData(object, ...)

## S4 method for signature 'ClinicalData'
getData(object, ...)

.getData_Lolliplot(object, name = NULL, index = NULL, ...)

## S4 method for signature 'LolliplotData'
getData(object, name = NULL, index = NULL, ...)

## S4 method for signature 'Lolliplot'
getData(object, name = NULL, index = NULL, ...)

.getData_MutSpectra(object, name = NULL, index = NULL, ...)

## S4 method for signature 'MutSpectraPrimaryData'
getData(object, name = NULL, index = NULL, ...)

## S4 method for signature 'MutSpectra'
getData(object, name = NULL, index = NULL, ...)

.getData_Rainfall(object, name = NULL, index = NULL, ...)

## S4 method for signature 'RainfallPrimaryData'
getData(object, name = NULL, index = NULL, ...)

## S4 method for signature 'Rainfall'
getData(object, name = NULL, index = NULL, ...)

.getData_waterfall(object, name = NULL, index = NULL, ...)

## S4 method for signature 'WaterfallData'
getData(object, name = NULL, index = NULL, ...)

## S4 method for signature 'Waterfall'
getData(object, name = NULL, index = NULL, ...)

Arguments

object

Object of class Clinical,

...

additional arguments to passed

name

String corresponding to the slot for which to extract data from.

index

Integer specifying the slot for which to extract data from.

Details

The getData method is an accessor function used to access data held in GenVisR objects.


Method getDescription

Description

Method getDescription

Usage

getDescription(object, ...)

## S4 method for signature 'VEP_Virtual'
getDescription(object, ...)

## S4 method for signature 'VEP'
getDescription(object, ...)

Arguments

object

Object of class VEP

...

additional arguments to passed


Method getGrob

Description

Method getGrob

Usage

getGrob(object, ...)

## S4 method for signature 'LolliplotPlots'
getGrob(object, index = 1, ...)

## S4 method for signature 'Lolliplot'
getGrob(object, index = 1, ...)

## S4 method for signature 'MutSpectraPlots'
getGrob(object, index = 1, ...)

## S4 method for signature 'MutSpectra'
getGrob(object, index = 1, ...)

## S4 method for signature 'RainfallPlots'
getGrob(object, index = 1, ...)

## S4 method for signature 'Rainfall'
getGrob(object, index = 1, ...)

## S4 method for signature 'WaterfallPlots'
getGrob(object, index = 1, ...)

## S4 method for signature 'Waterfall'
getGrob(object, index = 1, ...)

Arguments

object

Object of clas MutSpectra

...

additional arguments to passed

index

integer specifying the plot index to extract


Method getHeader

Description

Method getHeader

Usage

getHeader(object, ...)

## S4 method for signature 'VEP_Virtual'
getHeader(object, ...)

## S4 method for signature 'VEP'
getHeader(object, ...)

Arguments

object

Object of class VEP

...

additional arguments to passed


Method getMeta

Description

Method getMeta

Usage

getMeta(object, ...)

## S4 method for signature 'GMS_Virtual'
getMeta(object, ...)

## S4 method for signature 'GMS'
getMeta(object, ...)

## S4 method for signature 'MutationAnnotationFormat_Virtual'
getMeta(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getMeta(object, ...)

## S4 method for signature 'VEP_Virtual'
getMeta(object, ...)

## S4 method for signature 'VEP'
getMeta(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Method getMutation

Description

Method getMutation

Usage

getMutation(object, ...)

## S4 method for signature 'GMS_Virtual'
getMutation(object, ...)

## S4 method for signature 'GMS'
getMutation(object, ...)

## S4 method for signature 'MutationAnnotationFormat_Virtual'
getMutation(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getMutation(object, ...)

## S4 method for signature 'VEP_Virtual'
getMutation(object, ...)

## S4 method for signature 'VEP'
getMutation(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Method getPath

Description

Method getPath

Usage

getPath(object, ...)

## S4 method for signature 'GMS'
getPath(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getPath(object, ...)

## S4 method for signature 'VEP'
getPath(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Method getPosition

Description

Method getPosition

Usage

getPosition(object, ...)

## S4 method for signature 'GMS_Virtual'
getPosition(object, ...)

## S4 method for signature 'GMS'
getPosition(object, ...)

## S4 method for signature 'MutationAnnotationFormat_Virtual'
getPosition(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getPosition(object, ...)

## S4 method for signature 'VEP_Virtual'
getPosition(object, ...)

## S4 method for signature 'VEP'
getPosition(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Method getSample

Description

Method getSample

Usage

getSample(object, ...)

## S4 method for signature 'GMS_Virtual'
getSample(object, ...)

## S4 method for signature 'GMS'
getSample(object, ...)

## S4 method for signature 'MutationAnnotationFormat_Virtual'
getSample(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getSample(object, ...)

## S4 method for signature 'VEP_Virtual'
getSample(object, ...)

## S4 method for signature 'VEP'
getSample(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Method getVersion

Description

Method getVersion

Usage

getVersion(object, ...)

## S4 method for signature 'GMS'
getVersion(object, ...)

## S4 method for signature 'MutationAnnotationFormat'
getVersion(object, ...)

## S4 method for signature 'VEP'
getVersion(object, ...)

Arguments

object

Object of class VEP, GMS, or MutationAnnotationFormat

...

additional arguments to passed


Class GMS_v4

Description

An S4 class to represent data in gms annotation version 4, inherits from the GMS_Virtual class.

Usage

GMS_v4(gmsData)

Arguments

gmsData

data.table object containing a gms annotation file conforming to the version 4 specifications.

Slots

position

data.table object containing column names "chromosome_name", "start", "stop".

mutation

data.table object containing column names "reference", "variant", "trv_type".

sample

data.table object containing columns names "sample".

meta

data.table object containing meta data.


Class GMS_Virtual

Description

An S4 class to act as a virtual class for GMS version sub-classes.

Slots

position

data.table object holding genomic positions.

mutation

data.table object holding mutation status data.

sample

data.table object holding sample data.

meta

data.table object holding all other meta data.


Class GMS

Description

An S4 class for Genome Modeling System annotation files, under development!!!

Usage

GMS(path, data = NULL, version = 4, verbose = FALSE)

Arguments

path

String specifying the path to a GMS annotation file. Can accept wildcards if multiple GMS annotation files exist (see details).

data

data.table object storing a GMS annotation file. Overrides "path" if specified.

version

String specifying the version of the GMS files, Defaults to version 4.

verbose

Boolean specifying if progress should be reported while reading in the GMS files.

Details

When specifying a path to a GMS annotation file the option exist to either specify the full path to an annotation file or to use wildcards to specify multiple files. When specifying a full path the initalizer will check if a column named "sample" containg the relevant sample for each row exists. If such a column is not found the initalizer will assume this file corresponds to only one sample and populate a sample column accordingly. Alternatively if multiple files are specified at once using a wildcard, the initalizer will aggregate all the files and use the file names minus any extension top populate sample names. The version defaults to 4 which is the default value of the GMS annotator. This value will need to be changed only if files were created using a different GMS annotator version.

Slots

path

Character string specifying the paths of the GMS files read in.

version

Numeric value specifying the version of the GMS annotation files.

gmsObject

gms object which inherits from gms_Virtual class.

See Also

Waterfall

MutSpectra


Germline Calls

Description

A data set containing downsampled Germline calls originating from the HCC1395 breast cancer cell line.

Usage

data(HCC1395_Germline)

Format

a data frame with 9200 observations and 5 variables

Value

Object of class data frame


Normal BAM

Description

A data set containing read pileups intersecting 24 identity snp locations from GenVisR::SNPloci. Pileups are from downsampled bams and originate from normal tissue corresponding to the HCC1395 breast cancer cell line.

Usage

data(HCC1395_N)

Format

a data frame with 59 observations and 6 variables

Value

Object of class list


Tumor BAM

Description

A data set containing read pileups intersecting 24 identity snp locations from GenVisR::SNPloci. Pileups are from downsampled bams and originate from tumor tissue corresponding to the HCC1395 breast cancer cell line.

Usage

data(HCC1395_T)

Format

a data frame with 52 observations and 6 variables

Value

Object of class list


hg19 chromosome boundaries

Description

A data set containg chromosome boundaries corresponding to hg19.

Usage

data(hg19chr)

Format

a data frame with 24 observations and 3 variables

Value

Object of class data frame


Construct an ideogram

Description

Given a data frame with cytogenetic information, construct an ideogram.

Usage

ideoView(
  x,
  chromosome = "chr1",
  txtAngle = 45,
  txtSize = 5,
  plotLayer = NULL,
  out = "plot"
)

Arguments

x

Object of class data frame with rows representing cytogenetic bands. The data frame must contain the following column names "chrom", "chromStart", "chromEnd", "name", "gieStain"

chromosome

Character string specifying which chromosome from the "chrom" column in the argument supplied to parameter x to plot.

txtAngle

Integer specifying the angle of text labeling cytogenetic bands.

txtSize

Integer specifying the size of text labeling cytogenetic bands.

plotLayer

additional ggplot2 layers for the ideogram

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Details

ideoView is a function designed to plot cytogenetic band inforamtion. Modifications to the graphic object can be made via the 'plotLayer' parameter, see vignette for details.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Obtain cytogenetic information for the genome of interest from attached
# data set cytoGeno
data <- cytoGeno[cytoGeno$genome == 'hg38',]

# Call ideoView for chromosome 1
ideoView(data, chromosome='chr1', txtSize=4)

Plot LOH data

Description

Construct a graphic visualizing Loss of Heterozygosity in a cohort

Usage

lohSpec(
  x = NULL,
  path = NULL,
  fileExt = NULL,
  y = NULL,
  genome = "hg19",
  gender = NULL,
  step = 1e+06,
  window_size = 2500000,
  normal = 0.5,
  colourScheme = "inferno",
  plotLayer = NULL,
  method = "slide",
  out = "plot"
)

Arguments

x

object of class data frame with rows representing germline calls. The data frame must contain columns with the following names "chromosome", "position", "n_vaf", "t_vaf", "sample". required if path is set to NULL (see details). vaf should range from 0-1.

path

Character string specifying the path to a directory containing germline calls for each sample. Germline calls are expected to be stored as tab-seperated files which contain the following column names "chromosome", "position", "n_vaf", "t_vaf", and "sample". required if x is set to null (see details).

fileExt

Character string specifying the file extensions of files within the path specified. Required if argument is supplied to path (see details).

y

Object of class data frame with rows representing chromosome boundaries for a genome assembly. The data frame must contain columns with the following names "chromosome", "start", "end" (optional: see details).

genome

Character string specifying a valid UCSC genome (see details).

gender

Character vector of length equal to the number of samples, consisting of elements from the set "M", "F". Used to suppress the plotting of allosomes where appropriate.

step

Integer value specifying the step size (i.e. the number of base pairs to move the window). required when method is set to slide (see details).

window_size

Integer value specifying the size of the window in base pairs in which to calculate the mean Loss of Heterozygosity (see details).

normal

Numeric value within the range 0-1 specifying the expected normal variant allele frequency to be used in Loss of Heterozygosity calculations. defaults to .50%

colourScheme

Character vector specifying the colour scale to use from the viridis package. One of "viridis", "magma", "plasma", or "inferno".

plotLayer

Valid ggpot2 layer to be added to the plot.

method

character string specifying the approach to be used for displaying Loss of Heterozygosity, one of "tile" or "slide" (see details).

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Details

lohSpec is intended to plot the loss of heterozygosity (LOH) within a sample. As such lohSpec expects input data to contain only LOH calls. Input can be supplied as a single data frame given to the argument x with rows containing germline calls and variables giving the chromosome, position, normal variant allele frequency, tumor variant allele frequency, and the sample. In lieu of this format a series of .tsv files can be supplied via the path and fileExt arguments. If this method is choosen samples will be infered from the file names. In both cases columns containing the variant allele frequency for normal and tumor samples should range from 0-1. Two methods exist to calculate and display LOH events. If the method is set to "tile" mean LOH is calculated based on the window_size argument with windows being placed next to each other. If the method is set to slide the widnow will slide and calculate the LOH based on the step parameter. In order to ensure the entire chromosome is plotted lohSpec requries the location of chromosome boundaries for a given genome assembly. As a convenience this information is available for the following genomes "hg19", "hg38", "mm9", "mm10", "rn5" and can be tetrieved by supplying one of the afore mentioned assemblies via the 'genome'paramter. If an argument is supplied to the 'genome' parameter and is unrecognized a query to the UCSC MySQL database will be attempted to obtain the required information. If chromosome boundary locations are unavailable for a given assembly this information can be supplied to the 'y' parameter which has priority over the 'genome' parameter.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# plot loh within the example dataset
lohSpec(x=HCC1395_Germline)

Construct LOH chromosome plot

Description

Given a data frame construct a plot to display Loss of Heterozygosity for specific chromosomes.

Usage

lohView(
  x,
  y = NULL,
  genome = "hg19",
  chr = "chr1",
  ideogram_txtAngle = 45,
  ideogram_txtSize = 5,
  plotLayer = NULL,
  ideogramLayer = NULL,
  out = "plot"
)

Arguments

x

object of class data frame with rows representing Heterozygous Germline calls. The data frame must contain columns with the following names "chromosome", "position", "n_vaf", "t_vaf", "sample".

y

Object of class data frame with rows representing cytogenetic bands for a chromosome. The data frame must contain columns with the following names "chrom", "chromStart", "chromEnd", "name", "gieStain" for plotting the ideogram (optional: see details).

genome

Character string specifying a valid UCSC genome (see details).

chr

Character string specifying which chromosome to plot one of "chr..." or "all"

ideogram_txtAngle

Integer specifying the angle of cytogenetic labels on the ideogram subplot.

ideogram_txtSize

Integer specifying the size of cytogenetic labels on the ideogram subplot.

plotLayer

Valid ggplot2 layer to be added to the copy number plot.

ideogramLayer

Valid ggplot2 layer to be added to the ideogram sub-plot.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

Details

lohView is able to plot in two modes specified via the 'chr' parameter, these modes are single chromosome view in which an ideogram is displayed and genome view where chromosomes are faceted. For the single chromosome view cytogenetic band information is required giving the coordinate, stain, and name of each band. As a convenience GenVisR stores this information for the following genomes "hg19", "hg38", "mm9", "mm10", and "rn5". If the genome assembly supplied to the 'genome' parameter is not one of the 5 afore mentioned genome assemblies GenVisR will attempt to query the UCSC MySQL database to retrieve this information. Alternatively the user can manually supply this information as a data frame to the 'y' parameter, input to the 'y' parameter take precedence of input to 'genome'.

A word of caution, users are advised to only use heterozygous germline calls in input to 'x', failure to do so may result in a misleading visual!

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

# Plot loh for chromosome 5
lohView(HCC1395_Germline, chr='chr5', genome='hg19', ideogram_txtSize=4)

Construct a lolliplot

Description

This function has been removed, please use Lolliplot() (capital L) instead!

Usage

lolliplot()

Class Lolliplot

Description

An S4 class for the lolliplot object, under development!!!

Usage

Lolliplot(
  input,
  transcript = NULL,
  species = "hsapiens",
  host = "www.ensembl.org",
  txdb = NULL,
  BSgenome = NULL,
  emphasize = NULL,
  DomainPalette = NULL,
  MutationPalette = NULL,
  labelAA = TRUE,
  plotALayers = NULL,
  plotBLayers = NULL,
  sectionHeights = NULL,
  verbose = FALSE
)

Arguments

input

Object of class MutationAnnotationFormat, GMS, VEP, or a data.table with appropriate columns

transcript

Character string specifying the ensembl transcript for which to plot, should be a transcript which corresponds to the gene parameter.

species

Character string specifying a species when using biomaRt queries

host

Character string specifying a host to connect to when using biomaRt queries

txdb

A bioconoductor txdb object to annotate amino acid positions, required only if amino acid changes are missing (see details).

BSgenome

A bioconductor BSgenome object to annotate amino acid positions, required only if amino acid changes are missing (see details).

emphasize

Character vector specifying a list of mutations to emphasize.

DomainPalette

Character vector specifying the colors used for encoding protein domains

MutationPalette

Character vector specifying the colors used for encoding mutations

labelAA

Boolean specifying if labels should be added to emphasized mutations

plotALayers

list of ggplot2 layers to be passed to the density plot.

plotBLayers

list of ggplot2 layers to be passed to the lolliplot.

sectionHeights

Numeric vector specifying relative heights of each plot section, should sum to one. Expects a value for each section.

verbose

Boolean specifying if status messages should be reported.

Slots

PlotA

gtable object for the top sub-plot

PlotB

gtable object for the bottom sub-plot

Grob

gtable object storing the arranged plot

primaryData

data.table object storing the primary data

geneData

data.table object storing gene and domain coordinates

Examples

# Load a pre-existing data set
dataset <- PIK3CA

# mode 1, amino acid changes are not present

library(TxDb.Hsapiens.UCSC.hg38.knownGene)
library(BSgenome.Hsapiens.UCSC.hg38)
txdb <- TxDb.Hsapiens.UCSC.hg38.knownGene
BSgenome <- BSgenome.Hsapiens.UCSC.hg38

keep <- c("Chromosome", "Start_Position", "End_Position", "Reference_Allele",
          "Tumor_Seq_Allele2", "Tumor_Sample_Barcode", "Gene", "Variant_Classification")
dataset.mode1 <- dataset[,keep]
colnames(dataset.mode1) <- c("chromosome", "start", "stop", "reference", "variant",
                             "sample", "gene", "consequence")


# mode 2, amino acid changes are present

keep <- c("Chromosome", "Start_Position", "End_Position", "Reference_Allele",
          "Tumor_Seq_Allele2", "Tumor_Sample_Barcode", "Gene", "Variant_Classification",
          "Transcript_ID", "HGVSp")
dataset.mode2 <- dataset[,keep]
colnames(dataset.mode2) <- c("chromosome", "start", "stop", "reference", "variant",
                             "sample", "gene", "consequence", "transcript", "proteinCoord")

# run Lolliplot

object <- Lolliplot(dataset.mode1, transcript="ENST00000263967",
                    species="hsapiens", txdb=txdb, BSgenome=BSgenome)
object <- Lolliplot(dataset.mode2, transcript="ENST00000263967",
                    species="hsapiens")

Truncated CN segments

Description

A data set in long format containing Copy Number segments for 4 samples corresponding to "lung cancer" from Govindan et al. Cell. 2012, PMID:22980976

Usage

data(LucCNseg)

Format

a data frame with 3336 observations and 6 variables

Value

Object of class data frame


Class MutationAnnotationFormat_v1.0

Description

An S4 class to represent data in mutation annotation format version 1.0, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v1.0(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 1.0 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_v2.0

Description

An S4 class to represent data in mutation annotation format version 2.0, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v2.0(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 2.0 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_v2.1

Description

An S4 class to represent data in mutation annotation format version 2.1, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v2.1(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 2.1 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_v2.2

Description

An S4 class to represent data in mutation annotation format version 2.2, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v2.2(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 2.2 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_v2.3

Description

An S4 class to represent data in mutation annotation format version 2.3, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v2.3(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 2.3 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_v2.4

Description

An S4 class to represent data in mutation annotation format version 2.4, inherits from the MutationAnnotationFormat_Virtual class.

Usage

MutationAnnotationFormat_v2.4(mafData)

Arguments

mafData

data.table object containing a maf file conforming to the version 2.4 specification.

Slots

position

data.table object containing column names "Chromosome", "Start_Position", "End_Position, "Strand".

mutation

data.table object containing column names "Variant_Classification", "Variant_Type", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2".

sample

data.table object containing columns names "Tumor_Sample_Barcode".

meta

data.table object containing meta data.


Class MutationAnnotationFormat_Virtual

Description

An S4 class to act as a virtual class for MutationAnnotationFormat version sub-classes.

Slots

position

data.table object holding genomic positions.

mutation

data.table object holding mutation status data.

sample

data.table object holding sample data.

meta

data.table object holding all other meta data.


Class MutationAnnotationFormat

Description

An S4 class acting as a container for MutationAnnotationFormat version sub-classes, under development!!!

Usage

MutationAnnotationFormat(path, version = "auto", verbose = FALSE)

Arguments

path

String specifying the path to a MAF file.

version

String specifying the version of the MAF file, if set to auto the version will be obtained from the header in the MAF file.

verbose

Boolean specifying if progress should be reported while reading in the MAF file.

Slots

path

Character string specifying the path of the MAF file read in.

version

Numeric value specifying the version of the MAF file.

mafObject

MutationAnnotationFormat object which inherits from MutationAnnotationFormat_Virtual class.

See Also

Waterfall

MutSpectra


Class MutSpectra

Description

An S4 class for the MutSpectra plot object, under development!!!

Usage

MutSpectra(
  object,
  BSgenome = NULL,
  sorting = NULL,
  palette = NULL,
  clinical = NULL,
  sectionHeights = NULL,
  sampleNames = TRUE,
  verbose = FALSE,
  plotALayers = NULL,
  plotBLayers = NULL,
  plotCLayers = NULL
)

Arguments

object

Object of class MutationAnnotationFormat, GMS, VEP.

BSgenome

Object of class BSgenome, used to extract reference bases if not supplied by the file format.

sorting

Character vector specifying how samples should be ordered in the plot, one of "mutation", "sample", or a vector of length equal to the number of samples explicitly providing the order of samples.

palette

Character vector specifying the colors used for encoding transitions and transversions , should be of length 6. If NULL a default palette will be used.

clinical

Object of class Clinical, used for adding a clinical data subplot.

sectionHeights

Numeric vector specifying relative heights of each plot section, should sum to one. Expects a value for each section.

sampleNames

Boolean specifying if samples should be labeled on the plot.

verbose

Boolean specifying if status messages should be reported

plotALayers

list of ggplot2 layers to be passed to the frequency plot.

plotBLayers

list of ggplot2 layers to be passed to the proportion plot.

plotCLayers

list of ggplot2 layers to be passed to the clinical plot.

Slots

PlotA

gtable object for the mutation frequencies.

PlotB

gtable object for the mutation proportions.

PlotC

gtable object for clinical data sub-plot.

Grob

gtable object for the arranged plot.

primaryData

data.table object storing the primary data, should have column names sample, mutation, frequency, proportion.

ClinicalData

data.table object storing the data used to plot the clinical sub-plot.


Subset MAF file for PIK3CA gene

Description

A data set originating from the open access TCGA data (6c93f518-1956-4435-9806-37185266d248), the data set is composed of mutations for the PIK3CA gene for breast cancer. This is primarily intended to test the Lolliplot() function.

Usage

data(PIK3CA)

Format

a data frame with 361 observations and 19 variables

Value

Object of class data frame


Class Rainfall

Description

An S4 class for the Rainfall plot object, under development!!!

Usage

Rainfall(
  object,
  BSgenome = NULL,
  palette = NULL,
  sectionHeights = NULL,
  chromosomes = NULL,
  sample = NULL,
  pointSize = NULL,
  verbose = FALSE,
  plotALayers = NULL,
  plotBLayers = NULL
)

Arguments

object

Object of class MutationAnnotationFormat, GMS, VEP.

BSgenome

Object of class BSgenome to extract genome wide chromosome coordinates

palette

Character vector specifying colors used for encoding transitions and transversions , should be of length 7. If NULL a default palette will be used.

sectionHeights

Numeric vector specifying relative heights of each plot section, should sum to one. Expects a value for each section.

chromosomes

Character vector specifying chromosomes for which to plot

sample

Character vector specifying the samples for which to plot.

pointSize

numeric value giving the size of points to plot (defaults to 2)

verbose

Boolean specifying if status messages should be reported.

plotALayers

list of ggplot2 layers to be passed to the rainfall plot.

plotBLayers

list of ggplot2 layers to be passed to the density plot.

Slots

PlotA

gtable object for the rainfall plot

PlotB

gtable object for density plots based on the rainfall plot

Grob

gtable object for the arranged plot

primaryData

data.table object storing the primary data used for plotting.


Identity snps

Description

A data set containing locations of 24 identity snps originating from: Pengelly et al. Genome Med. 2013, PMID 24070238

Usage

data(SNPloci)

Format

a data frame with 24 observations and 3 variables

Value

Object of class data frame


Construct transition-transversion plot

Description

Given a data frame construct a plot displaying the proportion or frequency of transition and transversion types observed in a cohort.

Usage

TvTi(
  x,
  fileType = NULL,
  y = NULL,
  clinData = NULL,
  type = "Proportion",
  lab_Xaxis = TRUE,
  lab_txtAngle = 45,
  palette = c("#D53E4F", "#FC8D59", "#FEE08B", "#E6F598", "#99D594", "#3288BD"),
  tvtiLayer = NULL,
  expecLayer = NULL,
  sort = "none",
  clinLegCol = NULL,
  clinVarCol = NULL,
  clinVarOrder = NULL,
  clinLayer = NULL,
  progress = TRUE,
  out = "plot",
  sample_order_input,
  layers = NULL,
  return_plot = FALSE
)

Arguments

x

Object of class data frame with rows representing transitions and transversions. The data frame must contain the following columns 'sample', reference' and 'variant' or alternatively "Tumor_Sample_Barcode", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2" depending on the argument supplied to the fileType parameter. (required)

fileType

Character string specifying the format the input given to parameter x is in, one of 'MAF', 'MGI'. The former option requires the data frame given to x to contain the following column names "Tumor_Sample_Barcode", "Reference_Allele", "Tumor_Seq_Allele1", "Tumor_Seq_Allele2" the later option requires the data frame givin to x to contain the following column names "reference", "variant" and "sample". (required)

y

Named vector or data frame representing the expected transition and transversion rates. Either option must name transition and transverions as follows: "A->C or T->G (TV)", "A->G or T->C (TI)", "A->T or T->A (TV)", "G->A or C->T (TI)", "G->C or C->G (TV)", "G->T or C->A (TV)". If specifying a data frame, the data frame must contain the following columns names "Prop", "trans_tranv" (optional see vignette).

clinData

Object of class data frame with rows representing clinical data. The data frame should be in "long format" and columns must be names as "sample", "variable", and "value" (optional see details and vignette).

type

Character string specifying if the plot should display the Proportion or Frequency of transitions/transversions observed. One of "Proportion" or "Frequency", defaults to "Proportion".

lab_Xaxis

Boolean specifying whether to label the x-axis in the plot.

lab_txtAngle

Integer specifying the angle of labels on the x-axis of the plot.

palette

Character vector of length 6 specifying colours for each of the six possible transition transversion types.

tvtiLayer

Valid ggplot2 layer to be added to the main plot.

expecLayer

Valid ggplot2 layer to be added to the expected sub-plot.

sort

Character string specifying the sort order of the sample variables in the plot. Arguments to this parameter should be "sample", "tvti", or "none" to sort the x-axis by sample name, transition transversion frequency, or no sort respectively.

clinLegCol

Integer specifying the number of columns in the legend for the clinical data, only valid if argument is supplied to parameter clinData.

clinVarCol

Named character vector specifying the mapping of colours to variables in the variable column of the data frame supplied to clinData (ex. "variable"="colour").

clinVarOrder

Character vector specifying the order in which to plot variables in the variable column of the argument given to the parameter clinData. The argument supplied to this parameter should have the same unique length and values as in the variable column of the argument supplied to parameter clinData (see vignette).

clinLayer

Valid ggplot2 layer to be added to the clinical sub-plot.

progress

Boolean specifying if progress bar should be displayed for the function.

out

Character vector specifying the the object to output, one of "data", "grob", or "plot", defaults to "plot" (see returns).

sample_order_input

Sample orders to be used

layers

ggplot object to be added to proportions plot

return_plot

Return as ggplot object? Only returns main plot

Details

TvTi is a function designed to display proportion or frequency of transitions and transversion seen in a data frame supplied to parameter x.

Value

One of the following, a list of dataframes containing data to be plotted, a grob object, or a plot.

Examples

TvTi(brcaMAF, type='Frequency',
palette=c("#77C55D", "#A461B4", "#C1524B", "#93B5BB", "#4F433F", "#BFA753"),
lab_txtAngle=60, fileType="MAF")

Class VEP_v88

Description

An S4 class to represent data in variant effect predictor version 88 format, inherits from the VEP_Virtual class, under development!!!

Usage

VEP_v88(vepData, vepHeader)

Arguments

vepData

data.table object containing a VEP annotation file conforming to the version 88 specifications.

vepHeader

Object of class list containing character vectors for vep header information.

Slots

header

data.table object containing header information

description

data.table object containing column descriptions

position

data.table object containing column names "chromosome_name", "start", "stop".

mutation

data.table object containing column names "reference", "variant", "trv_type".

sample

data.table object containing columns names "sample".

meta

data.table object containing meta data.


Class VEP_Virtual

Description

An S4 class to act as a virtual class for VEP version sub-classes, under development!!!

Slots

header

data.table object holding header information.

description

data.table object holding column descriptions

position

data.table object holding genomic positions.

mutation

data.table object holding mutation status data.

sample

data.table object holding sample data.

meta

data.table object holding all other meta data.


Class VEP

Description

An S4 class for Variant Effect Predictor input, under development!!!

Usage

VEP(path, data = NULL, version = "auto", verbose = FALSE)

Arguments

path

String specifying the path to a VEP annotation file. Can accept wildcards if multiple VEP annotation files exist (see details).

data

data.table object storing a GMS annotation file. Overrides "path" if specified.

version

String specifying the version of the VEP files, Defaults to auto which will look for the version in the header.

verbose

Boolean specifying if progress should be reported while reading in the VEP files.

Details

When specifying a path to a VEP annotation file the option exist to either specify the full path to an annotation file or to use wildcards to specify multiple files. When specifying a full path the initalizer will check if a column named "sample" containg the relevant sample for each row exists. If such a column is not found the initalizer will assume this file corresponds to only one sample and populate a sample column accordingly. Alternatively if multiple files are specified at once using a wildcard, the initalizer will aggregate all the files and use the file names minus any extension to populate sample names.

Slots

path

Character string specifying the paths of the VEP files read in.

version

Numeric value specifying the version of VEP used.

vepObject

vep object which inherits from VEP_Virtual class.

See Also

Waterfall

MutSpectra


Construct a oncoprint

Description

This function has been removed, please use Waterfall() (capital W) Tutorial can be found at: https://currentprotocols.onlinelibrary.wiley.com/doi/full/10.1002/cpz1.252

Usage

waterfall()

Class Waterfall

Description

An S4 class for the waterfall plot object, under development!!!

Usage

Waterfall(
  input,
  labelColumn = NULL,
  samples = NULL,
  coverage = NULL,
  mutation = NULL,
  genes = NULL,
  mutationHierarchy = NULL,
  recurrence = NULL,
  geneOrder = NULL,
  geneMax = NULL,
  sampleOrder = NULL,
  plotA = c("frequency", "burden", NULL),
  plotATally = c("simple", "complex"),
  plotALayers = NULL,
  plotB = c("proportion", "frequency", NULL),
  plotBTally = c("simple", "complex"),
  plotBLayers = NULL,
  gridOverlay = FALSE,
  drop = TRUE,
  labelSize = 5,
  labelAngle = 0,
  sampleNames = TRUE,
  clinical = NULL,
  sectionHeights = NULL,
  sectionWidths = NULL,
  verbose = FALSE,
  plotCLayers = NULL
)

Arguments

input

Object of class MutationAnnotationFormat, VEP, GMS, or alternatively a data frame/data table with column names "sample", "gene", "mutation".

labelColumn

Character vector specifying a column name from which to extract label names for cells, must be a column within the object passed to input.

samples

Character vector specifying samples to plot. If not NULL all samples in "input" not specified with this parameter are removed. Further samples specified but not present in the data will be added.

coverage

Integer specifying the size in base pairs of the genome covered by sequence data from which mutations could be called. Required for the mutation burden sub-plot (see details and vignette). Optionally a named vector of integers corresponding to each sample can be supplied for more accurate calculations.

mutation

Character vector specifying mutations to keep, if defined mutations not supplied are removed from the main plot.

genes

Character vector specifying genes to keep, if not "NULL" all genes not specified are removed. Further genes specified but not present in the data will be added.

mutationHierarchy

data.table/data.frame object with rows specifying the order of mutations from most to least deleterious and containing column names "mutation" and "color". Used to change the default colors and/or to give priority to a mutation for the same gene/sample (see details and vignette).

recurrence

Numeric value between 0 and 1 specifying a mutation recurrence cutoff. Genes which do not have mutations in the proportion of samples defined are removed.

geneOrder

Character vector specifying the order in which to plot genes.

geneMax

Integer specifying the maximum number of genes to be plotted. Genes kept will be choosen based on the reccurence of mutations in samples, unless geneOrder is specified.

sampleOrder

Character vector specifying the order in which to plot samples.

plotA

String specifying the type of plot for the top sub-plot, one of "burden", "frequency", or NULL for a mutation burden (requires coverage to be specified), frequency of mutations, or no plot respectively.

plotATally

String specifying one of "simple" or "complex" for a simplified or complex tally of mutations respectively.

plotALayers

list of ggplot2 layers to be passed to the plot.

plotB

String specifying the type of plot for the left sub-plot, one of "proportion", "frequency", or NULL for a plot of gene proportions frequencies , or no plot respectively.

plotBTally

String specifying one of "simple" or "complex" for a simplified or complex tally of genes respectively.

plotBLayers

list of ggplot2 layers to be passed to the plot.

gridOverlay

Boolean specifying if a grid should be overlayed on the waterfall plot. This is not recommended for large cohorts.

drop

Boolean specifying if mutations not in the main plot should be dropped from the legend. If FALSE the legend will be based on mutations in the data before any subsets occur.

labelSize

Integer specifying the size of label text within each cell if "labelColumn" has been specified.

labelAngle

Numeric value specifying the angle of label text if "labelColumn" has been specified.

sampleNames

Boolean specifying if samples should be labeled on the x-axis of the plot.

clinical

Object of class Clinical, used for adding a clinical data subplot.

sectionHeights

Numeric vector specifying relative heights of each plot section, should sum to one. Expects a value for each section.

sectionWidths

Numeric vector specifying relative heights of each plot section, should sum to one. Expects a value for each section.

verbose

Boolean specifying if status messages should be reported.

plotCLayers

list of ggplot2 layers to be passed to the main plot.

Details

'Waterfall()' is designed to visualize the mutations seen in a cohort. As input the function takes an object of class MutationAnnotationFormat, VEP, or GMS. Alternatively a user can provide either of data.table or data.frame as long as the column names of those objects include "sample", "gene", and "mutation". When supplying an object of class data.table or data.frame the user must also provide input to the 'mutationHierarchy' parameter.

The 'mutationHierarchy' parameter expects either a data.table or data.frame object containing the column names "mutation" and "color". Each row should match a mutation type given in the param 'input'. The 'mutationHierarchy' parameter is intended to both change the colors of mutations on the plot and to set a hierarchy of which mutation type to plot if there are more than 1 mutation types for the same gene/sample combination.

Slots

PlotA

gtable object for the top sub-plot.

PlotB

gtable object for the left sub-plot.

PlotC

gtable object for the main plot.

PlotD

gtable object for the bottom sub-plot.

Grob

gtable object for the arranged plot.

primaryData

data.table object storing the primary data, should have column names sample, gene, mutation, label.

simpleMutationCounts

data.table object storing simplified mutation counts, should have column names sample, mutation, Freq, mutationBurden

complexMutationCounts

data.table object storing mutation counts per mutation type should have column names sample, mutation, Freq, mutationBurden.

geneData

data.table object storing gene counts, should have column names gene, mutation, count.

ClinicalData

data.table object stroring the data used to plot the clinical sub-plot.

mutationHierarchy

data.table object storing the hierarchy of mutation type in order of most to least important and the mapping of mutation type to color. Should have column names mutation, color, and label.

See Also

MutationAnnotationFormat, VEP, GMS, Clinical

Examples

set.seed(426)

# create a data frame with required column names
mutationDF <- data.frame("sample"=sample(c("sample_1", "sample_2", "sample_3"), 10, replace=TRUE),
                         "gene"=sample(c("egfr", "tp53", "rb1", "apc"), 10, replace=TRUE),
                         "mutation"=sample(c("missense", "frame_shift", "splice_site"), 10, replace=TRUE))

# set the mutation hierarchy (required for DF)
hierarchyDF <- data.frame("mutation"=c("missense", "frame_shift", "slice_site"),
                          "color"=c("#3B3B98", "#BDC581", "#6A006A"))
                          
# Run the Waterfall Plot and draw the output
Waterfall.out <- Waterfall(mutationDF, mutationHierarchy=hierarchyDF)
drawPlot(Waterfall.out)

Method writeData

Description

Method writeData

Usage

writeData(object, ...)

## S4 method for signature 'GMS_Virtual'
writeData(object, file, sep, ...)

## S4 method for signature 'GMS'
writeData(object, file, ...)

## S4 method for signature 'MutationAnnotationFormat_Virtual'
writeData(object, file, sep, ...)

## S4 method for signature 'MutationAnnotationFormat'
writeData(object, file, ...)

## S4 method for signature 'VEP_Virtual'
writeData(object, file, sep, ...)

## S4 method for signature 'VEP'
writeData(object, file, ...)

Arguments

object

Object of class VEP

...

additional arguments to passed

file

Character string specifying a file to send output to.

sep

Delimiter used when writing output, defaults to tab.

Details

The writeData method is used to output data held in GenVisR objects to a file.