Package 'terraTCGAdata'

Obtain assay datasets from Terra

Description

Obtain assay datasets from Terra

Usage

getAssayData(
  assayName,
  sampleCode = "01",
  tablename = .DEFAULT_TABLENAME,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  metacols = .PARTICIPANT_METADATA_COLS,
  sampleIdx = TRUE
)

Arguments

assayName	character() The name of the assay dataset column from getAssayTable to import into the current workspace.
sampleCode	character(1) The sample code used to filtering samples e.g., "01" for Primary Solid Tumors, see data("sampleTypes", package = "TCGAutils") for reference
tablename	The Terra data model table from which to extract the clinical data (default: "sample")
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
metacols	The set of columns that comprise of the metadata columns. See the .PARTICIPANT_METADATA_COLS global variable
sampleIdx	numeric() index or TRUE. Specify an index for subsetting the assay data. This argument is mainly used for example and vignette purposes. To use all the data, use the default value (default: TRUE)

Value

Either a matrix or RaggedExperiment depending on the assay selected

See Also

getAssayTable()

Examples

if (AnVIL::gcloud_exists())
  getAssayData(
      assayName = "protein_exp__mda_rppa_core__mdanderson_org__Level_3__protein_normalization__data",
      sampleCode = c("01", "10"),
      workspace = "TCGA_ACC_OpenAccess_V1-0_DATA"
  )

---

Obtain a reference table for assay data in the Terra data model

Description

The column names in the output can be used in the getAssayData function.

Usage

getAssayTable(
  tablename = .DEFAULT_TABLENAME,
  metacols = .PARTICIPANT_METADATA_COLS,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE
)

Arguments

tablename	The Terra data model table from which to extract the clinical data (default: "sample")
metacols	The set of columns that comprise of the metadata columns. See the .PARTICIPANT_METADATA_COLS global variable
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.

Value

A tibble of pointers to resources within the Terra data model

Examples

if (AnVIL::gcloud_exists())
  getAssayTable(workspace = "TCGA_COAD_OpenAccess_V1-0_DATA")

---

Obtain clinical data

Description

The participant table may contain curated demographic information e.g., sex, age, etc.

Usage

getClinical(
  columnName,
  participants = TRUE,
  tablename = .DEFAULT_TABLENAME,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  verbose = TRUE,
  metacols = .PARTICIPANT_METADATA_COLS,
  participantIds = NULL
)

Arguments

columnName	The name of the column to extract files, see getClinicalTable table. If not provided, the first column in the table will be used to obtain the clinical information.
participants	logical(1) Whether to merge the participant table from avtable("participant") to the clinical data
tablename	The Terra data model table from which to extract the clinical data (default: "sample")
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
verbose	logical(1) Whether to output additional information regarding the workspace and namespace (default: TRUE).
metacols	The set of columns that comprise of the metadata columns. See the .PARTICIPANT_METADATA_COLS global variable
participantIds	character() TCGA participant identifiers usually in the form of "TCGA-AB-1234". By default, all available participant identifiers will be used. (default: NULL)

Value

A DataFrame with clinical information from TCGA. The metadata i.e., metadata(object) includes the columnName used to obtain the data.

Examples

if (AnVIL::gcloud_exists())
  getClinical(
      workspace = "TCGA_ACC_OpenAccess_V1-0_DATA",
      participantIds = c("TCGA-OR-A5J1", "TCGA-OR-A5J2",
          "TCGA-OR-A5J3", "TCGA-OR-A5J4")
  )

---

Obtain the reference table for clinical data

Description

The column names in the output table can be used in the getClinical function.

Usage

getClinicalTable(
  tablename = .DEFAULT_TABLENAME,
  metacols = .PARTICIPANT_METADATA_COLS,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  verbose = TRUE
)

Arguments

tablename	The Terra data model table from which to extract the clinical data (default: "sample")
metacols	The set of columns that comprise of the metadata columns. See the .PARTICIPANT_METADATA_COLS global variable
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
verbose	logical(1) Whether to output additional information regarding the workspace and namespace (default: TRUE).

Value

A tibble of Google Storage resource locations e.g., ⁠gs://firecloud...⁠

Examples

if (AnVIL::gcloud_exists())
    getClinicalTable(
        workspace = "TCGA_ACC_OpenAccess_V1-0_DATA"
    )

---

Import Terra TCGA data as a list

Description

Import Terra TCGA data as a list

Usage

getTCGAdatalist(
  assayNames,
  sampleCode,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  tablename = .DEFAULT_TABLENAME,
  sampleIdx = TRUE,
  verbose = TRUE
)

Arguments

assayNames	character() A vector of assays selected from the colnames of getAssayTable.
sampleCode	character(1) The sample code used to filtering samples e.g., "01" for Primary Solid Tumors, see data("sampleTypes", package = "TCGAutils") for reference
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
tablename	The Terra data model table from which to extract the clinical data (default: "sample")
sampleIdx	numeric() index or TRUE. Specify an index for subsetting the assay data. This argument is mainly used for example and vignette purposes. To use all the data, use the default value (default: TRUE)
verbose	logical(1L) Whether to output additional details of the data facilitation.

Value

A list of assay datasets

Examples

if (AnVIL::gcloud_exists())
  getTCGAdatalist(
      assayNames = c("protein_exp__mda_rppa_core__mdanderson_org__Level_3__protein_normalization__data",
      "snp__genome_wide_snp_6__broad_mit_edu__Level_3__segmented_scna_minus_germline_cnv_hg18__seg"),
      sampleCode = c("01", "10"),
      workspace = "TCGA_COAD_OpenAccess_V1-0_DATA"
  )

---

Get an overview of the samples available in the workspace

Description

The function provides an overview of samples from the avtables("sample") table for the current workspace. Along with the sample codes and frequencies, the output provides a description for each code and the short letter codes.

Usage

sampleTypesTable(
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  tablename = .DEFAULT_TABLENAME,
  verbose = TRUE
)

Arguments

workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
tablename	The Terra data model table from which to extract the clinical data (default: "sample")
verbose	logical(1) Whether to output additional information regarding the workspace and namespace (default: TRUE).

Value

A tibble of sample codes and frequency along with their definition and short letter code

Examples

if (AnVIL::gcloud_exists())
  sampleTypesTable(workspace = "TCGA_COAD_OpenAccess_V1-0_DATA")

---

Obtain a MultiAssayExperiment from the Terra workspace

Description

Workspaces on Terra come pre-loaded with TCGA Data. The examples in the documentation correspond to the TCGA_COAD_OpenAccess_V1 workspace that can be found on app.terra.bio.

Usage

terraTCGAdata(
  clinicalName,
  assays,
  participants = TRUE,
  sampleCode = NULL,
  split = FALSE,
  workspace = terraTCGAworkspace(),
  namespace = .DEFAULT_NAMESPACE,
  tablename = .DEFAULT_TABLENAME,
  verbose = TRUE,
  sampleIdx = TRUE
)

Arguments

clinicalName	character(1) The column name taken from getClinicalTable() and downloaded to be included as the colData.
assays	character() A character vector of assay names taken from getAssayTable()
participants	logical(1) Whether to merge the participant table from avtable("participant") to the clinical data
sampleCode	character() A character vector of sample codes from sampleTypesTable(). By default, (NULL) all samples are downloaded and kept in the data.
split	logical(1L) Whether or not to split the MultiAssayExperiment by sample types using splitAssays helper function (default FALSE).
workspace	character(1) The Terra Data Resources workspace from which to pull TCGA data (default: see terraTCGAworkspace()). This is set to a package-wide option.
namespace	character(1) The Terra Workspace Namespace that defaults to "broad-firecloud-tcga" and rarely needs to be changed.
tablename	The Terra data model table from which to extract the clinical data (default: "sample")
verbose	logical(1) Whether to output additional information regarding the workspace and namespace (default: TRUE).
sampleIdx	numeric() index or TRUE. Specify an index for subsetting the assay data. This argument is mainly used for example and vignette purposes. To use all the data, use the default value (default: TRUE)

Value

A MultiAssayExperiment object with n number of assays corresponding to the assays argument.

Examples

if (AnVIL::gcloud_exists())
  terraTCGAdata(
      clinicalName = "clin__bio__nationwidechildrens_org__Level_1__biospecimen__clin",
      assays = c("protein_exp__mda_rppa_core__mdanderson_org__Level_3__protein_normalization__data",
      "rnaseqv2__illuminahiseq_rnaseqv2__unc_edu__Level_3__RSEM_genes_normalized__data"),
      workspace = "TCGA_COAD_OpenAccess_V1-0_DATA",
      sampleCode = NULL,
      sampleIdx = 1:4,
      split = FALSE
  )

---

Obtain or set the Terra Workspace Project Dataset

Description

Terra allows access to about 71 open access TCGA datasets. A dataset workspace can be set using the terraTCGAworkspace function with a projectName input. Use the selectTCGAworkspace function to select a TCGA data workspace from an interactive table.

Usage

terraTCGAworkspace(projectName = getOption("terraTCGAdata.workspace", NULL))

selectTCGAworkspace(
  projectName = getOption("terraTCGAdata.workspace", NULL),
  verbose = FALSE,
  ...
)

Arguments

projectName	character(1) A project code usually in the form of ⁠TCGA_CODE_OpenAccess_V1-0_DATA⁠. See selectTCGAworkspace to interactively select from a table of project codes.
verbose	logical(1) Whether to provide more informative messages when an the "terraTCGAdata.workspace" option is set.
...	further arguments passed down to lower level functions, not intended for the end user.

Details

Note that GDC workspaces are not supported and are excluded from the search results. GDC workspaces use a Terra workflow to download TCGA data rather than providing Google Bucket storage locations for easy data retrieval. To reset the terraTCGAworkspace, use terraTCGAworkspace(NULL) and you will be prompted to select from a list of TCGA workspaces. You may also check the current active workspace by running terraTCGAworkspace() without any inputs.

Value

A Terra TCGA Workspace name

Functions

• selectTCGAworkspace(): Function to interactively select from the available TCGA data workspaces in Terra. The 'projectName' argument and 'terraTCGAdata.workspace' option must be 'NULL' to enable the interactive gadget.

Examples

if (AnVIL::gcloud_exists() && interactive()) {
  selectTCGAworkspace()
  terraTCGAworkspace()
}

---