NEWS

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ComplexHeatmap 2.15.3

• 'Legend()': 'legend_gp' also controls line color, width and style.
• 'anno_mark()': labels can be duplicated.

ComplexHeatmap 2.15.1

• 'Legend()': allows 'NA' in 'pch'.
• 'SingleAnnotation()': correctly calculate the max width/height of a vector of texts.
• 'to_unit()': fixed a bug when the unit is negative.
• 'Legend()': add 'tick_length' argument.
• 'Legend()': colors are correctly calculated when differences between 'at' are not equal.

ComplexHeatmap 2.13.4

• 'anno_barplot()': fixed a bug when split is set, the bars are wrongly plotted under besides = TRUE.
• 'anno_boxplot()': add two new argumetn: 'add_points' and 'pt_gp'.
• fixed a bug of size of column title wrongly calculated.

ComplexHeatmap 2.13.2

• 'HeatmapAnnotation()': fixed a bug where annotation legends are not all generated when 'df' is set.
• 'UpSet()': now 'bg_col' can be a vector of length more than two.
• 'oncoPrint()': Add 'pct_include' argument.
• 'anno_density()': fixed a bug where 'xlim' is ignored for "heatmap".

ComplexHeatmap 2.13.1

• 'column_title_rot' can be set with any degree value.
• automatically recognize Jupyter environment.
• 'UpSet()': 'comb_col' now is correctly assigned when the combination matrix is transposed.

ComplexHeatmap 2.11.2

• discrete color mapping: when heatmap_param_list$at is set, it is reduced accordingly to 'col'.

ComplexHeatmap 2.11.1

• add a global option 'ht_opt$COLOR' to control colors for continuous color mapping.
• 'annotation_label' can be an 'expression' object.
• 'recycle_gp()': now consider when n = 0.
• 'anno_block()': add 'align_to' argument.
• add 'anno_text_box()' and 'grid.text_box()'.
• add 'show_name' argument in 'anno_empty()'.
• the validation of annotations in 'HeatmapAnnotation()' is simplified.
• add 'anno_numeric()'.
• when 'rect_gp = gpar(type = "none")', 'use_raster' is enforced to be FALSE.
• "global variables" outside 'cell_fun'/'layer_fun' are aotumatially identified and saved locally.

ComplexHeatmap 2.9.4

• fixed a bug of missing right annotation legends for vertically concatenated heatmaps.
• 'Legend()': support 'border' to be set to 'asis'.
• Rasterization: the default maximal size for temporary image is set to 30000 px (both for width and height).
• add a new argument 'beside' in 'anno_barplot()' to position bars beside each other.
• add 'plot()' method for 'Heatmap' and 'HeatmapList' classes.
• add 'anno_customize()'.

ComplexHeatmap 2.9.3

• 'pheatmap()'/'heatmap()'/'heatmap.2()': set default of run_draw to FALSE.
• throw error when the heatmaps (list) are already initialized by draw() when adding them.
• set 'wrap = TRUE' in 'grid.grabExpr()' when capturing the legend objects.
• 'make_comb_mat()': support 'GRangesList' object as input.
• legends: fixed a bug of the grid heights were not correctedly calculated.
• discrete annotations: neighbour grids are merged into one single grid if they have the same values.
• 'anno_barplot()': allows to add numbers on top of bars.
• 'UpSet()': axis labels are automatically formated for genomic coordinates.
• 'AnnotationFunction()': add a new argument 'cell_fun'.
• When the dendrogram height is zero, the corresponding viewport has scale (0, 1).

ComplexHeatmap 2.9.2

• fixed a bug of 'bg_col' for transposed matrix in 'UpSet()'.
• print warnings if names of annotations have different orders from the matrix row/column names.

ComplexHeatmap 2.9.1

• fixed a bug of editing gTree object where the list element "just" has been changed to "justification" in recent R versions.

ComplexHeatmap 2.7.10

• 'anno_simple()': text symbols can have nchar > 1.
• 'anno_text()': add 'show_name' argument.

ComplexHeatmap 2.7.9

• add 'frequencyHeatmap()'.
• add 'Heatmap3D()'.

ComplexHeatmap 2.7.8

• add 'cluster_between_groups()'.
• add 'graphics' argument in 'anno_block()'.

ComplexHeatmap 2.7.7

• discrete numeric legend labels are in correct order now.
• parallel is implemented with foreach + doParallel
• expression is properly processed for discrete legends
• 'adjust_dend_by_x()': simplified the representation of units.
• number of split can be the same as number of matrix rows/columns.

ComplexHeatmap 2.7.6

• 'Legend()': add a new argument 'grob'.

ComplexHeatmap 2.7.5

• 'anno_block()': add 'labels_offset' and 'labels_just'.
• 'anno_lines()': 'show_points' can be a vector.
• 'pheatmap()': support 'kmeans_k'.

ComplexHeatmap 2.7.4

• add 'save_last' option in 'ht_opt()'.

ComplexHeatmap 2.7.1

• 'normalize_comb_mat()': add 'full_comb_sets' and 'complement_set' arguments to control full sets of combination sets.
• adjust the space of column title according to ggplot2.
• 'Legend()': for title_position == "lefttop", the title position is adjusted.
• Legends are automatically adjusted according to the device size when resizing the device.
• 'Legend()': add 'interval_dist' to control the distance of two neighbouring breaks.
• Fixed a bug that it crashes Rstudio
• 'make_comb_mat()': print warning messages when there are NA values in the matrix.
• temporary solution for woking under retina display with Rstudio
• add 'bin_genome()' and 'normalize_genomic_signals_to_bins()'
• print messages if directly sending 'anno_*()' functions to 'top_annotation' or similar arguments.
• 'pheatmap()': set heatmap name to " " so that there is no legend title by default.
• also translate 'stats::heatmap()' and 'gplots::heatmap.2()'.
• move all code for interactive heatmap to InteractiveComplexHeatmap package.

ComplexHeatmap 2.5.6

• 'ht_shiny()': add argument 'app'.
• 'grid.dendrogram()': change the recursive implementation with iterations.
• change default raster device to 'CairoPNG'.
• 'Heatmap()': If the discrete 'col' covers more than the levels in the matrix, the full color set is still saved, which means, in 'heatmap_legend_param' you can set 'at' that are not all in the matrix but are in the 'col'.
• padding of the whole plot and spaces of column titles are adjusted to fit ggplot2
• add 'row_gap' and 'column_gap' in 'Legend()'.
• 'oncoPrint()': now draw legends the same as 'alter_fun'.
• add a new function 'attach_annotation()'.
• legends for row annotations can be grouped with column annotation legends.
• annotation name allows rotations.

ComplexHeatmap 2.5.5

• still draw the legend when all values are NA in an annotation.
• add 'show_fraction' argument in 'anno_oncoprint_barplot()' function to show the fractions of mutations instead of the counts.
• 'pheatmap()': improve the setting of 'color' and 'breaks'.
• 'ht_opt$TITLE_PADDING' can be set with a unit of length two.
• 'HeatmapAnnotation()': remove colors that are not in the annotations.
• 'pheatmap()': fixed a bug when length(breaks) = length(color) + 1
• 'pheatmap()': legend breaks are centered to zero if the matrix is scaled.
• 'pheatmap()': color mapping is symmetric to zero when scale is set.
• support ragg package to write temporary png files
• 'densityHeatmap()': column dendrogram is reordered by column means for ks method.

ComplexHeatmap 2.5.4

• fixed a bug where slice clusters were wrongly reordered.
• 'Heatmap()': add 'border_gp' argument.
• Legends are nicely placed.
• 'anno_block()': allows to set height and width.
• support better rasterization.
• support setting graphics on dendrogram nodes.
• Add a new vignette "interactive heatmap"
• 'Legends()': fixed a bug of mixtype "legend" to "Legend".
• now assign correct envir to 'decorate_dend()'.
• 'pheatmap()': check 'NA' in the matrix.
• 'grid.dendrogram()': consider branches with height zero.
• checking the dimension of the matrix and the nobs of annotations when adding them.

ComplexHeatmap 2.5.3

• add 'selectArea()'/'selectPosition()' which allows interactively select a region from the heatmaps.
• export the heatmap as a shiny app!!!
• 'col' in 'Heatmap()' accpets a 'ColorMapping' object.
• 'default_col()': print a message if there are outliers in the matrix.
• 'discrete_legend_body()': adjust ncol and nrow if there are empty rows and columns in the layout.
• 'anno_image()': fixed a bug that images are not reordered.
• 'anno_mark()': now expression is correctly supported.
• 'anno_zoom()': order of index in 'panel_fun' is adjusted to the order in the heatmap
• 'list_to_matrix()': convert elements to characters.
• print messages for 'anno_mark()', 'anno_zoom()', 'draw_legend()' (if legends are wrapped) if working under RStudio.

ComplexHeatmap 2.5.2

• translate pheatmap to Heatmap
• 'upset_top_annotation()' and 'upset_right_annotation()': the names of the annotations are changed to 'intersection_size', 'set_size' and 'union_size'.
• 'list_components()': adds 'pattern' argument.

ComplexHeatmap 2.5.1

• A temporary solution of the sum of two complicated units (in temp.R).

ComplexHeatmap 2.3.4

• add 'alter_graphic()' to automatically generate alteration graphic functions.
• add 'label'/'annotation_label' argument in 'SingleAnnotation()' and 'HeatmapAnnotation()'.
• improved the subsetting methods for 'comb_mat' class
• rewrite 'smartAlign2()'

ComplexHeatmap 2.3.3

• support **gridtext** package
• fixed the bug of node stack overflow when there are many identical rows for drawing the dendrogram. see (http://www.thinkingincrowd.me/2016/06/06/How-to-avoid-Stack-overflow-error-on-recursive/)
• support to set legend gaps
• print important messages, e.g. when number of rows are more than 2000, interanlly use_raster is turned on and the message should be printed to users.
• UpSet plots: optimize the processing of many sets (current solution consumes huge memory)
• UpSet plots: the "intersect" and "union" modes are currectly calculated.
• 'anno_block()': add 'show_name' argument.

ComplexHeatmap 2.3.2

• 'anno_simple()': fixed a bug when pch are all NA in a slice
• adjust code according to grid 4.0.
• move scripts in test_not_run/ to tests/ folder
• 'Heatmap()': 'cluster_row_slice'/'cluster_column_slice' set to TRUE by default for character matrix and when dendrogram is already provided.
• 'smartAlign2()': improved the code that positions are correctly calculated.
• row titles are in the correct order if they are set as "template".

ComplexHeatmap 2.3.1

• 'anno_points()': allows images as symbols.
• add 'HEATMAP_LEGEND_PADDING' and 'ANNOTATION_LEGEND_PADDING' options in 'ht_opt'
• 'oncoPrint()': print messages if there are NA values in the input matrix

ComplexHeatmap 2.1.1

• 'Heatmap()': give error when heatmap has empty string as its name.
• 'anno_mark()': text positions are correctly calculated now with rotations.
• The order of legend labels are ordered by either 'sort' or 'levels'.

ComplexHeatmap 2.1.0

• check the length of the clustering objects and the matrix rows/columns
• 'anno_oncoprint_barplot()': add 'ylim' argumnet
• 'anno_mark()': add 'labels_rot' argument
• 'draw_legend()': legends for annotations with the same names are merged
• 'densityHeatmap()': 'ylim' works as it is expected.
• add 'cluster_row_slices' and 'cluster_column_slices' to 'draw,HeatmapList-method()'
• 'densityHeatmap()': 'col' can be set as a function
• add 'cluster_rows'/'cluster_columns' in 'oncoPrint()'
• legend labels support symbols
• 'Heatmap()': add 'jitter' argument to add tiny random shift to original matrix. It is mainly to solve the problem of "Error: node stack overflow" when there are too many identical rows/columns for plotting the dendrograms.

ComplexHeatmap 1.99.8

• add 'title_gap' in 'Legend()
• fixed a bug of wrong row title spaces when multiple heatmaps are vertically concatenated.
• fixed a bug of *_sub_title_side when the heatmap annotation is the first/last element in the heatmap list.
• zero-column/row heatmap is supported.
• improved calculation of axis breaks

ComplexHeatmap 1.99.7

• 'UpSet()' supports adding complement sets.
• 'make_comb_set()': add 'universal_set' and 'complement_size' arguments.
• axes can be reversed in anno_* functions.

ComplexHeatmap 1.99.6

• adjust the size of heatmap annotations and add testing scripts.
• run multiple times k-means to get a consensus partition.
• 'show_heatmap_legend' is set to FALSE if 'rect_gp = gpar(type = "none")'.
• add 'restore_matrix()'.
• add 'row_names_centered'/'column_names_centered' arguments to 'Heatmap()'.
• 'gp' in 'anno_text()' supports 'fill' and 'border'.
• 'Legend' adds boxplot-style legend.
• adjustment according to annotation extension is improved.

ComplexHeatmap 1.99.5

• add 'UpSet()' and some related functions to make Upset plots
• fixed bugs of drawing legends
• add 'test_alter_fun()'
• 'HeatmapAnnotation()': fixed a bug for setting 'height' when all annotations are simple annotations.
• 'default_col()': if the fraction of positive values in the matrix is in (0.3, 0.7), the color mapping is symmetric to zero.
• check 'NA' values in 'anno_boxplot()' and 'anno_density()'.
• add 'mc.cores' in 'densityHeatmap()'.

ComplexHeatmap 1.99.4

• anno_mark() is now calculated in multiple slices.
• oncoPrint(): automatically split the alteration type if the separator is one of ";:,|".
• add anno_zoom()

ComplexHeatmap 1.99.1

• add 'cluster_row_slices' and 'cluster_column_slices' arguments in 'Heatmap()'.
• fixed a bug when annotation_height with only one annotation
• order of k-means slices are reordered by slice mean of 'row_reorder'/'column_reorder' if they are provided as vectors.
• remove **rsvg** from Suggests.

ComplexHeatmap 1.99.0

This a major update of the package. The main changes are

• support column split
• support align heatmaps vertically
• add a naive 'AnnotationFunction' class to handle annotation functions
• add more annotation functions

ComplexHeatmap 1.19.1

• 'Heatmap()': no column name added if the input matrix is a one-column matrix.
• 'oncoPrint()': scales the the row annotations are now the same if rows are split.

ComplexHeatmap 1.17.1

• 'Legend()': add 'by_row' argument to control the arrangement of legends if they are put in more than one columns
• 'Legend()': use 'textGrob()' if the point symbol is text
• 'grid.dendrogram()': fix a bug that the dendrogram is wrong when row/column names have duplicated names.
• 'anno_boxplot()': axis rescaled when outline = FALSE
• 'oncoPrint()': rows are first ordered by total number of mutations and then ordered by number of samples that have mutations
• correctly reorder rows
• add 'row_gap' argument for list of heatmaps
• 'oncoPrint()': add 'j' and 'i' as optional argument for 'alter_fun'

ComplexHeatmap 1.15.1

• random colors are generated by new 'rand_color()' function in circlize package.
• add 'density_param' in 'densityHeatmap()' function
• annotations with duplicated names have no legends any more
• re-implement 'grid.xaxis()' to draw axis labels rotated 90 degrees
• grids in discrete legend are arranged by rows if ncol > 1
• raster image is generated in an independent R session
• empty string in annotation or heatmap is mapped to NA
• annotation and heatmap legends can be merged into one column.
• change the default value of 'row_names_max_width' and 'column_names_max_height'
• default legend style for continuous values is changed to "continuous"
• add 'grid.dendrogram2()' which draws dendrograms with uneven position for leaves
• move **dendextend** to Suggests field because it depends/imports rlang indirectly which has a 'print.frame()' function and it will affect to print a 'frame' object returned by 'frameGrob()'.
• 'decorate_*()' functions return to the viewport where they are called.
• fixed a bug that annotation names are drawn for all row slices.
• construct a valid path under Windows

ComplexHeatmap 1.13.2

• add 'packLegend()'

ComplexHeatmap 1.13.1

• 'Heatmap()': add 'km_title' to set the format of row title when 'km' is set
• 'anno_link()': add 'extend' to extend the regions for the labels
• 'anno_boxplot()': for row annotation, outliers are in the correct in y-axis. Thanks @gtg602c for the fix
• 'HeatmapAnnotation()': gaps are included in the size of the annotations
• 'anno_link()': graphic parameters are correctly reordered
• 'densityHeatmap()': viewport is created with 'clip = TRUE'
• 'decorate_*()': add 'envir' option to control where to look for variables inside 'code'
• 'Legend()': title supports expression
• 'anno_*()': if the input is a data frame, warn that users may convert it to matrix

ComplexHeatmap 1.11.8

• 'anno_barplot()': accept a matrix as input to plot stacked barplots

ComplexHeatmap 1.11.7

• SingleAnnotation: if 'col' is a vector with no names, it will be assigned as 'level(value)' or 'unique(value)'
• HeatmapAnnotation: give warnings if color is defined while with no annotations
• HeatmapAnnotation: check 'col', if it is not valid, give warnings
• catch error when making annotation graphics

ComplexHeatmap 1.11.6

• simply bump the verison number
• 'gap' in 'Heatmap()' now can be a vector

ComplexHeatmap 1.11.5

• 'gap' in 'HeatmapAnnotation' has been adjusted
• annotations support drawing names of either sides
• 'densityHeatmap()': quantile lines are also reordered
• export 'anno_oncoprint_barplot'
• 'Heatmap()': if 'col' is a unnamed vector and the number of colors is same as unique itemes in 'mat', the name of 'col' vector is set to 'sort(unique(mat))
• adjusted the order of annotation legends
• discreat legend: if a level is not in the data while defined by 'col', it will be removed.

ComplexHeatmap 1.11.2

• 'grid.dendrogram()': do not draw dendrogram if the height is zero
• 'densityHeatmap()': support clustering on columns and more controls on column settings

ComplexHeatmap 1.11.1

• 'draw,HeatmapList-method' can control row order and clustering of the main heatmap

ComplexHeatmap 1.9.7

• add 'Legend()' function which is more flexible to generate different types of legends.

ComplexHeatmap 1.9.6

• 'color_mapping_legend()', there are ticks on continuous color bar

ComplexHeatmap 1.9.5

• add a section in the vignette to show how to adjust positions of column names when there are bottom annotations.
• fixed a bug that character NA values can not to assigned with na_col
• extra character 'at' and 'labels' in legends will be removed automatically
• all arguments which are passed to 'make_layout()' are all explicitly put in 'draw()' instead of using ...

ComplexHeatmap 1.9.4

• heatmap bodied can be set as raster images if number of rows are too huge

ComplexHeatmap 1.9.3

• graphic parameters are correctly recycled in row annotations
• if there is only one row after splitting, there will be no dendrogram
• add 'range' option in 'densityHeatmap()'
• when 'gap' is set for the main heatmap, other heatmps also adjust their 'gap' values to it
• fixed a bug that when rownames/colnames are not complete, dendrograms are corrupted
• 'alter_fun' now supports adding graphics grid by grid
• add 'show_pct' option in 'oncoPrint()'
• add 'column_order' in 'densityHeatmap()'

ComplexHeatmap 1.9.2

• imporved example of 'anno_link()'

ComplexHeatmap 1.9.1

• width of the heatmap body are calculated correctly if it is set as a fixed unit
• there is no dendrogram is nrows in a row-slice is 1
• add 'anno_link()' annotation function
• bottom annotations are attached to the bottom edge of the heatmap if there are additional blank space
• colors for NA can be set by "_NA_" in annotations
• 'row_dend_reorder' and 'column_dend_reorder' are set to 'TRUE' by default again -_-!!
• optimize the way to specify na_col in heatmap annotations
• correct wrong viewport names in decorate_* functions

ComplexHeatmap 1.7.3

• 'oncoPrint()': add 'barplot_ignore' option to remove alterations that are not put on the barplot.
• 'oncoPrint()': delete extra alter_fun if they are not in the matrix

ComplexHeatmap 1.7.2

• for 'anno_points()', 'anno_barplot()', 'anno_boxplot()', the name is assigned to the viewport with data ranges
• oncoPrint(): top_annotation is assigned with correct height

ComplexHeatmap 1.7.1

• 'x' and 'y' are 'unit' object now in 'cell_fun'
• add an example to visualize GO game
• transparency is kept when making discreate color mappings
• 'oncoPrint()': barplots on top now are controlled by 'top_annotation' argument

ComplexHeatmap 1.5.1

• 'oncoPrint': there are default graphics if type of alterations is less than two.
• 'anno_*': get rid of lazy loading

ComplexHeatmap 1.4.4

• NULL can be added to the heatmap list
• give message if users mess up with row and column annotations
• 'oncoPrint': columns are sorted by 'memo sort' method to enhance the mutual exclusivity.

ComplexHeatmap 1.4.3

• 'anno_boxplot': outliers can correctly plotted
• add a new function 'enhanced_basicplot'
• fix a bug that order of annotation height is reversed

ComplexHeatmap 1.4.2

• order of annotations can be adjusted arbitrarily
• anno_barplot: scales are adjusted according to the baseline

ComplexHeatmap 1.4.1

• revised the vignettes

ComplexHeatmap 1.4.0

• returned value for 'draw' method has been changes
• add 'row_order', 'column_order', 'row_dend' and 'column_dend' to extract orders and dendrograms after heatmap clustering
• add 'select' function to interactively select sub region in the heatmap and retrieve row/column index in the selected sub region.
• renames all varialbes '*hclust*' to '*dend*'

ComplexHeatmap 1.3.3

• set 'row_reorder' and 'column_reorder' to FALSE by default in 'Heatmap()'

ComplexHeatmap 1.3.2

• fixed the error in the vignette header

ComplexHeatmap 1.3.1

• padding of whole plot are correctly set now

ComplexHeatmap 1.3.0

• parameters for legend are specified by a list
• vignette was split into several vignettes which focus on specific topics
• ColorMapping class suppoorts 'at' and 'labels'
• add 'row_anno_*' and 'column_anno_*' functions
• 'anno_barplot' add 'baseline' option to define the baseline of bars
• change default colors for matrix
• allow heatmap with zero-row
• heatmap components can all have absolute units
• add 'oncoPriint()'

ComplexHeatmap 1.2.8

• add decorate* functions

ComplexHeatmap 1.2.7

• add 'rows_reorder_weight' and 'columns_reorder_weight' in 'Heatmap()'
• 'draw,HeatmapList-method' returns a list of orders
• clustering is stored as dendrogram internally

ComplexHeatmap 1.2.6

• graphical parameters for row names can be set as same length as row slices
• graphical parameters for annotation functions are consistent with the matrix now
• insert 'k = NULL' into anno_function if they are row annotations
• add a new vignette "quick examples"
• change style for continuous legend color bar
• label order of discrete legend has been adjusted (now it is from top to bottom)

ComplexHeatmap 1.2.5

• add dependency of base packages

ComplexHeatmap 1.2.4

• name for ColorMapping object has default value now.
• legend for continuous values can be set as continuous legends
• row title and column title as well as legend title support expression
• add 'heatmap_legend_title' in 'Heatmap' and 'ColorMapping'
• fixed a bug in 'plotDataFrame'

ComplexHeatmap 1.2.3

• 'color_mapping_legend' can produce a continuous color legend
• 'color_mapping_legend' now returns a grob object

ComplexHeatmap 1.2.2

• adjust positions for row titles
• rows can be split if 'cluster_rows' are a clustering object
• 'row_order' and 'column_order' can be set by dimension names

ComplexHeatmap 1.2.1

• adjust orders of row slices
• support text rotation for heatmap titles

ComplexHeatmap 1.2.0

• correct row orders if km and row_order is set in 'Heatmap'

ComplexHeatmap 1.1.9

• adjust names and size of each component
• add 'densityHeatmap' function which visualizes column distribution in a matrix
• add 'plotDataFrame' function which provides a quick way to visualize a data frame

ComplexHeatmap 1.1.8

• dendrograms are implemented by 'grid.segments'
• setting padding for each component
• adjust gaps between heatmaps/row annotations if the column of the heatmap is zero.

ComplexHeatmap 1.1.7

• check consistency of matrix row names

ComplexHeatmap 1.1.6

• improved generation of random colors
• order of heatmap annotation legends are same as the order of annotations
• support NA value in simple annotations
• add examples in the vignette
• simple row annotations now have the correct order
• 'col' can be a vector of colors if matrix is continuous
• simple annotation can be logical

ComplexHeatmap 1.1.5

• add gaps between heatmap components

ComplexHeatmap 1.1.4

• support color mapping for NA values

ComplexHeatmap 1.1.3

• Improved vignette to describe how to use row index in row annotation function if row annotations are also splitted by rows.

ComplexHeatmap 1.1.2

• 'anno_density': graphics are now in correct order
• add 'anno_text'
• add new examples corresponding to new functions

ComplexHeatmap 1.1.1

• fixed a bug when setting 'cluster_rows' to FALSE but still cluster on rows.
• add 'rowAnnotation' and 'columnAnnotation' functions
• add examples in the vignette
• No error if the heatmap list only contains zero-column matrix

ComplexHeatmap 0.99.2

• add two examples in vignette
• add chunk labels in the vignette

ComplexHeatmap 0.99.1

• x and y in 'cell_fun' are now 'unit' objects.

ComplexHeatmap 0.99.0

• First release