do_SCExpressionHeatmap: Perform a single-cell-based heatmap showing the expression of...

In enblacar/SCpubr: Generate Publication Ready Visualizations of Single Cell Transcriptomics Data

Perform a single-cell-based heatmap showing the expression of genes.

Description

This function is heavily inspired by DoHeatmap.

Usage

do_SCExpressionHeatmap(
  sample,
  features,
  assay = NULL,
  slot = NULL,
  group.by = NULL,
  features.order = NULL,
  metadata = NULL,
  metadata.colors = NULL,
  subsample = NA,
  cluster = TRUE,
  interpolate = FALSE,
  xlab = "Cells",
  ylab = "Genes",
  font.size = 14,
  font.type = "sans",
  plot.title = NULL,
  plot.subtitle = NULL,
  plot.caption = NULL,
  legend.position = "bottom",
  legend.title = "Expression",
  legend.type = "colorbar",
  legend.framewidth = 0.5,
  legend.tickwidth = 0.5,
  legend.length = 20,
  legend.width = 1,
  legend.framecolor = "grey50",
  legend.tickcolor = "white",
  strip.text.color = "black",
  strip.text.angle = 0,
  strip.spacing = 10,
  legend.ncol = NULL,
  legend.nrow = NULL,
  legend.byrow = FALSE,
  min.cutoff = NA,
  max.cutoff = NA,
  number.breaks = 5,
  main.heatmap.size = 0.95,
  enforce_symmetry = FALSE,
  use_viridis = FALSE,
  viridis.palette = "G",
  viridis.direction = -1,
  na.value = "grey75",
  diverging.palette = "RdBu",
  diverging.direction = -1,
  sequential.palette = "YlGnBu",
  sequential.direction = 1,
  proportional.size = TRUE,
  verbose = TRUE,
  border.color = "black",
  plot.title.face = "bold",
  plot.subtitle.face = "plain",
  plot.caption.face = "italic",
  axis.title.face = "bold",
  axis.text.face = "plain",
  legend.title.face = "bold",
  legend.text.face = "plain"
)

Arguments

sample	Seurat | A Seurat object, generated by CreateSeuratObject.
features	character | Features to represent.
assay	character | Assay to use. Defaults to the current assay.
slot	character | Data slot to use. Only one of: counts, data, scale.data. Defaults to "data".
group.by	character | Metadata variable to group the output by. Has to be a character of factor column.
features.order	character | Should the gene sets be ordered in a specific way? Provide it as a vector of characters with the same names as the names of the gene sets.
metadata	character | Categorical metadata variables to plot alongside the main heatmap.
metadata.colors	named_list | Named list of valid colors for each of the variables defined in metadata.
subsample	numeric | Number of cells to subset for the analysis. NA will use all. Cells are selected at random.
cluster	logical | Whether to perform clustering of rows and columns.
interpolate	logical | Smoothes the output heatmap, saving space on disk when saving the image. However, the image is not as crisp.
xlab, ylab	character | Titles for the X and Y axis.
font.size	numeric | Overall font size of the plot. All plot elements will have a size relationship with this font size.
font.type	character | Base font family for the plot. One of: mono: Mono spaced font. serif: Serif font family. sans: Default font family.
plot.title, plot.subtitle, plot.caption	character | Title, subtitle or caption to use in the plot.
legend.position	character | Position of the legend in the plot. One of: top: Top of the figure. bottom: Bottom of the figure. left: Left of the figure. right: Right of the figure. none: No legend is displayed.
legend.title	character | Title for the legend.
legend.type	character | Type of legend to display. One of: normal: Default legend displayed by ggplot2. colorbar: Redefined colorbar legend, using guide_colorbar.
legend.framewidth, legend.tickwidth	numeric | Width of the lines of the box in the legend.
legend.length, legend.width	numeric | Length and width of the legend. Will adjust automatically depending on legend side.
legend.framecolor	character | Color of the lines of the box in the legend.
legend.tickcolor	character | Color of the ticks of the box in the legend.
strip.text.color	character | Color of the strip text.
strip.text.angle	numeric | Rotation of the strip text (angles).
strip.spacing	numeric | Controls the size between the different facets.
legend.ncol	numeric | Number of columns in the legend.
legend.nrow	numeric | Number of rows in the legend.
legend.byrow	logical | Whether the legend is filled by row or not.
min.cutoff, max.cutoff	numeric | Set the min/max ends of the color scale. Any cell/group with a value lower than min.cutoff will turn into min.cutoff and any cell with a value higher than max.cutoff will turn into max.cutoff. In FeaturePlots, provide as many values as features. Use NAs to skip a feature.
number.breaks	numeric | Controls the number of breaks in continuous color scales of ggplot2-based plots.
main.heatmap.size	numeric | Controls the size of the main heatmap (proportion-wise, defaults to 0.95).
enforce_symmetry	logical | Return a symmetrical plot axes-wise or continuous color scale-wise, when applicable.
use_viridis	logical | Whether to use viridis color scales.
viridis.palette	character | A capital letter from A to H or the scale name as in scale_fill_viridis.
viridis.direction	numeric | Either 1 or -1. Controls how the gradient of viridis scale is formed.
na.value	character | Color value for NA.
diverging.palette	character | Type of symmetrical color palette to use. Out of the diverging palettes defined in brewer.pal.
diverging.direction	numeric | Either 1 or -1. Direction of the divering palette. This basically flips the two ends.
sequential.palette	character | Type of sequential color palette to use. Out of the sequential palettes defined in brewer.pal.
sequential.direction	numeric | Direction of the sequential color scale. Either 1 or -1.
proportional.size	logical | Whether the groups should take the same space in the plot or not.
verbose	logical | Whether to show extra comments, warnings,etc.
border.color	character | Color for the border of the heatmap body.
plot.title.face, plot.subtitle.face, plot.caption.face, axis.title.face, axis.text.face, legend.title.face, legend.text.face	character | Controls the style of the font for the corresponding theme element. One of: plain: For normal text. italic: For text in itallic. bold: For text in bold. bold.italic: For text both in itallic and bold.

Value

A ggplot2 object.

Examples

  # Check Suggests.
  value <- SCpubr:::check_suggests(function_name = "do_SCExpressionHeatmap", passive = TRUE)
  
  if (isTRUE(value)){
    # Consult the full documentation in https://enblacar.github.io/SCpubr-book/
    
    # Define your Seurat object.
    sample <- readRDS(system.file("extdata/seurat_dataset_example.rds", package = "SCpubr"))
    
    p <- SCpubr::do_SCExpressionHeatmap(sample = sample,
                                        features = rownames(sample)[1:2],
                                        subsample = NA)
    p
    
  } else if (base::isFALSE(value)){
    message("This function can not be used without its suggested packages.")
    message("Check out which ones are needed using `SCpubr::state_dependencies()`.")
  }

enblacar/SCpubr documentation built on Aug. 25, 2024, 9:45 p.m.