Wrapper to run chromVAR on an assay with a motif object present. Will return a new Seurat assay with the motif activities (the deviations in chromatin accessibility across the set of regions) as a new assay.

RunChromVAR(object, ...)

# S3 method for ChromatinAssay
RunChromVAR(object, genome, motif.matrix = NULL, verbose = TRUE, ...)

# S3 method for Seurat
RunChromVAR(
  object,
  genome,
  motif.matrix = NULL,
  assay = NULL,
  new.assay.name = "chromvar",
  ...
)

Arguments

object

A Seurat object

...

Additional arguments passed to getBackgroundPeaks

genome

A BSgenome, DNAStringSet, FaFile, or string stating the genome build recognized by getBSgenome.

motif.matrix

A peak x motif matrix. If NULL, pull the peak x motif matrix from a Motif object stored in the assay.

verbose

Display messages

assay

Name of assay to use

new.assay.name

Name of new assay used to store the chromVAR results. Default is "chromvar".

Value

Returns a Seurat object with a new assay

Details

See the chromVAR documentation for more information: https://greenleaflab.github.io/chromVAR/index.html

See the chromVAR paper: https://www.nature.com/articles/nmeth.4401

Examples

if (FALSE) {
library(BSgenome.Hsapiens.UCSC.hg19)
RunChromVAR(object = atac_small[["peaks"]], genome = BSgenome.Hsapiens.UCSC.hg19)
}
if (FALSE) {
library(BSgenome.Hsapiens.UCSC.hg19)
RunChromVAR(object = atac_small, genome = BSgenome.Hsapiens.UCSC.hg19)
}