| write10xCounts {DropletUtils} | R Documentation |
Create a directory containing the count matrix and cell/gene annotation from a sparse matrix of UMI counts, in the format produced by the CellRanger software suite.
write10xCounts(path, x, barcodes=colnames(x), gene.id=rownames(x),
gene.symbol=gene.id, overwrite=FALSE)
x |
A sparse numeric matrix of UMI counts. |
path |
A string containing the path to the output directory. |
barcodes |
A character vector of cell barcodes, one per column of |
gene.id |
A character vector of gene identifiers, one per row of |
gene.symbol |
A character vector of gene symbols, one per row of |
overwrite |
A logical scalar specifying whether |
A directory is produced at path containing the files "matrix.mtx", "barcodes.tsv" and "genes.tsv".
A TRUE value is invisibly returned.
Aaron Lun
10X Genomics (2017). Gene-Barcode Matrices. https://support.10xgenomics.com/single-cell-gene-expression/software/pipelines/latest/output/matrices
# Mocking up some count data.
library(Matrix)
my.counts <- matrix(rpois(1000, lambda=5), ncol=10, nrow=100)
my.counts <- as(my.counts, "dgCMatrix")
cell.ids <- paste0("BARCODE-", seq_len(ncol(my.counts)))
ngenes <- nrow(my.counts)
gene.ids <- paste0("ENSG0000", seq_len(ngenes))
gene.symb <- paste0("GENE", seq_len(ngenes))
# Writing this to file:
tmpdir <- tempfile()
write10xCounts(tmpdir, my.counts, gene.id=gene.ids,
gene.symbol=gene.symb, barcodes=cell.ids)
list.files(tmpdir)