read_matrix: Load mtx formatted 10x or haircut matrices
In hesselberthlab/scrunchy: Single Cell Reconstruction of Functional Heterogeneity

Load mtx formatted 10x or haircut matrices

read_matrix(path, cell_prefix = NULL, strip_10x_suffix = TRUE,
  use_gene_symbols = TRUE, split_matrix = FALSE,
  matrix_fn = "matrix.mtx.gz", features_fn = "features.tsv.gz",
  barcodes_fn = "barcodes.tsv.gz")

`path`	path to directory with mtx matrix
`cell_prefix`	string to prefix to cell_id (default = NULL)
`strip_10x_suffix`	remove numeric suffix added by 10x e.g. change "TTTGTCAAGGTGTGGT-1" to "TTTGTCAAGGTGTGGT" (default = TRUE)
`use_gene_symbols`	If TRUE use gene symbols as row.names, if false then gene_ids will be used (default = TRUE)
`split_matrix`	Return a list of matrices split by feature types. Requires cellranger v.3 output.
`matrix_fn`	filename for matrix
`features_fn`	filename for genes file
`barcodes_fn`	filename for barcodes file