nonzero: find nonzero entries in a sparse (dgcMatrix) matrix

In trichelab/velocessor: The world's dumbest single-cell RNA velocity calculator and loader

Description

find nonzero entries in a sparse (dgcMatrix) matrix

Usage

nonzero(x, agg = NA)

nz(x)

nz_rows(x)

nz_rownames(x)

nz_byrow(x)

nz_cols(x)

nz_colnames(x)

nz_bycol(x)

Arguments

x	the matrix

Details

nz is borrowed from the DAPAR package and is the base function. nz_rownames returns the rownames for nonzero rows of x. nz_rows just wraps unique(x@i) for a dgCMatrix x. nz_colnames returns the colnames for nonzero columns of x. nz_cols finds nonzero columns of a dgCMatrix x. nonzero retains additional information about x alongside nz. These are handy for (e.g.) computing TPMs and the like in 3'/5' data.

Value

 for `nonzero`, a list with elements "nz", "nrow", and "ncol"

trichelab/velocessor documentation built on Jan. 5, 2022, 6:27 p.m.