collapse_to_n_windows: Collapse Matrix To Windows by Window Number
In manschmi/RMetaTools: Tools For Metagene Analysis

Description Usage Arguments Details Value Examples

Averages Matrix Columns into Windows using an Averaging Function amd a defined number of windows

1	collapse_to_n_windows(anno, mat, collapse_fun = mean, n_windows = 10)

`mat`	matrix
`collapse_fun`	function for averaging values inside windows (Default = rowMeans, see Details).
`n_windows`	number of windows (default=10, ie collapse to 10 values eah)

for a matrix with ncol=100 or 50 and n_windows=10, will return a matrix with ncol=10 in both cases. collapse_fun is a function that functions as ie rowMeans (the default) or rowSums.

matrix with n_windows columns

bedfile <- system.file("extdata", "snRNA_MS31_hg38.bed", package = "RMetaTools")
regions <- rtracklayer::import(bedfile)
mat <- get_single_strand_matrix(bw=bw, anno=regions, upstream=NULL, downstream=NULL)
dim(mat)
matc <- collapse_to_n_windows(anno, mat, mean, 10)
dim(matc)