Convert a matrix into list of row vectors — c_ListofMatrixRows • natcpp

Convert a matrix into list of row vectors

c_ListofMatrixRows(object)

Arguments

object: An integer, numeric, character or logical matrix of N rows and M columns

Value

a list containing N vectors of length M corresponding to the rows of object.

Details

Typically this will be for 3D coordinates but there are no limits on row length.

Examples

if (FALSE) {
library(nat)
xyz=xyzmatrix(Cell07PNs)
mat2list = function(m) {
um=unname(m)
lapply(1:nrow(um), function(i) um[i,])
}
bench::mark(rcpp=c_ListofMatrixRows(xyz), r=mat2list(xyz))
}