View source: R/matrix_transformations.R
Transfrom a full Hi-C contact matrix to a sparse upper triangular matrix
A matrix. Must have column names equal to the start location for each bin. i.e. for a 6x6 Hi-C matrix where the first region starts at 0 kb and the final region starts at 500KB and the resolution is 100kb, the column names of the matrix should be as follows: colnames(mat) = c(0, 100000, 200000, 300000, 400000, 500000)
A sparse upper triangular matrix.
m <- matrix(1:100, 10, 10) colnames(m) <- 1:10 sparse <- full2sparse(m) sparse
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