nonzero | R Documentation |
This function retrieves the indices of non-zero elements in sparse matrices
of class dgCMatrix from package Matrix. This function is largely inspired from
the package RINGO
nonzero(x)
x |
A sparse matrix of class dgCMatrix |
A two-column matrix
Samuel Wieczorek
mat <- Matrix(c(0,0,0,0,0,1,0,0,1,1,0,0,0,0,1), nrow=5, byrow = TRUE, sparse=TRUE) res <- nonzero(mat)
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