Matrix (version 1.7-6)

dgCMatrix-class: Compressed, sparse, column-oriented numeric matrices

Description

The dgCMatrix class is a class of sparse numeric matrices in the compressed, sparse, column-oriented format. In this implementation the non-zero elements in the columns are sorted into increasing row order. dgCMatrix is the “standard” class for sparse numeric matrices in the Matrix package.

See Also

Classes dsCMatrix, dtCMatrix, lu

Examples

 
library(utils, pos = "package:base", verbose = FALSE)

(m <- Matrix(c(0,0,2:0), 3,5))
str(m)
m[,1]
## regression test: this must give a validity-check error:
stopifnot(inherits(try(new("dgCMatrix", i = 0:1, p = 0:2,
                           x = c(2,3), Dim = 3:4)),
          "try-error"))