Read matrix from file

A function factory to read matrix with given number of columns from a file. The matrix is read row-wise (with byrow = TRUE).

read_matrix(ncol)

Arguments

ncol	integer, expected number of columns, passed to base::matrix().

Value

function with 1 argument: file

Examples

m <- matrix(1:6, ncol = 3)
tf <- tempfile()
write(t(m), file = tf, ncolumns = 3)
rm3 <- read_matrix(ncol = 3)
rm3(tf)
#>      [,1] [,2] [,3]
#> [1,]    1    3    5
#> [2,]    2    4    6