Subset matrix rows and columns

Source: R/utilities.R

Subset the rows and columns of a matrix by removing rows and columns with less than the specified number of non-zero elements.

SubsetMatrix(
  mat,
  min.rows = 1,
  min.cols = 1,
  max.row.val = 10,
  max.col.val = NULL
)

Arguments

mat

A matrix
min.rows

Minimum number of non-zero elements for the row to be retained
min.cols

Minimum number of non-zero elements for the column to be retained
max.row.val

Maximum allowed value in a row for the row to be retained. If NULL, don't set any limit.
max.col.val

Maximum allowed value in a column for the column to be retained. If NULL, don't set any limit.

Value

Returns a matrix

Examples

SubsetMatrix(mat = volcano)

#>      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14]
#>      [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [,25] [,26]
#>      [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34] [,35] [,36] [,37] [,38]
#>      [,39] [,40] [,41] [,42] [,43] [,44] [,45] [,46] [,47] [,48] [,49] [,50]
#>      [,51] [,52] [,53] [,54] [,55] [,56] [,57] [,58] [,59] [,60] [,61]