WISH: rowSort

[kasperdanielhansen]

Return value when index.return = TRUE would be a list of 2 matrices.

[arrayn]

I second this. I was going to ask for this myself. Maybe something like this:

• matrixStats::rowOrder returns matrix of indices as per base::order()
• matrixStats::rowSort returns sorted matrix as per base::sort()
• matrixStats::rowOrderSort returns a list containing the above matrices.

[traversc]

Hi @HenrikBengtsson I'm interested in working on this and putting in a PR. The plan would be to:

• Use colRanks/rowRanks as a style-guide
• Copy row or column data into new memory
• Use standard library function qsort to sort data in new memory
• Make sorting function NA aware, na.last parameter
• Copy the results of qsort into the output matrix

Do you see any issue with this? Is there anything to look out for before writing a PR?