Some functions for row and column deletion.
For row and column functions accepts horizontal and vertical vectors, range(2) and range(3), numbers.
No need to convert anything during input, and exceeding and subceeding values not be removed.

Regards

delete_rowcol.sm (21,39 KiB) scaricato 1446 volta(e). (old method)

delete_rowcol.sm (15,58 KiB) scaricato 1436 volta(e). (new and faster method)

Otherwise useful ... you delete what you don't select.

Alternate program. Very fast on large matrix.
Jean's program very helpful. Thank you Jean

New_Matrix_Delete [col_row].sm (24,06 KiB) scaricato 1314 volta(e).

Wrote

Alternate program. Very fast on large matrix.
Jean's program very helpful. Thank you Jean

I tried your solution and found out it is faster with single row or single column removal. Good job.
And also found out transpose method is way much slower if I use ranges or matrices for input.
That method is not fast enough and not a good method when you use vectors of columns or rows for removal.
So I have combined your solution with mine, a fast and feature-full method is born.
New file is added in first post.

Regards

From square/rectangular matrix algo style do all at will.

1. delete cols & rows in any shuffled ways.
2. conserve selected rows deleted of 'j'.
3. conserve selected cols deleted of 'j'.
Hopefully, no red in your SS version !
Thanks, be good ... Jean.

Utilities Matrix Minor [col_row] ADVANCED OTHERWISE Copy.sm (21,58 KiB) scaricato 1334 volta(e).

Wrote

I tried your solution and found out it is faster with single row or single column removal. Good job.
And also found out transpose method is way much slower if I use ranges or matrices for input.
That method is not fast enough and not a good method when you use vectors of columns or rows for removal.
So I have combined your solution with mine, a fast and feature-full method is born.
New file is added in first post.

Yes it works fast. It is a smart code with added features.
Thank you.

A revised version, to delete multiple non-adjacent columns.
Faster on large matrix than my last example in post #3.

New_Matrix_Delete [col_row]_R2.sm (41,9 KiB) scaricato 1288 volta(e).

Hi Amarasekera. Please try this other version, which works for single column values or column ranges.

New_Matrix_Delete [col_row]_R2.sm (38,79 KiB) scaricato 1276 volta(e).



Best regards.
Alvaro.

Utilities Matrix Minor [col_row] ADVANCED OTHERWISE Copy.sm (97,77 KiB) scaricato 1352 volta(e).