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 KiB) downloaded 62 time(s). (old method)

delete_rowcol.sm (15 KiB) downloaded 67 time(s). (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 KiB) downloaded 67 time(s).

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 KiB) downloaded 59 time(s).

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 KiB) downloaded 63 time(s).

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

New_Matrix_Delete [col_row]_R2.sm (38 KiB) downloaded 64 time(s).



Best regards.
Alvaro.

Utilities Matrix Minor [col_row] ADVANCED OTHERWISE Copy.sm (97 KiB) downloaded 64 time(s).