Having a different mode for rxc vs cxr would be helpful on image sequences that start with coloumn number and row as second and vise versa

[Wetzer2]

Motivation
Need the feature to merge images that start with column number and second the row number and vise versa

Description
I have a Image sequence with the syntax "text1_text2.tga"
If I use the "standard" the Merged Spritesheet Image looks not correct. I think It should use the first number as column index and second number for put it horizontally right to it.

Alternatives
Best case would be some kind of expression function to describe witch number or "part" of a file name would be stand for "column" and which for "rows"