Keep image names but add suffix

[Valkarin]

I have a lot of images that I would like to split in two equal sizes, but I would like to keep the original name, but add an a to the leftmost part and a b to the right most part after the split. I know how to split the images, but don't know about naming output files this way. Currently, I just name the new files split000.png. Any ideas or at least where to look?

[fmw42]

What is your IM version and platform, since syntax may differ? Please always provide that when asking questions.

It is easy to add numbers, but not letters.

Code: Select all

convert lena.png -crop 50x100% +repage lena_%d.png

returns lena_0.png lena_1.png

I am not sure how one would add letters.

[fmw42]

The only way I can think to do that is

Code: Select all

convert logo.png -write mpr:img +delete \
\( mpr:img -gravity west -crop 50x100%+0+0 +repage +write logo_a.png \) \
\( mpr:img -gravity east -crop 50x100%+0+0 +repage +write logo_b.png \) \
null:

[snibgo]

An alternative that uses less memory (bash syntax):

Code: Select all

convert logo: -crop 50x100% +repage \
  \( -clone 0 -write logo_a.png +delete \) \
  -delete 0 \
  logo_b.png