Hello to the community here from yet another newbie again...

I want to horizontally flip a bunch of .png files in a folder, I tried to modify the sample script in the tutorial, but it does not seem to work as I see nothing and the images remain unaltered. Any idea what I am missing or where I can see what is going wrong ?

I copied this .scm file in the scripts folder.

(define (batch-flip image)
(let* ((filelist (cadr (file-glob pattern 1))))
(while (not (null? filelist))
(let* ((filename (car filelist))
(image (car (gimp-file-load RUN-NONINTERACTIVE
filename filename)))
(drawable (car (gimp-image-get-active-layer image))))
(gimp_drawable_transform_flip_simple image ORIENTATION_HORIZONTAL True 0)
(gimp-file-save RUN-NONINTERACTIVE
image drawable filename filename)
(gimp-image-delete image))
(set! filelist (cdr filelist)))))

and I issue this command:
SET gimpEXE="C:\Program Files\GIMP 2\bin\gimp-2.8.exe" %gimpEXE -i -b '(batch-flip "*.png")' -b '(gimp-quit 0)'

Any help is greatly appreciated

You have a couple of typos to start with.

Script-fu doesn't use underscores in the built-in function names and constants:


From the presence of "Program Files" in your command line, you're on Windows? Well you can't use single-quotes to enclose the batch command:



You've also defined the script as taking a variable called "image", but expect it to be called "pattern" when doing the file-glob

Kevin

whoops, me and typos, I should have copy pasted them, I am at the office at the moment but will try it as soon as I am home, thank you. Is there a debugging possibility in this environment ?

I use this for debugging:

This will send a message prefixed with "MyScript: " to your Error Console if you have one activated (see <Image>Windows>Dockable Dialogues>Error Console). [Change the "MyScript" to the name your script.]

To display variables, preformat the message using (string-append ) and (number->string )
eg.