Error with patdavid-color-decompose.scm

[Underexposed (Bill Martz)]

I’ve placed patdavid-color-decompose.scm in my scripts folder and tried running it. I get ten layers, LAB-L is the last, and then I get the error message:

Execution error for ‘Color Decompose’:
Error: Procedure execution of plug-in-decompose failed

I suspect I am missing two layers.

This is on a Windows 10 64 bit running GIMP 2.10.6.

Any advice?

[patdavid]

Good question. I hadn’t updated that script in a while, and there’s possibly a change in names somewhere. I can try to have a look later or tomorrow when I’m at a handy GIMP install.

[edit] - what is the exact text of the error message? The script may be working fine, just exiting poorly.

[Underexposed (Bill Martz)]

@Underexposed

Execution error for ‘Color Decompose’:
Error: Procedure execution of plug-in-decompose failed

That’s the exact text. Plus the typical additional message that GIMP may be in an unstable state and images should be saved.

[Underexposed (Bill Martz)]

I don’t know what all it is supposed to produce, but I suspect what is missing is the two LUMA layers.

[Stampede]

I don’t often do my pix in B&W, but I got the same error and mentioned it in a post a few months ago, so I’m following this thread.

I did not consider the error a big deal at the time, because the script already DID produce so many different types of color decomposition, I figured that getting another 2 or three versions would not help all that much.

B&W Conversion in GIMP. Before and after Pixls.us

@patdavid 's article on digital B&W conversion was extremely helpful to me while processing this picture. In the past, when I went B&W with a picture, I would just use GIMP’s “desaturate” command, with whatever of the 3 options looked best. [girl-liquor] This time around, I used Pat’s color decompose script linked in his article. Then I broke the picture down into different sections - the girl’s face, girl’s jacket, bottles on the shelf, wall and floor underneath the glass window, and the mon…

[patdavid]

Odd, I just tried this downloading a fresh copy of the script and it appears to work w/o tripping an error (GIMP 2.10.6). Which version of GIMP are you on?

The B&W layers should be:

That’s:

• Luma - y709f
• Luma - y470f
• LAB - L
• CMYK - K
• HSL - Lightness
• HSV - Value
• RGB - Blue
• RGB - Green
• RGB - Red

Also, for reference, here’s the script I’m using:

pixlsus/GIMP-Scripts/blob/master/patdavid-color-decompose_0.3.scm

[Claes]

… and it seems to work just fine in The Gimp 2.10.6
and Manjaro xfce 18.0. @patdavid

Have fun!
Claes in Lund, Sweden

[Stampede]

@patdavid I got it to work properly when I updated the script to the one you linked on github.

Your article on B&W conversion points to the Gimp registry (dead?) and an old version on Google Drive.

Maybe you can update the link in the B&W conversion article?

Digital B&W Conversion (GIMP)

I can’t say enough…thanks for all your efforts to help people create better images!

[patdavid]

Yikes, good catch, thank you for that @Stampede! I’ll update the post asap.

(Also, yay, it works!)

[Underexposed (Bill Martz)]

My problem was the old link also. I was using the script downloaded from Google. Yes, it does work! Thank you, Pat, not only for that script, but also all your excellent articles.