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Number of pixels in selection

September 9, 2009 - 17:34 — draft34

Hi Im looking for a plug in or a command in GIMP that will tell me the number of pixels in a selection of an image, then copy that number to the clipboard using the mouse. Histogram will tell me the number of pixels I have selected, but I cant copy the actual number off of the histogram window with the mouse cursor.

Thanks

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September 10, 2009 - 01:45 — ffaat

Use the scheme console

and paste in the following command:
(cadddr (gimp-histogram (car (gimp-image-get-active-drawable [IMAGE])) HISTOGRAM-VALUE 0 256))

replacing [IMAGE] with the image number (from the top of the layer panel), or if only one image open, use this:

(cadddr (gimp-histogram (car (gimp-image-get-active-drawable (vector-ref (cadr (gimp-image-list)) 0))) HISTOGRAM-VALUE 0 256))

and it will return the number of pixels in the selection. Note this is alpha weighted, so transparent pixels aren't counted.

-Rob A>

September 10, 2009 - 02:23 — draft34

Pixels in selection

I pasted in the last code posted in your reply to my post. When I did I got the following error message..
Error: Procedure execution of gimp-histogram failed

September 18, 2009 - 15:44 — ffaat

layer active?

It should work if you have an active layer in the image.

Can someone else try it and report?

-Rob A>

September 20, 2009 - 15:16 — ffaat

Thanks

Thanks for testing.
Most likely a version issue - what version gimp are you using?

-Rob A>

September 19, 2009 - 20:59 — mahvin

Works on 2.6.7 on Vista 64 bit

and on 2.6.7. for:
XP
Vista 32 bit
Ubuntu (Jaunty)

I haven't tried 2.7 on Vista 32 bit yet.

September 19, 2009 - 17:09 — zigomar

It works (gimp-2.6.6 on

It works (gimp-2.6.6 on linux)