one final answer: If you have to process a lot of files I would
recommend you to wirte a script, especially if the same tasks have to be
performed very often.
GIMP-standard-scripts are written in scheme. I prefer perl-GIMP. If I
can help you with this, let me know.


Gary Aitken schrieb:
> Hi Brent,
> For painting, try this:
> Once you have the area selected, by whatever means:
> Create a new layer containing only the selected areas,
> with a transparent background in other areas:
>   Edit/Copy (ctrl-C on windows)
>     This will copy everything in the selection (green areas, roads, etc)
>   Create a new layer.
>     Make sure "Transparent" is selected for background type when
>     creating it.
>     The layer will become the currently selected layer
>   Edit/Paste (ctrl-V on windows)
>   Click on the eyeball of original background in the layers dialog
>     The background will disappear;
>     you will be left with only your new layer being visible.
>     The transparent parts will be a grey checkerboard.
>   At this point, nothing is selected.
> Select everything except the transparent area.
>   Click on the "Select by Color" tool
>   Uncheck the "Select transparent areas" check box in the tool's options
>   Set the threshold to 255
>   Click anywhere in the image not on the transparent background.
>   The selection will be outlined with an
>     alternating black-and-white, blinking line.
> Fill the selection with the color you want:
>   Select the color you want to use:
>     Double-click on the foreground color
>       (upper square, usually black, in lower left corner of the toolbox)
>     A dialog for choosing colors should appear.
>       Note the box which shows "current" and "old" color
>       Tweak the sliders or the color choice tool (object in left square)
>         to get the color you want shown as the "current" color
>       Click ok.
>     Note the upper square showing the foreground color in the toolbox
>       should now have the color you want to paint with.
>   Click on the bucket-fill tool
>     Make sure "FG color fill" is selected in the tool's options
>     Make sure "Fill whole selection" is selected in the tool's options
>     Click anywhere in the selection.
>       It should all change to a solid color with the new color;
>       transparent areas, outside the current selection, should still
>       show a gray checkerboard.
>   If you want the colored part to be partially transparent,
>     Use the "Opacity" slider for the layer.
> Save the result.
> If you find the final area covers more than you thought it would,
> it is probably because the original selection contained stuff
> you weren't aware of.
> This will happen if you leave any of "Anti-aliasing" or "Feather
> edges" or "Select transparent areas" or "Sample merged" checked
> when making your original selection.
> Gary
> On 1/26/2012 1:57 PM, Brent Shifley wrote:
>> Again I want to say thanks to all of you that helped me. I have
>> another 77 images to process, and what you have sent me helped a lot.
>> I was not able to follow the trick for "painting" 100+ different
>> areas the same color, at the same time.  As I stated before I am an
>> absolute newbie to Gimp, and sometimes have need little "extra" help
>> in understanding how to do a step/process/procedure, and why.  Any
>> other help would be appreciated.
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