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EU4 Map Making
#1
I am making a blank paintable map from a game's map that it uses to make the provinces in-game. I want to know how to make the border between all the different colours instead of individually selecting them and making a border.
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#2
Can you post an example of your map, if it is big, part of it will do. How it is made will influence the method.

For example this is using a Gimp plugin g'mic http://www.gmic.eu It will add borders (in black) between colours. Which might be sufficient. But any existing outlines will be reinforced, which might not be so good.

screenshot gimp and gmic: https://i.imgur.com/dPJGrgH.jpg
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#3
(04-22-2018, 04:51 PM)rich2005 Wrote: Can you post an example of your map, if it is big, part of it will do. How it is made will influence the method.

For example this is using a Gimp plugin g'mic http://www.gmic.eu It will add borders (in black) between colours. Which might be sufficient. But any existing outlines will be reinforced, which might not be so good.

screenshot gimp and gmic: https://i.imgur.com/dPJGrgH.jpg

https://xylozi.files.wordpress.com/2014/09/tut_1.png not actually mine but the map is like that pretty much
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#4
I can see why you might not want to treat each area individually. Do you need the sea? Assuming not.

(edit: I hope the images you are working on are larger than the size the example seems to be.)

One way is using colour selections and selection-to-path

01. Reduce the number of colours. Several ways but I favour changing the image mode to indexed Image -> Mode -> Indexed

screenshot: https://i.imgur.com/6tzQsFM.jpg

02. I put the colormap map up for reference in the screenshot, but colour select each required colour (maybe sea is not required) and for each selection make a path. Select -> To Path Good idea to keep the path visibility on for each path to see progress.

screenshot: https://i.imgur.com/dEng69N.jpg

03. Now convert back to RGB Image -> Mode -> RGB (and a good time to save your image as a Gimp .xcf file with those paths). You can keep the separate paths or combine into one - right click, merge visible paths.

screenshot: https://i.imgur.com/1pjD8DB.jpg

04. Make a new layer for a border overlay. Stroke the path(s) Edit -> Stroke Path

screenshot: https://i.imgur.com/cbco6RX.jpg

05: Now Import the original back in Open as Layers and put under the border overlay.

screenshot: [Image: qrPzK3o.jpg]
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