How to convert 3 band Geotiff to Palette

Dave_in_EdmontonDave_in_Edmonton Global Mapper UserPosts: 43Trusted User
edited February 2015 in Raster Data
Hi, I have several Geotiff that come as 3 band (RGB) tifs. I want to re-colour the various portions, but the only way I can see to do that is to save with a DRG palette which turns all treed are grey, and the lakes white. Is there a way to create my own unique palette? I tried the image optimized palette but that result has 255 colours (for each file loaded), with many within each file almost identical. I would like to have a DRG style palette of about 10 colours, but with my choice of colours. Below is the result of DRG palette.

Original
Original.png

DRG Palette
DRG.png
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