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I am making a map of Africa in QGIS. The colors selection is randomly, but I need to make sure there are no two similar colors for polygons that are touching each other lake Egypt and Sudan.

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I have tried to change the setting in the color ramp selection, but it did not yield any results. Is there a way to set the setting so there will not be two similar colors one next to each other?

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In qgis 2.99 there is the topological coloring processing tool that give you exactly that (it add a column so after using it you could use your data in earlier version of qgis)

enter image description here

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  • Where can I download QGIS 2.99? The last version in the website is 2.18.15? Commented Jan 11, 2018 at 12:29
  • You need to download the OSGeo4W network installer from here (qgis.org/en/site/forusers/download.html) and then install the development version of QGIS. Commented Jan 11, 2018 at 12:37
  • From the qgis website "For users that cannot use OSGeo4W for some reason or just prefer it there is also a weekly snapshot of qgis-dev from OSGeo4W as standalone installer (taken on monday). In the feature freeze phase that also acts as release candidate." The download link is : qgis.org/downloads/weekly/?C=M;O=D
    – J.R
    Commented Jan 11, 2018 at 12:40

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