polygon - Keep customized colors with geom_polygon() - Geographic Information Systems Stack Exchange

I have plotted a map of France with customized colors with map(): map(database="france", fill=TRUE, col=color) Results: (don't mind the two errors) and then I want to put this map with a projec

polygon - Keep customized colors with geom_polygon() - Geographic Information Systems Stack Exchange

r - distill colors of polygons on a map with ggplot2 - Stack Overflow

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mapping - Plotting islands in ggplot2 - Geographic Information Systems Stack Exchange

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Custom color in a map(polygons) by ggplot in R and plot a legend - Stack Overflow

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Changing border opacity in R ggmap() - Geographic Information Systems Stack Exchange