Add changeColors()
for changing the color of a map layer on the fly
#67
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This PR adds a function to re-map the colors of a leaflet layer on the fly. I had two closely related reasons for creating it:
It uses the gradientmaps JavaScript library to change the colors. For an example, here's a WMS layer as-is:
And here I've changed the colors using the
changeColors()
function:Here's the code to recreate the previous example:
I thought it might be a good fit for the
leafem
package, and it seems like something that could be useful for others as well. And from a more selfish point of view, it'd be nice for me if it was part of an already-existing package rather than its own tiny package, which is how I have it right now.No worries if you'd rather not include it in the package. Also, I'm happy to make any changes to the code and/or documentation.