Artifacts with contourf! and orthogonal projection

[tpoisot]

Here is the result of using the orthogonal projection with contourf! -- it works fine with surface! (on CairoMakie):

No idea where this is coming from, but I thought it was worth reporting?

[asinghvi17]

Ah - if I am not wrong that's an incorrect "projection" of some units of the contourf polygons from Infinity, which Proj transforms elements which are "off the map" into. There might be a quick fix for this by simply replacing any point with an Inf with a NaN point...

I am on vacation now but will get back to this in a couple of days. Until then you could try to only plot the section of your grid which is represented on the map projection...

[tpoisot]

So, all of the values are either Float64 or NaN already, and the coordinates are all valid (it works with surface!). I might try the second solution (but it's very much not urgent, just wanted to give you a heads up that contourf! had a weird behavior with this projection).

[asinghvi17]

This is still an issue with Makie, I guess the best alternative is to use heatmap or surface with a categorical colormap, unfortunately.