Heatmap of data not on a grid

[stevengj]

You can use PyPlot.jl (or PythonPlot.jl) or GMT.jl, for example, both of which support this by triangulating irregular data onto a mesh and then linearly interpolating from that.

Heatmap plots with X and Y matrix instead of vectors

Hi all, I want to know if it is possible to make heatmap plots type with X and Y matrix instead of using X and Y vectors. In fact my X and Y matrix are longitude and latitude and the Z matrix are geostationnary satellites radiances where all matrix have same size ; 3712x3712 up to 12000x12000. for all matrix their corners are nan (space pixels). I didnot find examples on this website Home · Plots later I will have to draw the cost lines over this image plot. I used to use Matlab ( pcolor(X,Y…

(There are also various packages that can do unstructured-points interpolation, see e.g. 2D Interpolation on an irregular grid, also Dierckx.jl and BasicInterpolators.jl and KernelInterpolation mentioned above.)