my trouble is that i’m doing a non-regular mesh, and when i make a plot with scatter the points the picture shows this.
scatter plot of coordinates

I am trying to make Python plots of the monthly tropical cyclone (TC) track climatology in the Southern Pacific basin. But, the gridded heatmap of the frequency of TC track passage per grid that I was supposed to make using pcolormesh does not appear on the plot, resulting in a map with plain white background.