I am using the following to map out a trend in data over a region:
ax = worldmap(latlim, lonlim);
S = shaperead('landareas','UseGeoCoords',true);
surfacem(lat, lon, inpdata)
This should be simple but I am not seeing fora with it. Is there any way to now add in a surfacem plot of a matrix holding p-values of the trends? I would like to simply add a cross where the corresponding cell in the p-value matrix is < 0.05.