plt.pcolormesh(x1,x2,grid_hat,cmap=cm_light)
MatplotlibDeprecationWarning: shading=‘flat’ when X and Y have the same dimensions as C is deprecated since 3.3. Either specify the corners of the quadrilaterals with X and Y, or pass shading=‘auto’, ‘nearest’ or ‘gouraud’, or set rcParams[‘pcolor.shading’]. This will become an error two minor releases later. plt.pcolormesh(x1,x2,grid_hat,cmap=cm_light)
plt.pcolormesh(x1,x2,grid_hat,shading='auto',cmap=cm_light)