How to delete a set of meshgrid points inside a circle?

Question

I am trying to create a meshgrid without some of the points that falls within the circle having specified coordinates and a radius. I am not able to subtract the grid points

Answer 1

One can not simply remove points from a meshgrid. Instead, you should create another array Z as

Z = numpy.where((X-circle_x)**2+(Y-circle_y)**2>r**2,1,0)

and plot it as

plt.scatter(X,Y,Z)