I plotted the contour plot of a function 1/(2pisqrt(x^2 + y^2)).
The code is below:
contour_plot(1/2/(pi*sqrt(x^2 + y^2)), (x,-0.1,0.1), (y,-0.1,0.1),plot_points=20, colorbar=True)
The output result is not round, but square! Why?
How to fix it?