Plotting streamlines in polar coordinates

I'm attempting to plot flow past a cylinder and figured out how to get the vector field to appear on the plot but the streamlines won't appear. I used the stream function psi=y.*(1-(1./r^2));

Answer 1

[Sulaymon Eshkabilov]

Use quiver() plot function to plot vector fields -see this documentation:

https://www.mathworks.com/help/matlab/ref/quiver.html

[Carlos Martinez]

I have the vector field already but it's the streamlines that fail to appear on the graph