MATLAB: I am trying to get the colorbar ticks to align with the color gradient

Question

Hello all, I have looked around on the community and have seen several colorbar posts but none of the examples (or questions) I saw have this problem.

Basically I want to have the colorbar tick labels line up with the changes in the color gradient. For example, the difference is most noticable at "0":

Notice the black ticks do not coincide with the changes in color. I clearly have 21 tick labels and therefore 20 spaces between each division, so I tried

colormap(parula(20));

But since it didn't line up I tried 21 and 19 but I cannot seem to get this to line up.

Any suggestions?

Thanks in advance.

Answer 1

This gives aligned ticks (at least in R2020a)

ax = axes();
ax.CLim = [-20 20];
colormap(ax, parula(20));
c = colorbar(ax);
c.Ticks = -20:2:20;