Bug report

Bug summary

It would be nice if the colorbars changed their number of ticks if the colorbar gets small.

Code for reproduction

importmatplotlibimportmatplotlib.pyplotaspltimportnumpyasnpX=np.random.rand(32,32)*20.fig,ax=plt.subplots()pc=ax.pcolormesh(X)fig.colorbar(pc)plt.show()fig,ax=plt.subplots(figsize=(4,1.))pc=ax.pcolormesh(X)fig.colorbar(pc)plt.show()

Actual outcome

Expected outcome

The full sized plot has 7 y-ticks and 7 colorbar ticks. Whichs is fine.

If I make the plot much smaller (as can happen if I have a bunch of subplots), then the y-axis decreases its number of ticks, but the colorbar doesn't.

No idea how easy this is, and I don't think its a must-do (we can use a manual locator), but it does seem the default should be that the colorbar gets treated as well as the y-axis.

Matplotlib version

• Master