The contour label (clabel) manual mode fails place any labels. When I click the plot I get an error: 'QuadContourSet' object has no attribute 'ax' and no labels are added. I put the Contour Label Demo ...
Originally posted here because I wasn't convinced it was a bug (I'm new to matplotlib)... but I'm increasingly convinced it is a bug, so here we are. I'm plotting some NCEP temperature anomaly data ...