I am writing to express my concern regarding the handling of legends for contour plots in recent versions of matplotlib. While line plots (plot) allow direct assignment of legend labels via the label ...

The class method in the title is expecting a dictionary with values of type list, and this is not documented, nor it is intuitive.

It is possible to set a logarithmic scale for one or both axes. This functionality is in fact only one application of a more general transformation system in Matplotlib. Each of the axes' scales are ...