mpl_toolkits.axisartist.grid_finder.
GridFinderBase
(extreme_finder, grid_locator1, grid_locator2, tick_formatter1=None, tick_formatter2=None)[source]¶the transData of the axes to the world coordinate. locator1, locator2 : grid locator for 1st and 2nd axis.
Derived must define "transform_xy, inv_transform_xy" (may use update_transform)