enthought/chaco — pull request #129 by corranwebster (2013-06-10 18:13:46+00:00)
Title: Add support for grid mappers with fixed aspect ratios

This allows a grid mapper to keep a constant aspect ratio between the x-scale and y-scale. In particular, this allows various 2D plots to specify a mapper that keeps the shape of pixels in an image at a fixed aspect ratio by setting it on the underlying grid mapper.

This will (probably) only work with linear mappers.

TODO: should add an example of use.