problem with axes size

The size of the image being plotted is (72, 2048), so that

    > behaviour sounds correct. The plot I see is shown here:


As Stefan notes, this is a feature not a bug, but it is relatively new
behavior since Mark Bakker and Eric Firing finally provided us with
good aspect handling. The new default is to maintain aspect ratio of
images, but if you want the old behavior, you can pass in
aspect='auto' into your image or set the image.aspect parameter in
your rc file.