[Matplotlib-users] How to properly define lat/lon WGS84 in basemap module?

[R. A. <ra...@gm...>]

Hi All,

I have some square images which were generated via WMS requests.  I have
imported them into Matplotlib via pil_to_array, and then display them in a
Basemap instance where I have defined the projection as:

m = Basemap(projection='cyl', lon_0=lon_0, llcrnrlon=ll_lon,
llcrnrlat=ll_lat, urcrnrlon=ur_lon,
            urcrnrlat=ur_lat, suppress_ticks=False)

While this works (it appears the tics are at the right places), the image is
no longer square, and I wonder if my projection definition is correct.

Can someone show me what the correct Basemap parameters are for working with
images that are in EPSG:4326?

Thanks,

Roger