[Matplotlib-users] Basemap - pcolormesh outside of projected area

All,

I am attempting to plot a base map with extents which are outside of the
figure using the following code:

#Map
lon_min = -101.5
lon_max = -94.5
lat_min = -32.5
lat_max = -27.5

m = Basemap(projection='aeqd',llcrnrlat=lat_min,urcrnrlat=lat_max,
            llcrnrlon=lon_min,urcrnrlon=lon_max,lon_0=-97.7328,
lat_0=-30.0906,resolution=None, rsphere=(1737400.0,1737400.0))

        #Read the input image
input_basemap = gdal.Open('Mare_Orientale_Volc_AzEqui.png')
input_band = input_basemap.GetRasterBand(1)
bmap = input_band.ReadAsArray()
        #The bounds of the input image using gdalinfo
LL = (-204690.290, -162184.543)
UR = (200909.710,  176915.457)


I know that I need to use pcolormesh() to get my map visualized.  I also
believe that I need to use the transform_scalar function to get from pixel
space to map projected space.  My input image is not in Lat/Lon, but in
pixel space.  Any suggestions on getting my image to display in projected
space?

Best,
Jay