Using basemap it's easy to plot a set of coordinates, like so:
x, y = m(lons, lats)
m.plot(x, y, 'go')
but would it be possible to use an image instead of the green circle ('go')? I didn't find a direct way of doing this from the documentation.
So, let's clarify this a bit: I'm using a map generated with basemap as a background and would like to plot some .png images on top of it instead of the regular plain markers.
If you want to draw .png images then you should try http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.imshow
You might also be interested in the Matplotlib Basemap toolkit. http://matplotlib.sourceforge.net/basemap/doc/html/
I tried to use imshow to add an image... I works fine and using set_extent method, it is possible to place precisely the image on the map.
However... the image is always displayed as a background.
Then if we use mpl_toolkits.basemap.contourf to plot the topography for example, then the image completely disapear, covered by the upper layers (topo/coastlines/etc).
Some ideas?