Hi,

I use a small script to read the elments of a vtk-file and plot them as 
polygons, 
therefore I create polygons with

    polygon = Polygon(coordinates)

and collect them as patches:

    patches.append(polygon)

afterwards I plot all patches with:

   p = PatchCollection(patches, alpha = 1.0,cmap = mpl.cm.Blues,linewidth="0.0" 
\
          ,edgecolor="black",linewidth="0.0")
   ax.add_collection(p)
   p.set_clim(vmin=0.0,vmax=1.0)
   p.set_array(np.array(patchColor))

My "stupid" idea was to use linewidth = 0.0 to draw patches with no visible 
edges. However,
it does not work, there are allways some lines, sometimes they look like 
artefacts.

Is there some simple solution to draw a patch collection with no edges or to 
set the edgecolor to the
facecolor? I believe that for single polygons the color = XY comand should 
work. 

The second question is if it is possible to fill patches with color gradients 
based on corner values?

Thank you verry much for anny help and suggestions. 
I like matplotlib and I know that it was not developed for the stuff I'm doing,
but I don't like to part with matplotlib since it is such a powerfull tool


Leopold Stadler

(sorry for my broken english, my first mail to an email-list)


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