Visualizing daylight data using matplotlib with radiance

It is possible to output daylight data from radiance using the following command line: 

rtrace [ options ] [ $EVAR ] [ @file ] octree]

Then, using numpy.filetxt() function, you can read the output rsult file for predefined points as an ndArray. After that, it will be easy to plot them either using matplotlib.pcolor() or matplotlib.contourf().
I prefer this method because it gives more flexibility in reading and reporting data. 

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