Overview

Execute with :
iyt sunrise_script.py 10MpcBox_csf512_a0.300.d MW6_SZ347.a0.300.dat MW6_S347.a0.300.dat 

Note the first file is raw ART output, and the second and third are Ceverino's data
Where iyt is ipython with yt libraries, in /zdata/cemoody/code/yt-unknown/bin/iyt

The sunrise_exporter.py is my flavor of the yt sunrise exporter; it is largely the same as before.