[yt-users] Creating a ring

[Stephanie Tonnesen]

Hi yt-users!

I am trying to analyze a cylindrical loop in my dataset.  So what I want to
do is to create two disks:

d1 = ds.disk([0.5, 0.5, 0.5], [0., 0., 1.], (8, 'kpc'), (1, 'kpc'))
d2 = ds.disk([0.5, 0.5, 0.5], [0., 0., 1.], (7, 'kpc'), (1, 'kpc'))

and have r1 be the region containing all the cells in d1 and NOT in d2.  I
feel like there must be an easy way to do this, but can't think of it.
Also, searching the yt-users archive kept coming up with an error.

Thanks in advance!

Stephanie

--
Dr. Stephanie Tonnesen
Alvin E. Nashman Postdoctoral Fellow
Carnegie Observatories, Pasadena, CA
stonnes at gmail.com
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