On Fri, Aug 21, 2015 at 7:11 AM, Markus Haider <markus.haider@uibk.ac.at> wrote:

Hi,

I was trying to calculate the vorticity for a flash dataset. I selected a region using

center = (ad.quantities.min_location('gpot')[2],ad.quantities.min_location('gpot')[3],ad.quantities.min_location('gpot')[4])

LE = center-width.in_units('code_length')/2.

CN = int(width/dx)

Roi = ds.covering_grid(level=level_max,left_edge=LE, dims=[CN,CN,CN])

Then, for this region I wanted to compute the vorticity using

Roi["gas","vorticity_x"]

This resulted in the following error:

http://paste.yt-project.org/show/5824/

Thanks for your help,

Cheers,
Markus
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