Hi Cynthia,

I know some folks have done this, but I personally have not, or if I have, it's been long enough that I'd have to re-learn the process.  A good place to start would be with a projection of the disk (to get column density) and then applying the various cylindrical velocity fields to compute the epicyclic frequency.  The necessary fields -- given a definition of Q that makes sense for your particular setup -- should be in place in yt as default plugins.

On Sun, Feb 14, 2021 at 6:57 AM Cynthia Saad <saad.cynthia@live.com> wrote:
Dear all,
Did anyone calculate and plot the toomre criterion of a disk from an enzo dataset?
Any tips on how to do that?
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