Hi Daniel,

I don't know of any automatic way of doing this that already exists within yt.  I think an iterative method where you start with a tiny sphere and increment the radius until you get the desired mass will be your best bet.

Cameron

On Wed, Jan 21, 2015 at 3:58 PM, Daniel Fenn <dsfenn@gmail.com> wrote:
Hi everyone,

Is there a straightforward way of creating a spherical data object by specifying the total enclosed mass, rather than the radius?

If not, I supposed I could write an iterative algorithm that would do it, but I'd rather avoid that if there's an easier way provided by yt.

Thanks for your help.

Dan

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--
Cameron Hummels
Postdoctoral Researcher
Steward Observatory
University of Arizona
http://chummels.org