[yt-users] phase plots

Hi all, I would like to make a phase plot that uses co-moving density, rather than proper density, something like this: http://yt.enzotools.org/doc/cookbook/recipes.html#simple-phase do I have to define a new field, or is there a built-in comoving density field (that I can't find)? Thanks! _______________________________________________________ sskory@physics.ucsd.edu o__ Stephen Skory http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student ________________________________(_)_\(_)_______________