[yt-users] HOP overdensity parameter

[Matthew Turk]

Hi Shankar,

> pc.add_slice("Density",0)

Slices are infinitesimally small - the cells are only those cells that
intersect with the slices are returned.  If you want more than that,
you'd want a projection through a thin slab, similar to what Britton
Smith uses in the lightcone generator in yt/extensions.

> I tried help(add_slice) but obviously it doesnot work. Trouble shooting is a little tricky.

help(pc.add_slice) is what you would be looking for, but that
unfortunately does not explicitly say that the slices are
infinitesimally thin.

> Also, is this the correct place to get S2plot...
> http://astronomy.swin.edu.au/s2plot/index.php?title=S2PLOT:Python

Yup

> Any chances of making it part of yt repository?

If you mean making it a part of the yt source repository, I would say
no, there is no chance.  Making it a part of the installation script
is also not terribly likely, because there are some things in the
S2Plot installation that I'm not really comfortable automating.  (And
beyond that, we would have to wait for a relatively permissive open
source license before including it as a dependency.)

That being said, future versions of the installation script may
include VTK, but I'm not ready to commit to that at this time.
Additional methods of volume rendering and 3D plotting are also being
explored.

-Matt