[yt-users] Volume Rendering and Weighted Fields

[Sam Skillman]

Hi John,
While probably not the best solution, you could separately project and
derived field of weight*field and just the weight field, then divide out the
weight projection.  I don't think the multivariate TF will help much as of
now, but we should provide a more straightforward method for weighted
"renders".  I only have Internet through my phone right now, but when I have
access i can take a closer look.

Best,
Sam
On Mar 12, 2011 7:24 PM, "John ZuHone" <jzuhone at cfa.harvard.edu> wrote:
> Hi all,
>
> I have figured out how to do an off-axis projection using the camera
interface, it was actually pretty straightforward.
>
> I'm primarily concerned with simulating X-ray images for clusters, and I
would like to extend my process to projections of weighted quantities, say
emission-weighted temperature (or "spectroscopic-like" temperature, which
means weighting by dens*temp**(-alpha)).
>
> I imagine that I have to use MultiVariateTransferFunction for this... does
anyone have a good example of how to do something like this? I've looked at
the source code but the process is still not exactly transparent to me.
>
> Best,
>
> John ZuHone
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