[Yt-dev] Density Column calculation

[Matthew Turk]

Hi Stephen,

The distance from start to finish of each ray is scaled to 1.0, so it
requires unit conversion. Usually this means multiplying by the length of
the ray; the healpix examples do this, as does the new offaxis helper. Since
you are projecting the Ones field, and the path length is equal to 1.0, the
field will be 1.0 everywhere.

-Matt
On Oct 9, 2011 2:47 PM, "Stephen Skory" <s at skory.us> wrote:

> Hi Matt,
>
> thanks for the reply! I'm starting to work on this, but I think I'm
> confused. In this transcript:
>
> http://paste.enzotools.org/show/1863/
>
> I'm calculating the column density for the field 'Ones' for two
> different radii (0.2 and 0.4). For both, I get column densities of 1
> everywhere. This doesn't seem right to me - shouldn't a larger radius
> have a larger column density? I'm inclined to believe that I'm wrong,
> so can you help me understand what I'm missing? Thanks!
>
> --
> Stephen Skory
> s at skory.us
> http://stephenskory.com/
> 510.621.3687 (google voice)
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