[yt-users] code units

[Nathan Goldbaum]

On Fri, May 22, 2015 at 7:25 AM, David Collins <dcollins4096 at gmail.com>
wrote:

> Hi, Matt-
>
>
>> It's neither a bug nor a feature; "density" is represented as a
>> "code_mass / code_length**3" primitive.
>>
>
> So what does code_density do?
>

This is supposed to be set to code_mass/code_length**3, but you've actually
spotted an oversight in the way we set up units in the Enzo frontend such
that Enzo units turn out subtly different from units in the other frontends.

I've gone ahead and issued a pull request to fix this:

https://bitbucket.org/yt_analysis/yt/pull-request/1597/delegate-setting-enzo-code-unit-symbols-to/diff


>
> Thanks a bunch!
> d.
>
>
>>
>> -Matt
>>
>> On Fri, May 22, 2015 at 9:20 AM, David Collins <dcollins4096 at gmail.com>
>> wrote:
>> > Hi, Everyone--
>> >
>> > I'm trying to get code units from enzo for a cosmology run, but
>> > in_units('code_density')
>> > seems to do nothing.
>> > 'code_mass/code_length**3'
>> > seems to work.  Is this a bug, or a feature?
>> >
>> >
>> >>>> ad['density'].in_units('code_mass/code_length**3')
>> > YTArray([ 0.9970247 ,  0.99774731,  0.99854185, ...,  0.99993769,
>> >         0.99914176,  0.99841755]) code_mass/code_length**3
>> >>>> ad['density'].in_units('code_density')
>> > YTArray([  1.87321000e-29,   1.87456764e-29,   1.87606042e-29, ...,
>> >          1.87868293e-29,   1.87718755e-29,   1.87582689e-29])
>> code_density
>> >
>> > Thanks!
>> > d.
>> >
>> > --
>> > -- Sent from a computer.
>> >
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>
>
>
> --
> -- Sent from a computer.
>
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