[yt-dev] convert_to_cgs

Cameron Hummels chummels at gmail.com
Sun Nov 16 15:16:43 PST 2014


I'm a big fan of what Matt is suggesting.

On Sun, Nov 16, 2014 at 3:57 PM, Ben Thompson <bthompson2090 at gmail.com>
wrote:

> Personally, with the amount of codes (and the different astrophysics
> people are doing with those code). Some sort of config/user-set-defaults
> system would be cool ... Which is what I think you are suggesting? cgs is a
> nice "default go-to".. but it would be cool to have a few settings
> pre-saved (maybe into a JSON file or something).. in which a user can
> provide at anytime.. so that there is no need to add on .in_units(MSun,
> Gyr, Mpc).
>
> Ben.
>
> On Sun, Nov 16, 2014 at 7:08 PM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
>
>> I don't think it will be simple - there are almost certainly places where
>> we assume the underlying representation is CGS. That said, I think it would
>> be possible.
>>
>> Matt, can you write up a YTEP for this first so we have a better idea of
>> your implementation and design ideas?
>>
>> On Sun, Nov 16, 2014 at 10:40 AM John Zuhone <jzuhone at gmail.com> wrote:
>>
>>> I'm assuming that "underneath the hood" everything would still have to
>>> be based on *something* by default, which would be cgs?
>>> On Sun, Nov 16, 2014 at 10:09 AM Matthew Turk <matthewturk at gmail.com>
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> Would it be feasible (I am volunteering to do this if so) to change
>>>> instances of convert_to_cgs to something like convert_to_native, and then
>>>> adding a new set of unit collections?  This would basically mean if we
>>>> wanted units to be in 10^10MSun + Mpc + GYr, it would convert to that,
>>>> rather than cgs.  My naive assumption is that if we had string keys for
>>>> unit collections, this would be simple, and the unit object would simply
>>>> check the string key, get the units, and go.
>>>>
>>>> -Matt
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-- 
Cameron Hummels
Postdoctoral Researcher
Steward Observatory
University of Arizona
http://chummels.org
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