[yt-users] calculation of distance in periodic volume

[Matthew Turk]

Hi all,

I think it's worthwhile to reduce the number of points-of-failure we
have in the code.  I think we should remove the light_ray periodic
distance and move to using the math_utils.py one.  My reading is that
that one is better documented, covers a few more potential corner
cases, and I generally prefer we standardize on the one that's global
rather than specific to an individual analysis package.

-Matt

On Tue, Nov 30, 2010 at 10:14 AM, Stephen Skory <stephenskory at yahoo.com> wrote:
> This is hilarious, because there is also one in yt/utilities/math_utils.py. I wonder which one is better? :)
>
>
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> Stephen Skory
> stephenskory at yahoo.com
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>>
>>From: Britton Smith <brittonsmith at gmail.com>
>>To: Discussion of the yt analysis package <yt-users at lists.spacepope.org>
>>Cc:
>>Sent: Tuesday, November 30, 2010 11:05:47 AM
>>Subject: Re: [yt-users] calculation of distance in periodic volume
>>
>>
>>Hi Eric,
>>
>>I wrote some code to do this for the LightRay tool.  In your yt dir, have a look at yt/analysis_modules/light_ray/light_ray.py.  Near the bottom, there is a function called periodic_distance.  That should have what you need.
>>
>>Britton
>>
>>
>>On Tue, Nov 30, 2010 at 12:24 PM, Eric Hallman <hallman13 at gmail.com> wrote:
>>
>>>>Hey,
>>>>>  I am wondering if there is a simple routine in yt for calculating the minimum distance between two points in a periodic volume.  Somehow I wind up writing a new routine for this every time I do it, and it requires a bunch of loops to check which distance is right.  There is bound to be a faster easier way, wondering if anyone knows of one in yt, or has one they use that works fast.
>>>
>>>>>thanks!
>>>
>>>>>Eric Hallman
>>>>>Google Voice: (774) 469-0278
>>>hallman13 at gmail.com
>>>
>>>
>>>
>>>
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