[yt-dev] Data selection issue in yt 3.0

[Nathan Goldbaum]

Thanks for fixing it Matt!  I'm glad it was simple.

With regards to the projection arguments, we've now sort of reversed the problem - PlotWindow plots get created like projections used to.

-Nathan

On Nov 27, 2012, at 2:39 AM, Matthew Turk wrote:

> Hi Nathan,
> 
> On Mon, Nov 26, 2012 at 10:53 PM, Nathan Goldbaum <goldbaum at ucolick.org> wrote:
>> Hi all (specifically Matt, I suspect),
>> 
>> I'm running into an odd issue in yt 3.0.  I'm using the following script:
>> http://paste.yt-project.org/show/2905/.  This refers to a non-axissymmetric
>> dataset I generated with enzo:
>> http://ucolick.org/~goldbaum/files/DD0000.tgz.
>> 
>> The issue is that when I run this script with yt-3.0, I only get back the
>> 'z' projection, even in the cases where I ask it for the 'x' and 'y'
>> projection.
> 
> Yup, it was a typo.  I've fixed it here:
> 
> https://bitbucket.org/yt_analysis/yt-3.0/changeset/df11c944851c229698721513fb2bb2f4b6fb61db
> 
> Thanks for catching this!  It also reminds me that in the Chunking
> YTEP I should mention the fcoords, icoords and fwidth properties of
> chunks.
> 
>> 
>> Since the signature of __init__ for the projection object is slightly
>> different in 3.0, you'll need to manually choose the line in the script that
>> creates the projection object depending on which version of yt you're
>> running.  As a side note, is there a reason for this change in the API?
> 
> The reason was based on outstanding issues in the way that projections
> were different from everything else.  Here's the ticket, filed about a
> year and a half ago, where this got talked about:
> 
> https://bitbucket.org/yt_analysis/yt/issue/292/consistent-projection-arg-order
> 
> At this time I'm no longer certain that changing is the right thing,
> since I believe part of the original motivation was for plot
> collections to match the projection API.
> 
> Thanks for catching the bug; while we do run tests on yt 3.0, it seems
> this slipped through.
> 
> -Matt
> 
>> 
>> Nathan Goldbaum
>> Graduate Student
>> Astronomy & Astrophysics, UCSC
>> goldbaum at ucolick.org
>> http://www.ucolick.org/~goldbaum
>> 
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