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Perfect. I'm going to note this issue and if nobody else picks it up while I'm gone (through the weekend), I'll take a stab when I get back.
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<div>Douglas Rudd</div>
<div>Scientific Computing Consultant<br>
Research Computing Center<br>
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<div><a href="mailto:drudd@uchicago.edu">drudd@uchicago.edu</a></div>
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<div>On May 21, 2014, at 5:08 PM, Nathan Goldbaum <<a href="mailto:nathan12343@gmail.com">nathan12343@gmail.com</a>> wrote:</div>
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<div dir="ltr">This issue summarizes the state of things: <a href="https://bitbucket.org/yt_analysis/yt/issue/499/missing-hierarchy-functions">https://bitbucket.org/yt_analysis/yt/issue/499/missing-hierarchy-functions</a>
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<div>I think find_field_value_at_point was the only one we wanted to keep.</div>
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<div class="gmail_quote">On Wed, May 21, 2014 at 3:07 PM, Douglas Harvey Rudd <span dir="ltr">
<<a href="mailto:drudd@uchicago.edu" target="_blank">drudd@uchicago.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">Any possibility of a list of such unimplemented functions somewhere? I'm happy to implement a few things when I find some free time, but I'd need to know what things are needed.
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<div>Douglas Rudd</div>
<div>Scientific Computing Consultant<br>
Research Computing Center<br>
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<div><a href="mailto:drudd@uchicago.edu" target="_blank">drudd@uchicago.edu</a></div>
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<div>On May 21, 2014, at 5:01 PM, Nathan Goldbaum <<a href="mailto:nathan12343@gmail.com" target="_blank">nathan12343@gmail.com</a>> wrote:</div>
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<div dir="ltr">The code is still there, but it is not hooked up to anything. In particular the grid hierarchy object no longer inherits from the ObjectFindingMixin.
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<div>I think It should be possible to implement a generic version of find_field_value_at_point that uses the chunking system. If that's not true, I think different Index subclass (i.e. the GridIndex - which used to be the GridHierarchy - the OctIndex, etc.)
should implement it and then delegate to a method that is attached to the `Dataset` class. For example, the find_min and find_max methods which used to be defined using ObjectFindingMixin are now implemented in a chunk-aware method using derived quantities.</div>
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<div>I think this is totally doable, it's just that no one has actually sat down and done it yet. It would be nice if we could get find_field_value_at_point implemented before the release of yt 3.0 since it's a useful bit of functionality.</div>
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<div>-Nathan</div>
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<div class="gmail_quote">On Wed, May 21, 2014 at 2:48 PM, Douglas Harvey Rudd <span dir="ltr">
<<a href="mailto:drudd@uchicago.edu" target="_blank">drudd@uchicago.edu</a>></span> wrote:<br>
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<div style="word-wrap:break-word">Hi Nathan,
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<div>When you say it's not functional, is it an issue of find_field_value_at_point not being implemented for Oct (or ART oct) geometry?</div>
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<div>Douglas Rudd</div>
<div>Scientific Computing Consultant<br>
Research Computing Center<br>
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<div><a href="mailto:drudd@uchicago.edu" target="_blank">drudd@uchicago.edu</a></div>
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<div>On May 21, 2014, at 2:05 PM, Nathan Goldbaum <<a href="mailto:nathan12343@gmail.com" target="_blank">nathan12343@gmail.com</a>> wrote:</div>
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<div dir="ltr">Hi Alexander,
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<div>You're right, that functionality is currently not functional. The error message could certainly be improved - but basically it is trying to find the attribute find_field_value_at_point attached to the `Dataset` object and is not successful. Also, it's
worth noting that `pf.h` is the same thing as just `pf` in the current version of yt-3.0. `pf.h` exists only for compatibility with legacy scripts and should be avoided in new scripts.</div>
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<div>In yt 2.x, this functionality was provided via the ObjectFindingMixin class, which the GridHierarchy inherited from. Since the algorithm implemented by the find_field_value_at_point only worked for grid datasets, it has been disabled in yt-3.0. I think
the plan is to reimplement it using the new chunking system but no one has done so yet.</div>
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<div>See this issue: <a href="https://bitbucket.org/yt_analysis/yt/issue/499/missing-hierarchy-functions" target="_blank">https://bitbucket.org/yt_analysis/yt/issue/499/missing-hierarchy-functions</a></div>
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<div>Cheers,</div>
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<div>Nathan</div>
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<div class="gmail_quote">On Wed, May 21, 2014 at 11:42 AM, Alexander A. Kaurov <span dir="ltr">
<<a href="mailto:akaurov@gmail.com" target="_blank">akaurov@gmail.com</a>></span> wrote:<br>
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<div dir="ltr">Hi all,<br>
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I'm trying to access field value in a given point in ARTIO file (sample data file: sizmbhloz-clref04SNth-rs9_a0.9011
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). The function '</div>
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find_field_value_at_point
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' seems to be not working. May be I'm using it wrong?</div>
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<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Here is the code:</div>
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from yt.mods import *
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<div><font face="arial, helvetica, sans-serif">pf=load('test-data/sizmbhloz-clref04SNth-rs9_a0.9011/sizmbhloz-clref04SNth-rs9_a0.9011.art')</font><br>
pf.h.
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find_field_value_at_point(('artio', 'HVAR_GAS_DENSITY'),[0.1,0.1,0.1])<br>
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<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">And the error:</div>
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<div>Traceback (most recent call last):<br>
File "<stdin>", line 1, in <module><br>
File "/lustre/kaurov/anaconda/lib/python2.7/site-packages/yt-3.0dev-py2.7-linux-x86_64.egg/yt/data_objects/static_output.py", line 84, in __getattr__<br>
raise AttributeError<br>
AttributeError</div>
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<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Thanks!</div>
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<div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Sasha</div>
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