<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">Hi Matt,</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">Distance to Nth nearest neighbor output would be fantastic. No rush however, I won’t be able to do much with it until Tuesday at the earliest anyway.</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">Thanks a bunch,</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <div id="bloop_sign_1407529775210381056" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">Amos</div></div> <br><p style="color:#000;">On August 8, 2014 at 4:07:58 PM, Matthew Turk (<a href="mailto:matthewturk@gmail.com">matthewturk@gmail.com</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>
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<div dir="ltr">Hi Amos,
<div><br></div>
<div>(Cool movie! :)</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Aug 8, 2014 at 11:04 AM, Amos
Manneschmidt <span dir="ltr"><<a href="mailto:amannes1@vols.utk.edu" target="_blank">amannes1@vols.utk.edu</a>></span> wrote:<br>
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<div style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
Hello,</div>
<div style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<br></div>
<div style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
I am a student researcher working on the <span style="color:rgb(0,0,0)"><a href="http://chimerasn.org/" target="_blank">Chimera project.</a> Part of my work involves
creating density maps from tracer particles that accurately
represent what we get directly interpolated to the grid from
chimera code. If I can do this I know I can make accurate element
abundance maps for up to 150 species. We are limited by computing
resources to creating maps for only 14 species
directly. </span></div>
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<span style="color:rgb(0,0,0)"><br></span></div>
<div style="margin:0px"><span style="color:rgb(0,0,0);font-family:Helvetica,Arial;font-size:13px">Here
is a </span><a href="https://www.youtube.com/watch?v=WESKqLNi_jg" style="color:rgb(0,0,0);font-family:Helvetica,Arial;font-size:13px" target="_blank"><span style="color:rgb(0,0,0)">video of the best
conservative density plot</span></a> I have been able to come
up with thus far. The smoothing lengths for the tracers are found
in a round-about way right now that is less than ideal. Is there a
way in yt to create smoothing lengths using just particle
coordinates like this? (IE the complex nearest neighbor math I
would rather not code myself if I don’t have to)</div>
</div>
</blockquote>
<div><br></div>
<div>Yes, you can definitely do this -- it requires delving
somewhat into the Cython code. On my todo list is coming up
with an easy way to get back "distance to Nth nearest neighbor."
If that's what you're looking for, it would be pretty
straightforward for me to implement that in the current version.
I can try to do that today and write back to the list, but my
time is somewhat fractured this afternoon. If something more
complex is needed, we can certainly do that. Right now the
way all of the smoothing, FOF-ing, etc etc, happens enables a lot
of different correlations to be plugged in, so we should be able to
find something you're looking for.</div>
<div><br></div>
<div>-Matt </div>
<div> </div>
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Thanks,</div>
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<br></div>
<div style="font-family:helvetica,arial;font-size:13px">Amos
M</div>
</div>
</div>
<br>
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