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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">typo, it should be<br>
EntityHandle interesting_element = *(iter+j);<br>
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<div style="direction: ltr;" id="divRpF745771"><font color="#000000" size="2" face="Tahoma"><b>From:</b> moab-dev-bounces@mcs.anl.gov [moab-dev-bounces@mcs.anl.gov] on behalf of Grindeanu, Iulian R. [iulian@mcs.anl.gov]<br>
<b>Sent:</b> Friday, May 29, 2015 10:21 AM<br>
<b>To:</b> Steve Balderrama; moab-dev@mcs.anl.gov<br>
<b>Subject:</b> Re: [MOAB-dev] MOAB search tag range<br>
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<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">There is no mechanism for that. I assume you are talking about dense tags, not sparse tags.<br>
If sparse tags, you will just have to retrieve one by one the tag values, with tag_get_data(()<br>
<br>
I think the most efficient way is to use tag_iterate over your elements of interest (if dense)<br>
By using tag_iterate, you will access tag values directly in memory, no copying involved<br>
You should return either a range or a standard vector, depending on how broken your output sequence will be<br>
<br>
(so if your output will be hex1-10, hex 101-120, it is better to have a range; if it is hex1, hex 5, hex 11, (very sparse), it is better to output a vector)<br>
<br>
so your code could look like this (look in Interface.hpp comments)<br>
<br>
Range output_range;<br>
<br>
Range::iterator iter = ents.begin();<br>
while (iter != ents.end()) {<br>
int count;<br>
// get contiguous block of tag dat<br>
void* ptr;<br>
err = mb.tag_iterate( tag, iter, ents.end(), count, ptr );<br>
if (err) { ... }<br>
// do something with tag data<br>
// assume your tag is type double <br>
double *dptr = ptr<br>
for (int j=0; j<count; j++, dptr++)<br>
if (*dptr<0.25 && *dptr > 0.75)<br>
{<br>
EntityHandle interesting_element = (*iter+j);<br>
output_range.insert( interesting_element )<br>
<br>
}<br>
// advance to next block of data<br>
iter += count;<br>
}<br>
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<div id="divRpF507983" style="direction:ltr"><font color="#000000" size="2" face="Tahoma"><b>From:</b> moab-dev-bounces@mcs.anl.gov [moab-dev-bounces@mcs.anl.gov] on behalf of Steve Balderrama [sbalderrama@eagle.org]<br>
<b>Sent:</b> Friday, May 29, 2015 9:58 AM<br>
<b>To:</b> moab-dev@mcs.anl.gov<br>
<b>Subject:</b> [MOAB-dev] MOAB search tag range<br>
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<p class="MsoNormal">Is there a direct function in MOAB for searching for a range of tag values, for example, looking for elements with a tag within a numeric range such as > .25 and < .75, or something similar?</p>
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<p class="MsoNormal">If not, what is the most efficient mechanism to do this in MOAB?</p>
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<p class="MsoNormal">Thanks.</p>
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