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    <p>Matt,</p>
    <p>(leaving out a bit your general question) The below looks is an
      error unrelated to whatever resampling method you apply. This is
      completely unfamiliar though. Do you build GDAL yourself ? Did you
      disable threading at build time ? Or maybe you're enabling
      threading with a huge number of threads ? Does that happen all the
      time ?</p>
    <p>Even<br>
    </p>
    <blockquote type="cite"
      cite="mid:197953442ec546178b9c727a316e4dcd@app-exch2.gov.yk.ca">
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        <p class="MsoNormal"><span>Background: I’m getting error
            messages when trying to use some of the methods with 16bit
            imagery and I don’t know if I’m seeing a gdal bug, a data
            bug, or just “you can’t use that method with this raster
            type”.</span></p>
        <p class="MsoNormal"><span> </span></p>
        <p class="MsoNormal"><span>ERROR 1: Failed to acquire WarpMutex
            in WarpRegion().</span></p>
        <p class="MsoNormal"><span> </span></p>
        <p class="MsoNormal"><span>Thanks!</span></p>
        <p class="MsoNormal"><span> </span></p>
        <p class="MsoNormal">
          <b><span lang="EN-US">Matt Wilkie</span></b><span lang="EN-US"></span></p>
        <p class="MsoNormal"><span lang="EN-US">Geomatics Analyst</span></p>
        <p class="MsoNormal"><span lang="EN-US">Environment
            <span>|</span> Technology, Innovation and Mapping</span></p>
        <p class="MsoNormal"><span lang="EN-US">T 867-667-8133
            <span>|</span> </span><u><span><a href="http://yukon.ca/"
                moz-do-not-send="true"><span lang="EN-US">Yukon.ca</span></a></span></u></p>
        <p class="MsoNormal"><i><span>Hours: 08:30-16:30, Tue-Wed:
              Office, Thu-Fri: Remote.</span></i></p>
        <p class="MsoNormal"> </p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
<a class="moz-txt-link-freetext" href="http://www.spatialys.com">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
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