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<p>The side effect of using a file where this warning is emitted is
that this COMRAT field which indicates the compression rate will
be set to a invalid value (or probably set to blank. I haven't
checked). Pedantic software or validation procedures might be
unhappy with that. GDAL based software will ignore that field on
reading.<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Le 14/08/2021 à 14:33, Chastain,
Raymond Lee (MU-Student) a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CY4PR01MB2471AD28DEEA88E555C097979FFB9@CY4PR01MB2471.prod.exchangelabs.com">
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Thanks Even that's fantastic,<br>
<br>
Do you know what side-effects if any we can expect due to this?<br>
<br>
We need to know if we should regenerate our imagery before we
deliver it.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
Thanks for your time,<br>
Raymond.<br>
</div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b> Even
Rouault <a class="moz-txt-link-rfc2396E" href="mailto:even.rouault@spatialys.com"><even.rouault@spatialys.com></a><br>
<b>Sent:</b> Saturday, August 14, 2021 7:28 AM<br>
<b>To:</b> Chastain, Raymond Lee (MU-Student)
<a class="moz-txt-link-rfc2396E" href="mailto:rlc5m8@mail.missouri.edu"><rlc5m8@mail.missouri.edu></a>; <a class="moz-txt-link-abbreviated" href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:gdal-dev@lists.osgeo.org"><gdal-dev@lists.osgeo.org></a><br>
<b>Subject:</b> Re: [gdal-dev] GDAL NITF COMRAT issue when
combining SDE_TRE=YES with compressio</font>
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<p>Raymond,</p>
<p>I believe this has been fixed per this commit in master
done a few weeks ago:</p>
<p><a class="x_moz-txt-link-freetext"
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FOSGeo%2Fgdal%2Fcommit%2F0decd82d582015c07bcf22c52cc03bbdda952ce9&data=04%7C01%7C%7Cd81ccff1e3754c4773c208d95f1f01c9%7Ce3fefdbef7e9401ba51a355e01b05a89%7C0%7C0%7C637645409483708058%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=W1d2E0BTJo7Ld5xHIC66uckdF9cxE1pbIwuarPGZ%2BBo%3D&reserved=0"
originalsrc="https://github.com/OSGeo/gdal/commit/0decd82d582015c07bcf22c52cc03bbdda952ce9"
shash="O066dKLihAHmzYbIVXlIJm4kDhTviTnj0OhZT08+OP+6SVOADLYYcs6LD585K3jXCVUKKe/cLN8kybxdnS/gu6+BySy+Z1+aIh2BoG5Is//+7XvWELM2zMM0JZ2qMnWvwQjI4LE2he9uSdZ5jUTFX0bAEtMq5ip7kECg63vl20g="
moz-do-not-send="true">https://github.com/OSGeo/gdal/commit/0decd82d582015c07bcf22c52cc03bbdda952ce9</a></p>
<p>I've just backported it to the 3.3 branch</p>
<p>Even<br>
</p>
<div class="x_moz-cite-prefix">Le 14/08/2021 à 13:22,
Chastain, Raymond Lee (MU-Student) a écrit :<br>
</div>
<blockquote type="cite">
<div><span>When we enable JPEG-2000 compression (or any IC=*
creation option) alongside "SDE_TRE=YES" we get:</span></div>
<div>
<div>"Warning 1: Unable to locate COMRAT to update in NITF
header."</div>
<div><br>
</div>
<div>We require the precision increase provided by
"SDE_TRE=YES" and <span>dropping the IC creation option
<br>
</span></div>
<div><span>explodes the size of our final mosaics by an
order of magnitude.</span> Using either option
separately is fine,
<br>
</div>
<div>however, combining them emits this warning. <span><br>
</span></div>
<div><br>
For context we are taking GeoTIFF mosaics and converting
them to the NITF format when we encounter this.<br>
<span><br>
</span></div>
Thanks,<br>
Raymond.<br>
</div>
<br>
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