<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Andew,</p>
<p>visually the difference between your image and the one generated
on my PC are almost indistinguishable (no spatial shift at least).
Please submit a PR adding your checksums as alternate accepted
ones. You may just remove the "if sys.platform == 'darwin'" case.
Hopefully adding your checksums should fix the OSX CI too<br>
</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 28/04/2021 à 14:20, Andrew Bell a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CACJ51z3n9mgOLsK16d55E6N31mmU9hbLEKhyp53MQg9qc2d6Vg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Here is the output tif file along with the command
and its terminal output.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Apr 27, 2021 at 3:02
PM Even Rouault <<a
href="mailto:even.rouault@spatialys.com"
moz-do-not-send="true">even.rouault@spatialys.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p><br>
</p>
<div>Le 27/04/2021 à 20:49, Andrew Bell a écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr"><br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Apr 27, 2021
at 2:27 PM Even Rouault <<a
href="mailto:even.rouault@spatialys.com"
target="_blank" moz-do-not-send="true">even.rouault@spatialys.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Andrew,</p>
<p>This could be due to the PROJ version, but as
I'm running with 8.0 too (and one of the CI
config runs PROJ master), I suspect you just
need to install the "conus" grid for NAD27 to
WGS84 transformations into
{proj_prefix}/share/proj . Unpack <a
href="http://download.osgeo.org/proj/proj-datumgrid-1.8.tar.gz"
target="_blank" moz-do-not-send="true">http://download.osgeo.org/proj/proj-datumgrid-1.8.tar.gz</a></p>
</div>
</blockquote>
<div>I have PROJ_NETWORK set to ON. I was under the
impression that this would cause PROJ to find
whatever grids shift files it needed at runtime. Is
there more configuration that's necessary to get
this to happen or do I misunderstand the
PROJ_NETWORK setting?</div>
</div>
</div>
</blockquote>
<p>That should be fine. Actually I was wrong. This test case
doesn't involve any datum shift / grids as it is EPSG:4326
to EPSG:3857 reprojection.<br>
</p>
<p>That might then just be a subtle different rounding issue
in computations in GDAL and/or PROJ, or more likely, due
to using a different JPEG library as this test case
involves JPEG compression. If that was the case, you might
add your checksums as an alternative expected output. We
do that in a number of places.</p>
<p>Looking a few lines before the failure, I actually see
that the CI got that issue and we worked around it with:<br>
</p>
<p> if sys.platform == 'darwin' and
gdal.GetConfigOption('TRAVIS', None) is not None:<br>
assert got_cs != [0, 0, 0]<br>
else:<br>
</p>
<p>Could you run</p>
<p>gdal_translate ../autotest/gdrivers/data/small_world.tif
out.tif -of COG co TILING_SCHEME=GoogleMapsCompatible -co
COMPRESS=JPEG<br>
</p>
<p>and attach the resulting file ?<br>
</p>
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_quote">
<div><br>
</div>
<div>Thanks,</div>
<div> </div>
</div>
-- <br>
<div dir="ltr">Andrew Bell<br>
<a href="mailto:andrew.bell.ia@gmail.com"
target="_blank" moz-do-not-send="true">andrew.bell.ia@gmail.com</a></div>
</div>
</blockquote>
<pre cols="72">--
<a href="http://www.spatialys.com" target="_blank" moz-do-not-send="true">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">Andrew Bell<br>
<a href="mailto:andrew.bell.ia@gmail.com" target="_blank"
moz-do-not-send="true">andrew.bell.ia@gmail.com</a></div>
</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>
</body>
</html>