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<p>ok, so the 2 layers are not in the same projection, nor in the
same datum.</p>
<p>You didn't mention which software does the overlay between the 2
layers, and what was the amount of shift you observed.</p>
<p>Software based on recent PROJ versions will typically apply HPGN
grids to do NAD83 to WGS 84 coordinate transformations, when they
are available, but the amount of correction due to those grids
seem to be at most of 1 metre.<br>
</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 11/05/2021 à 21:36, Brandon Boldenow
a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CADJ2HcG_5FHrfu4=ANWuZb_LaEhLHHRPmFV0ORforu9GETmuCw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Sorry for not including this earlier, let me know
if you need anything else:
<div><br>
</div>
<div>Info Geotiff:<br>
<br>
Driver: GTiff/GeoTIFF<br>
Size is 16855, 12232<br>
PROJCS["Lambert Conformal Conic",<br>
GEOGCS["NAD83",<br>
DATUM["North_American_Datum_1983",<br>
SPHEROID["GRS 1980",6378137,298.257222101004,<br>
AUTHORITY["EPSG","7019"]],<br>
AUTHORITY["EPSG","6269"]],<br>
PRIMEM["Greenwich",0],<br>
UNIT["degree",0.0174532925199433,<br>
AUTHORITY["EPSG","9122"]],<br>
AUTHORITY["EPSG","4269"]],<br>
PROJECTION["Lambert_Conformal_Conic_2SP"],<br>
PARAMETER["latitude_of_origin",30.125],<br>
PARAMETER["central_meridian",-100],<br>
PARAMETER["standard_parallel_1",30.6666666666667],<br>
PARAMETER["standard_parallel_2",25.3333333333333],<br>
PARAMETER["false_easting",0],<br>
PARAMETER["false_northing",0],<br>
UNIT["metre",1,<br>
AUTHORITY["EPSG","9001"]],<br>
AXIS["Easting",EAST],<br>
AXIS["Northing",NORTH]]<br>
Origin = (-368445.13723378151, 238489.02048349666)<br>
Pixel Size = (42.3354999959360455, -42.336150730462649)<br>
<br>
Info MrSid:<br>
<br>
Driver: MrSid<br>
Size is: 28000, 28000<br>
PROJCS["WGS 84 / UTM zone 13N",<br>
GEOGCS["WGS 84",<br>
DATUM["WGS_1984",<br>
SPHEROID["WGS 84",6378137,298.257223563,<br>
AUTHORITY["EPSG","7030"]],<br>
AUTHORITY["EPSG","6326"]],<br>
PRIMEM["Greenwich",0],<br>
UNIT["degree",0.0174532925199433],<br>
AUTHORITY["EPSG","4326"]],<br>
PROJECTION["Transverse_Mercator"],<br>
PARAMETER["latitude_of_origin",0],<br>
PARAMETER["central_meridian",-105],<br>
PARAMETER["scale_factor",0.9996],<br>
PARAMETER["false_easting",500000],<br>
PARAMETER["false_northing",0],<br>
UNIT["metre",1,<br>
AUTHORITY["EPSG","9001"]],<br>
AXIS["Easting",EAST],<br>
AXIS["Northing",NORTH],<br>
AUTHORITY["EPSG","32613"]] <br>
Origin = (767738.00007868814, 3336219.99999975129)<br>
Pixel Size = (0.5, -0.5)<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, May 11, 2021 at 12:37
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>Brandon,</p>
<p>The output of gdalinfo on 2 misaligned rasters would be
more telling.</p>
<p>Even<br>
</p>
<div>Le 11/05/2021 à 20:22, Brandon Boldenow a écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Hi All,
<div><br>
</div>
<div>I've been having an issue where VFR Raster
Sectionals (from <a href="http://faa.gov"
target="_blank" moz-do-not-send="true">faa.gov</a>)
and MrSid imagery are misaligned when compared to my
other raster layers.In other software these appear
correctly, so I figure there must be something I'm
doing wrong, but I haven't been able to figure it
out.</div>
<div><br>
</div>
<div>Do you know what could cause this? I've attached
some screenshots with a reference point to show the
misalignment - the black and white satellite imagery
is representative of what I see for most raster
formats.</div>
<div><br>
</div>
<div>Thanks in advance!</div>
</div>
<div><br>
</div>
<a href="https://pasteboard.co/K1qU2X2.png"
target="_blank" moz-do-not-send="true">https://pasteboard.co/K1qU2X2.png</a>
<div><a href="https://pasteboard.co/K1qUkot.png"
target="_blank" moz-do-not-send="true">https://pasteboard.co/K1qUkot.png</a></div>
<div><a href="https://pasteboard.co/K1qUsAW.png"
target="_blank" moz-do-not-send="true">https://pasteboard.co/K1qUsAW.png</a><br>
<div><br>
</div>
-- <br>
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<div dir="ltr"><img moz-do-not-send="true"
width="200" height="20"><br>
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<br>
<fieldset></fieldset>
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</pre>
</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">
<div dir="ltr"><img
src="https://docs.google.com/uc?export=download&id=0B3tAVmZ583f8VmM1WE9yQWFuVUE&revid=0B3tAVmZ583f8SWc2L3ZVeGE4VllSZ2ZoZ25jdUNIYUh3dUNRPQ"
moz-do-not-send="true" width="200" height="20"><br>
</div>
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</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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