<div dir="ltr">This is a custom software build, so it's my own making. But you're right, I think I have my projections messed up. Thanks for pointing me in the right direction. Hopefully it'll help me sort it all out.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 11, 2021 at 1:50 PM Even Rouault <<a href="mailto:even.rouault@spatialys.com" target="_blank">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>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>Le 11/05/2021 à 21:36, Brandon Boldenow
      a écrit :<br>
    </div>
    <blockquote type="cite">
      
      <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" target="_blank">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">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">https://pasteboard.co/K1qU2X2.png</a>
                <div><a href="https://pasteboard.co/K1qUkot.png" target="_blank">https://pasteboard.co/K1qUkot.png</a></div>
                <div><a href="https://pasteboard.co/K1qUsAW.png" target="_blank">https://pasteboard.co/K1qUsAW.png</a><br>
                  <div><br>
                  </div>
                  -- <br>
                  <div dir="ltr">
                    <div dir="ltr"><img width="200" height="20"><br>
                    </div>
                  </div>
                </div>
              </div>
              <br>
              <fieldset></fieldset>
              <pre>_______________________________________________
gdal-dev mailing list
<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a>
<a href="https://lists.osgeo.org/mailman/listinfo/gdal-dev" target="_blank">https://lists.osgeo.org/mailman/listinfo/gdal-dev</a>
</pre>
            </blockquote>
            <pre cols="72">-- 
<a href="http://www.spatialys.com" target="_blank">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
          </div>
        </blockquote>
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      <div><br>
      </div>
      -- <br>
      <div dir="ltr">
        <div dir="ltr"><img src="https://docs.google.com/uc?export=download&id=0B3tAVmZ583f8VmM1WE9yQWFuVUE&revid=0B3tAVmZ583f8SWc2L3ZVeGE4VllSZ2ZoZ25jdUNIYUh3dUNRPQ" width="200" height="20"><br>
        </div>
      </div>
    </blockquote>
    <pre cols="72">-- 
<a href="http://www.spatialys.com" target="_blank">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"><div dir="ltr"><img src="https://docs.google.com/uc?export=download&id=0B3tAVmZ583f8VmM1WE9yQWFuVUE&revid=0B3tAVmZ583f8SWc2L3ZVeGE4VllSZ2ZoZ25jdUNIYUh3dUNRPQ" width="200" height="20"><br></div></div>