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    Howdies Tim,<br>
    Will take a look at that.<br>
    I'm down to about 30 "bad" images which I have just left out of my
    tiling run (takes 10 hours... :-(  )<br>
    <br>
    Cheers for now,<br>
    Zoltan<br>
    <br>
    <div class="moz-cite-prefix">On 2016-09-01 20:38, Tim Sutton wrote:<br>
    </div>
    <blockquote
      cite="mid:D89D7073-2CDB-4879-8135-62B53A40D5B3@kartoza.com"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      Hi
      <div class=""><br class="">
        <div>
          <blockquote type="cite" class="">
            <div class="">On 01 Sep 2016, at 3:55 PM, Zoltan Szecsei
              <<a moz-do-not-send="true"
                href="mailto:zoltans@geograph.co.za" class="">zoltans@geograph.co.za</a>>
              wrote:</div>
            <br class="Apple-interchange-newline">
            <div class="">
              <meta http-equiv="content-type" content="text/html;
                charset=utf-8" class="">
              <div bgcolor="#FFFFFF" text="#000000" class=""> Hi Guys,<br
                  class="">
                I've been struggling to get some 3200 orthos mosaicked
                and tiled.<br class="">
                They are very old and have really bad projection
                definitions, pixel sizes and metadata funnies.<br
                  class="">
                I'm down to the last 261, and have hit a brick wall,
                likely due to my not that great "projection definitions"
                knowledge.<br class="">
                <br class="">
                I get the following error from gdalwarp:<br class="">
                <br class="">
                <blockquote class="">ERROR 6: Unable to load PROJ.4
                  library (libproj.so), creation of<br class="">
                  OGRCoordinateTransformation failed.<br class="">
                </blockquote>
                I have tried various different gdalwarp parameters -
                even leaving gdalwarp to sense in input projection and
                me only specifying the output projection.<br class="">
                If I leave out both s_srs and t_srs then gdalwarp does
                work but obliviously does not reproject to Lo19. <br
                  class="">
                I have even tried feeding the output of this redundant
                gdalwarp into a gdalwarp with t_srs, but no success.<br
                  class="">
                <br class="">
                Specifying only t_srs (as above) on many other orthos on
                Lo17 & Lo21 does work so it is likely that the way
                this projection is embedded in this ortho is the
                problem.<br class="">
                I have tried stripping it out with gdal_edit.py but
                haven't gotten that right yet.<br class="">
                <br class="">
                Anyone with pointers or ideas on this?<br class="">
              </div>
            </div>
          </blockquote>
          <div><br class="">
          </div>
          <div>Have you tried using the corner coordinates and centre to
            georeference the image. I assume the corner & centre
            coordinates reported are correct and in LoXX ? There is an
            example of how to do this in the first reply of this stack
            exchange post:</div>
          <div><br class="">
          </div>
          <div><a moz-do-not-send="true"
href="http://gis.stackexchange.com/questions/38987/how-can-i-add-all-the-4-corners-as-gcp-in-an-image-that-i-want-to-reproject"
              class="">http://gis.stackexchange.com/questions/38987/how-can-i-add-all-the-4-corners-as-gcp-in-an-image-that-i-want-to-reproject</a></div>
          <div><br class="">
          </div>
          <div>Hope that helps!</div>
          <div><br class="">
          </div>
          <div>Regards</div>
          <div><br class="">
          </div>
          <div>Tim</div>
        </div>
        <br class="">
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                        class="Apple-converted-space"> </span>Kartoza</div>
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                          moz-do-not-send="true" href="http://qgis.org"
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                      rgb(0, 0, 0);" class=""><b class="">Skype</b>:
                      timlinux </div>
                    <div style="color: rgb(0, 0, 0); font-family:
                      Helvetica; font-size: 12px; font-style: normal;
                      font-variant-caps: normal; font-weight: normal;
                      letter-spacing: normal; orphans: auto; text-align:
                      center; text-indent: 0px; text-transform: none;
                      white-space: normal; widows: auto; word-spacing:
                      0px; -webkit-text-stroke-width: initial;
                      font-variant-ligatures: normal;
                      font-variant-position: normal;
                      font-variant-numeric: normal;
                      font-variant-alternates: normal;
                      font-variant-east-asian: normal; margin: 0px;
                      line-height: normal; -webkit-text-stroke-color:
                      rgb(0, 0, 0);" class=""><b class="">IRC:</b><span
                        class="Apple-converted-space"> </span>timlinux
                      on #qgis at <a moz-do-not-send="true"
                        href="http://freenode.net" class="">freenode.net</a></div>
                    <div style="color: rgb(0, 0, 0); font-family:
                      Helvetica; font-size: 12px; font-style: normal;
                      font-variant-caps: normal; font-weight: normal;
                      letter-spacing: normal; orphans: auto; text-align:
                      center; text-indent: 0px; text-transform: none;
                      white-space: normal; widows: auto; word-spacing:
                      0px; -webkit-text-stroke-width: initial;
                      font-variant-ligatures: normal;
                      font-variant-position: normal;
                      font-variant-numeric: normal;
                      font-variant-alternates: normal;
                      font-variant-east-asian: normal; margin: 0px;
                      line-height: normal; -webkit-text-stroke-color:
                      rgb(0, 0, 0);" class=""><br class="">
                    </div>
                    <div style="color: rgb(0, 0, 0); font-family:
                      Helvetica; font-size: 12px; font-style: normal;
                      font-variant-caps: normal; font-weight: normal;
                      letter-spacing: normal; orphans: auto; text-align:
                      center; text-indent: 0px; text-transform: none;
                      white-space: normal; widows: auto; word-spacing:
                      0px; -webkit-text-stroke-width: initial;
                      font-variant-ligatures: normal;
                      font-variant-position: normal;
                      font-variant-numeric: normal;
                      font-variant-alternates: normal;
                      font-variant-east-asian: normal; margin: 0px;
                      line-height: normal; -webkit-text-stroke-color:
                      rgb(0, 0, 0);" class="">Kartoza is a merger
                      between Linfiniti and Afrispatial</div>
                  </span></span></span></span></div>
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      <br>
      <pre wrap="">_______________________________________________
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