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<p class="MsoNormal">I seem to be missing some key point in understanding the use of OGR Projections.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The OGR Projections Tutorial (<a href="http://www.gdal.org/osr_tutorial.html">www.gdal.org/osr_tutorial.html</a>) very clearly describes how to set up a new OGRSpatialReference,<o:p></o:p></p>
<p class="MsoNormal">but does not tell how to determine and query the OGRSpatialReference from an existing image data set (e.g. and GeoTiff image).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Could someone please point me to examples/instructions on how to do this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Jim Tilton<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">Dr. James C. Tilton Voice: 301-286-9510<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">NASA Goddard Space Flight Center</span><span style="font-size:10.0pt;font-family:"Courier New"">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy"> FAX: 301-286-1776<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">Mail Code 606.3 E-Mail:
<a href="mailto:James.C.Tilton@nasa.gov"><span style="color:blue">James.C.Tilton@nasa.gov</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">(Computational & Information Sciences and Technology Office)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">Greenbelt, MD 20771</span><span style="font-size:10.0pt;font-family:"Courier New""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">URLs:
<a href="http://science.gsfc.nasa.gov/sed/index.cfm?fuseAction=home.main&&navOrgCode=606">
<span style="color:blue">http://science.gsfc.nasa.gov/sed/index.cfm?fuseAction=home.main&&navOrgCode=606</span></a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:navy">and .
<a href="http://geography.wr.usgs.gov/science/croplands/index.html"><span style="color:blue">http://geography.wr.usgs.gov/science/croplands/index.html</span></a>
<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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