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<p class="MsoNormal"><span style="font-size:11.0pt">I have been using gdalwarp to convert a geotiff to NetCDF format. The odd thing is that if the result is in feet, I get blank units in my output metadata units. While if I go to meters, I get the correct
units.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">So for example this works correctly:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">gdalwarp -t_srs EPSG:3651 -of netCDF cea.tif cea_m.nc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">and gdalinof shows data like this:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> x#standard_name=projection_x_coordinate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> x#units=m<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#long_name=y coordinate of projection<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#standard_name=projection_y_coordinate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#units=m<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">While this:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">gdalwarp -t_srs EPSG:3652 -of netCDF cea.tif cea_ft.nc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Has this metadata:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> x#standard_name=projection_x_coordinate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> x#units=<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#long_name=y coordinate of projection<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#standard_name=projection_y_coordinate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> y#units=<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The reason that this is an issue is that I’m trying to view this data with a reader that is crashing due to the empty strings. I have reported a bug there, and it is being addressed.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">But, it does seem like there is also an issue with gdalwarp generating these empty strings for netCDF files. Shouldn’t these strings contain “feet”?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I did try to use gdal_edit to try to change that, but didn’t have any luck for the netCDF file.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Any suggestions for how to fix these files? And, how to work around this problem?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">-- Adam<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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