I sent the link off-list for the two files mentioned. Thanks for looking into it.
On Thu, Aug 15, 2013 at 10:32 AM, Even Rouault <[email protected] > wrote: > Le jeudi 15 août 2013 16:30:48, Reaves, Timothy a écrit : > > I'm playing with USGS GeoPDF's. It seems the newer ones - for some > reason > > - have 'unknown' for their GEOGCS value. > > > > This is from a file a little over three years old, as output from > gdalinfo: > > Driver: PDF/Geospatial PDF > > Files: OH_Lodi_20100809_TM_geo.pdf > > Size is 13869, 17680 > > Coordinate System is: > > PROJCS["UTM Zone 17, Northern Hemisphere", > > GEOGCS["NAD83", > > DATUM["North_American_Datum_1983", > > ... > > > > This is from a file just a little over a month old, as output from > > gdalinfo: Driver: PDF/Geospatial PDF > > Files: PA_Tionesta_20130621_TM_geo.pdf > > Size is 13652, 17403 > > Coordinate System is: > > PROJCS["UTM Zone 17, Northern Hemisphere", > > GEOGCS["unknown", > > DATUM["North_American_Datum_1983", > > ... > > > > When I do most anything with the later PDF, I receive an error: > > ERROR 1: Couldn't find group for reference to set OFF > > > > For most things, the operation continues successfully. However, I have a > > Python script I am using that will pull out the NEATLINE for cropping > > purposes. It does exist in the metadata, but, the call to gdal.Open() > > returns None, so my program fails on these newer PDF's. > > > > > > I'm sure there is an issue on the USGS side, but, I wouldn't know where > to > > report it. However, I think there is an issue here with gdal as well; > gdal > > correctly converts these files from the command line, so gdal is in fact > > pulling out the correct information. This would seem to me then that the > > call to gdal.Open() should not fail. It may have 'unknown' as the value > > for the metadata key GEOGCS, but, the rest of the metadata should be > > available. > > Could you point me to a URL of such a file so I can inspect ? > > > > > Thanks. > > -- > Geospatial professional services > http://even.rouault.free.fr/services.html >
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