Here's some info that might help the development effort for PDF and use of PDF created or georegistered by GDAL.
Something that is confusing is TerraGo Toolbar's behavior with PDF files not created by TerraGo software. The company policy was to not support files with the Toolbar, the reason being the company could not afford to support debugging of files created by other software systems, etc., with a free product. This policy was imperfectly implemented in Toolbar code: sometimes it can be tricked into believing a PDF was created by TerraGo even when it wasn't. Some of the "works sometimes, other times not" behavior can be attributed to this, especially when it comes to ISO encodings which have been supported since 2008. Fortunately, this policy has been abandoned and the next release of the Toolbar will attempt to read any and provide display of coordinates, measurement, etc. Toolbar is due to ship later this month. That will have some rudimentary introspection tools to help figure out why a PDF doesn't seem to work. Some of the issues reported in an earlier thread may be related to the Toolbar "refusing" to display the coordinates and might not any indication that the encoding has been bunged, strings not properly formed, etc. As was noted in the earlier thread and as I've confirmed with some prerelease Toolbar code, the encodings are correct for both samples cited, so good job Even! With the OGC encoding, it's safer to always write the numbers as strings .16g. However, the ISO method does not permit this. The ISO method is less sensitive to the limitations of the PDF real number object type, so the only concern there is precision (PDF reals are ~ 5 significant digits in the fractional part (cf. ISO32000)), which cannot be addressed without modifying the encoding specification and everything that implies. When did gdal_translate pick up the cool macho supremo ability to georegister a PDF? The googles did not help me... I fell off this list a while back, but am back on. LMK if there are other questions. HTH and cheers! George Demmy _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
