Geospatial registration and coordinate system transformations | Adobe Acrobat

Has anyone successfully registered a pdf map with subsequent display given in meters northing and easting in PSAD56? PSAD56 is a mercator projection with units of meters (like the familiar UTM system). Is it possible to show the correct meters N and E in PSAD56? Has anyone successfully registered a pdf map with subsequent display given in meters northing and easting in PSAD56? PSAD56 is a mercator projection with units of meters (like the familiar UTM system). Is it possible to show the correct meters N and E in PSAD56? The geolocation tool (and hence the geoTIFF automatic interpreter) supports PSAD56, and so the geolocation tool (GLT) can either report in native PSAD (leaving the datum transform box blank when georegistering the map) or transcode to WGS84, which roughly speaking shunts positions by about 250m. You can pick the GLT's display mode from Acrobat's general preferences, and you can even have both WGS and PSAD on display at the same time. I'm still not having success. I come from a GIS background where the PSAD56 coordinate system includes a zone designation. In Acrobat I do not have that option. I'm working in 19 South and northings are positive whereas my Acrobat document reads correct lat-long but shows a negative northing off by 1000000s of meters and eastings off by 100000s of meters. I selected PSAD as the projection and left transform blank as you suggested. I found an older geotiff produced from MapInfo that I imported with correct PSAD 19S coordinates. ??? GeoTIFFs support full zoning on PSAD56, but the pulldown selections in Acrobat are what they are - you can't add or edit entries - so the old geoTIFF is just registering against the offsets Acrobat finds in the file header, but you can't manually register a map with the crosshair tool against a projection that's not on Acrobat's list. The GLT and measure tools can handle any projection you can throw at them, but it's the throwing part which gets tricky - as the geospatial toolset is there for a (careful voice) partner-specific reason, it pretty much assumes that you'll be working on a pre-registered PDF or a geoTIFF rather than pinning the PDF inside Acrobat. Depends on the nature of your map, but if you can't turn it to geoTIFF and import it (vector art, etc), one hack of an option is to create a plain white geoTIFF with the same bounds and projection as your map, convert that to PDF then dump the real map on top as a PDF layer - the tools will see through to the 'fake' map and whatever projection it happens to use. That's also the only way to get a shapefile stack into a PDF without a genuine base map underneath. Thanks for the tips. Unfortunately, I'm using ArcGIS 9.1, which does not make Geotiffs that Acrobat 9 can read, even after installing ESRI patches specific to Geotiffs and rasters. I'm no longer with the company that used MapInfo, which for some reason is able to make a Geotiff that Acobat can read. You could try bouncing the geoTIFF that ArcGIS produces through something else (Quantum, etc.) or use the free listgeo win32-GUI tools program from the geoTIFF project website - http://trac.osgeo.org/geotiff/ - to re-tag the file with a header that Acrobat will accept (listgeo button to drag them out for editing, geotiffcp button to put them back). We use it to re-tag files after editing in Photoshop. You can of course pull the header from the old, working geoTIFF and inspect the differences to see what's not being accepted in the ArcGIS versions - be curious to see a comparison if you could post the header text here. Oof - that explains it then - no projections/datums in the ArcGIS version, which means it's not even halfway to being a valid geoTIFF. Good job you knew the projection as it could have been anything with a header like that. Source.


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Last Modified: May 16, 2016 @ 3:25 am