Adobe Portable Document Format .PDF File Description


Portable Document Format, .PDF, is a file format used for document exchange. PDF is used for representing two-dimensional documents. PDF was created by Adobe Systems.


File Structure

A .PDF. file consists primarily of eight object types.


See PDF Import Options Dialog



Use the File | Export command to export as a PDF (Raster) (*.PDF) file or a PDF (Vector) (*.PDF) file. Alternately, you can use the File | Print command to print to a PDF driver if you have one installed.



When a map with a defined coordinate system is exported to a vector PDF file format, a GeoPDF file is created automatically. When a map with a defined coordinate system is exported to a raster PDF file format, the georeference options for the GeoPDF are changed on the Spatial References page in the Export Options dialog. The Internal file format option must be checked on the Spatial References page to create the GeoPDF.


An add-on, such as TerraGo toolbar, may be needed to view the GeoPDF options in Adobe's Acrobat or PDF Reader programs. The map layer and map must have an assigned coordinate system in Didger prior to the export.


GeoPDF files can be imported in Didger.



Objects that are transparent or partially transparent in Didger are exported with the transparency enabled in the Vector .PDF. The only exception is objects filled with a stock fill pattern. In this case, the object's Foreground opacity and Background opacity are averaged and the object is exported with a single average opacity.



See Also

Adobe Acrobat .PDF Raster Export Options Dialog

Adobe Acrobat .PDF Vector Export Options Dialog

File Format Chart