Licensing options for this format begin with FME Professional Edition.
Note: To use the SDF Reader/Writer, you must install Autodesk® MapGuide®.
The toolkit is free and available from:
http://knowledge.autodesk.com/search-result/caas/downloads/content/mapguide-65-service-pack-1.html
The Autodesk MapGuide SDF Reader/Writer allows FME to read and write Autodesk MapGuide binary SDF files. The SDF file format is a binary format used with Autodesk’s MapGuide and other World Wide Web map authoring tools.
Overview
SDF data is two-dimensional (2D), and SDF files store both geometry and attributions. A logical SDF dataset consists of one or more files in the same folder with the extension .sdf – this extension is added to the basename of the SDF files. Each .sdf file is also paired with its spatial index file, which has the extension .sif. The paired .sif file is required in order to use its .sdf file for processing. An optional key index file (.kif) may also be created and is used by MapGuide to speed access to the file.
The SDF reader and writer support the storage of point, line, and polygon geometric data in .sdf files. Output files contain only one geometry type to conform with MapGuide. The SDF format can also store features with no geometry (which are referred to as having a geometry of none).