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â– Property set data: Property set data attached to an exported object is
exported to a Microsoft
®
Access Database consisting of a series of tables
representing the individual property sets. Each object record within a table
is assigned a unique object key matching the corresponding object key in
the SDF file in order to associate the record in the database with the
appropriate SDF geometry.
â– Blocks and MVBlocks: Blocks and MVBlocks are exported as SDF files and
point databases. Since the blocks and MVBlocks are exported in SDF format
as well, the point databases provide an option for users to use symbols
rather than the SDF geometry to represent Blocks and MVBlocks in
MapGuide. There is a point geometry SDF format, but since AutoCAD
Architecture does not work with geospatial coordinate systems, a table in
an external database presents a better data source for point-related data.
The Publish To MapGuide command does not create bitmap files (BMP)
or Windows Metafiles (WMF) representing the geometry of blocks or
MVBlocks. If you want to generate WMFs, you need to use either the
AutoCAD
®
WmfOut command or the MapGuide SDF Loader.
The SDF Loader is a utility used to create Spatial Data Files (SDF) and their
accompanying Spatial Index Files (SIF) from a variety of GIS data formats.
You can download the SDF Loader utility from http://www.autodesk.com.
â– External references: objects and property set data from external references
are exported as if they actually resided in the host drawing.
NOTE The external reference name prefix of the layer name is removed when
exporting data to MapGuide. This means that objects of the same type that
are on the same layer in separate externally referenced files are placed in the
same SDF files.
Generating a MWX File
The Publish To MapGuide feature creates, in addition to the data types listed
in Published Data Types on page 255, a default map file (MWX file) that
combines the exported data in a MapGuide
®
project. The map contains one
layer for each generated SDF file. Each layer is visible and selectable.
256 | Chapter 5 Interoperability with Other Applications
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