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A GIS to CAD transformation requires schema changes so that the same features can be represented in a CAD environment.As GIS data has a specific data structure of features and attributes whereas a CAD files stores features as complex geometries with symbology and attributes as text.To maintain the same GIS representation as a CAD file, attributes are transformed into annotations and symbology.In addition to extracting the data to create an accurate representation, defining the content and style of the CAD objects is necessary.
This article provides an overview of some of the typical tasks performed in a GIS to CAD transformation.
The source file geodatabase, "NorthVancouver.gdb", is read using the Esri Geodatabase (File Geodb Open API) reader.
Esri File Geodatabase Viewed with Data Inspector
Each of the three feature types undergoes a number of similar transformations to produce text features from attribute values.Once text features have been created, each are styled and attributes are added by the same process.
The process to style and create DGN features from Geodatabase attributes and features for each of the three features types are the same.
A MicroStation DGN file with 6 levels: 3 text levels, 2 polygon levels and 1 line level
Output MicroStation DGN File
The data used here originates from open data made available by theDistrict of North Vancouver.It contains information licensed under the Open Government License - North Vancouver.
CAD to GIS: Convert Parcel Lines and Text from DGN to Geodatabase
MicroStation Text Styles in FME 2015.1 and newer
How do I convert curved text from Geodatabase to Microstation DGN?
Reading MicroStation (DGN) Tags with FME
Writing Microstation (DGN) Text Nodes with FME
MicroStation Text Styles in FME 2015.0 and older
Reading Basic Geodatabase Annotation - GDB to DGN
Handling MicroStation (DGN) Dimensions
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