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从地理信息系统到计算机辅助设计的转换需要模式更改,以便在计算机辅助设计环境中表示相同的特征。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.要保持与CAD文件相同的GIS表示,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
此处使用的数据源于District of North Vancouver.It contains information licensed under the Open Government License - North Vancouver.
FME 2015.1及更新版本中的MicroStation文本样式
MicroStation Text Styles in FME 2015.0 and older
CAD to GIS: Convert Parcel Lines and Text from DGN to Geodatabase
如何将曲线文本从地理数据库转换为MicroStation DGN?
Reading MicroStation (DGN) Tags with FME
Writing Microstation (DGN) Text Nodes with FME
Handling MicroStation (DGN) Dimensions
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