Working with CAD Data

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Working with CAD Data In ArcGIS
Travis Wagner
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New Features

• Adds CAD datasets as group layers
• Still have the ability to access all feature
  types properties and symbology
• Better CAD rendering (symbology closely
  represents CAD drawing)
• CAD unique entity values in Categories group in
  the symbology
• Can change and then Restore original CAD
  symbology
• More support for CAD properties
• More fields that give you more information from
  the CAD drawing (layer information, file type,
  file path)

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Georeferencing CAD Datasets2 Point Transformation

• Prior to 9.2 only supported Raster
• 2 Point Transformation (Georeferencing toolbar)
• 2 Source points and 2 Destination points
• Maintains aspect ratio of CAD dataset
• Supports snapping when in edit session
• Creates world file (.wld)
• Text file of two rows of control point
  coordinates
• Must save it in same folder structure and same
  file name prefix
• Save, create new, or load world file
• When you need more than two points use the
  rubbersheet tool
• Can also rotate, scale or shift

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Georeferencing CAD DatasetsRubbersheeting

• Must convert to feature class
• Use Arc Map Spatial Adjustment toolbar
• Can use multiple reference points in this tool
  rather than only two

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• Demo

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CAD Data Translation

• CAD to GIS or GIS to CAD
• Several Way to accomplish this
• Right click on layer and export data
• Copy, paste in an edit session
• Geoprocessing
• Copy features
• Feature Class to Feature Class
• Append to existing datasets and takes on existing
  symbology
• Import from CAD
• Export to CAD (only in ArcGIS Arc Info License
  Level)
• With the use of a Seed File, you can utilize
  properties or symbology of an existing CAD file
• Can export annotation feature class to CAD or
  override point feature class based on a attribute
  for text in a CAD file

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• Demo

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ArcGIS for AutoCAD

• Free download from ESRI as a plug-in for AutoCAD
  2007 adds new menu ArcGIS
• Imports ArcGIS Server Services
• Entire service, data frame or individual
  bookmarks
• Displayed in AutoCAD spatially referenced
• Used for background, digitizing and main
  referencing
• Able to control service on or off by toggle the
  service properties (ESRI_Mapservice)
• Can have a cashed service or keep dynamic via
  properties of service
• Allows you to identify map service features by
  using identify tool
• Keeps layer scale dependencies set up in the
  service (if dynamic)
• Keep connection to service if saved if able to
  keep connection

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• Demo

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