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Tips for using and import CAD Data in ArcGIS

Tips for using and import CAD Data in ArcGIS. Agenda. CAD Data Format DWG, DXF, DGN Using CAD Data as a layer in ArcMap Tools & methods for importing CAD Data Common Problems. CAD Data formats. DXF & DWG = AutoCAD DGN = Microstation Commonly referred to as a Drawing File

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Tips for using and import CAD Data in ArcGIS

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  1. Tips for usingand importCAD Data in ArcGIS

  2. Agenda • CAD Data Format • DWG, DXF, DGN • Using CAD Data as a layer in ArcMap • Tools & methods for importing CAD Data • Common Problems

  3. CAD Data formats • DXF & DWG = AutoCAD • DGN = Microstation • Commonly referred to as a Drawing File • Contains multiple entity types • Also stores graphics (layouts) • Some can store attribute information • Blocks • Object Data (Map & Civil 3D) • Can also reference other CAD files • Indicated by Blue Icons • Edit after converting to geodatabase FC or shapefile

  4. CAD data formats • Contains multiple entity types • Points • Lines • Polygons • Attributes • Text styles • Plot layouts • Projection/Coordinate Systems • References to external files

  5. Layers & Levels • Primary organization structure • Layers = DWG or DXF • Levels = DGN • Users can create an unlimited number of layers • Can contain multiple feature types • User defined attributes • Name • Color • Print • More

  6. On to a demo

  7. ArcGIS CAD to GIS Tools • ArcCatalog • ArcMap

  8. ArcCatalog • Convert to multiple formats • Shapefile • Geodatabase • Simple Data Loader • ArcToolbox • Works in Catalog Window

  9. ArcMap • More flexible than ArcCatalog • Also converts to multiple formats • Can use selections • Copy & Paste • Object Loader • ArcToolbox

  10. On to another demo

  11. ArcToolbox • Can be used from either ArcMap or ArcCatalog • Tools can be used in model or python script

  12. ArcToolbox – FeatureClass to Feature Class Tool • Converts multiple formats to GDB Feature Class or Shapefile • Can select features using expression • Tool accessible multiple methods

  13. Feature Class to Geodatabase • Python Script • Uses FC to FC tool • Multiple FC converted to single GDB

  14. CAD to Geodatabase Tool • Creates new Feature dataset in existing GDB • Converts entire drawing file • Can convert multiple CAD files at one time • Can use PRJ and WLD files

  15. Import CAD Annotation Tool • Converts CAD Annotation to GDB Annotation • Desktop Basic has limited functionality • Can covert CAD Layers to individual feature classes (Standard or Advanced) or merge to single FC • If used in ArcMap, you can use layers as input

  16. Common Problems • Unlimited drawing area for DWG & DXF • New release formats (2013 most current AutoCAD) • Specialty objects (arcs, ellipses, splines) • Data not on correct layer or level • GIS cannot access layout (Paper Space - DWG or DXF) information • Use of Xrefs • Often not georeferenced

  17. Questions & Contact Tripp Corbin, CFM, GISP CEO eGIS Associates, Inc. tcorbin@egisassociates.com 678-710-9710 ext 21 www.egisassociates.com

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