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CAD-GIS Integration approaches
         with ArcGIS
          Chris North
          ESRI Canada
Key points regarding ESRI’s CAD
support
   ArcGIS CAD data support is core
    technology
    –   ‘Out of the box’
    – ...
CAD data in ArcGIS
   A vector data source that can be visualized,
    queried, analyzed, and converted
   Feature datas...
CAD data model in ArcGIS
CAD data is comprised of:
            Geometry                             Attributes


        A...
CAD datasets in ArcMap
   CAD feature datasets are
    organized into Group
    Layers in ArcMap
   Initially in a colla...
CAD properties as feature
attributes
   Common CAD
    properties
    –   Color, level, linetype,
        handle, line we...
Blocks and Cells
                                               3548
   Typically consist of                   1    B



...
Tags and block attributes
   Values represented as feature attributes
    –   Tags = Fields
    –   Tag values = attribut...
Coordinate Systems and
Projections
   Coordinate Systems
    –   CAD drawings may not initially
        have one defined
...
Georeferencing toolbar
   Georeferencing toolbar – use mouse pointer
    to move layer and create control points in
    m...
World Files
   World Files
    –   File based, two point transformation for CAD data
    –   Uses the .wld file extension...
CAD to Geodatabase Tools
   ArcMap
    –   Export Data
    –   Copy & Paste (Edit
        session)
   ArcToolbox -
    G...
Geodatabase to CAD tool:
Export to CAD
   Output features to
    native CAD format
    –   DGN (V8 only)
    –   DWG/DXF ...
Mapping Specification for DWG
(MSD)
   Open source framework developed by ESRI
    for coding information in DWGs to defi...
Mapping Specification for DWG
(MSD)
   Available in the ArcGIS Online Help system:
    –   http://webhelp.esri.com/arcgis...
Export to CAD: Creating MSD
compliant DWGs
   Automatically generated by Export to CAD
   Organizes CAD entities into fe...
Mapping Specification for DWG:
Export to CAD


                     Output DWG Pre-9.3




 Source
 Geodatabase

         ...
ArcGIS for AutoCAD: Overview
   Provides access to ArcGIS Server map
    services
    –   Control map display
    –   Ide...
ArcGIS for AutoCAD: Capabilities
   Map Services
    –   Georeferenced
    –   Projections on-the-fly
    –   Cartographi...
ArcGIS for AutoCAD + MSD
   Provides ability for
    users to
    –   Read ArcGIS data in CAD systems
    –   Organize an...
MSD Feature Class Tools
   Tools to manage
    feature classes in DWGs
    –   Define, Modify, Delete
   Feature Classes...
MSD Feature Class Tools



           Specify CAD
           properties

New
feature
class
name and
type                  ...
THANKS!

Chris North
cnorth@esricanada.com
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CAD-GIS Integration Approaches with ARCGIS

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CAD-GIS Integration Approaches with ARCGIS by Chris North, Director of Technology, ESRI Canada

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Transcript of "CAD-GIS Integration Approaches with ARCGIS "

  1. 1. CAD-GIS Integration approaches with ArcGIS Chris North ESRI Canada
  2. 2. Key points regarding ESRI’s CAD support  ArcGIS CAD data support is core technology – ‘Out of the box’ – Does NOT require an extension  CAD data can be directly read by ArcGIS – Does NOT require any conversion – Behavior similar to other feature datasets and classes  Available at all license levels  Supported file formats and versions: – AutoCAD DWG/DXF: Release 12 - 2008 – MicroStation DGN: 5.x – V8
  3. 3. CAD data in ArcGIS  A vector data source that can be visualized, queried, analyzed, and converted  Feature datasets that contain several feature classes  Read only data source  Input datasets for most tools  Can serve as reference for data creation – Snapping
  4. 4. CAD data model in ArcGIS CAD data is comprised of: Geometry Attributes ABC CAD entity geometry is represented CAD properties and database links as GIS feature geometry are stored in attribute tables Coordinate World File System/Projection CAD data can be re-projected to CAD drawings can be transformed from overlay with other GIS layers local coordinates to real-world location
  5. 5. CAD datasets in ArcMap  CAD feature datasets are organized into Group Layers in ArcMap  Initially in a collapsed state  CAD feature layer properties can be accessed via the Group Layer Properties dialog
  6. 6. CAD properties as feature attributes  Common CAD properties – Color, level, linetype, handle, line weight, etc…  User defined data – Block attributes – Tags – MS-Links  CAD attributes support queries – Display – Geoprocessing input – Conversion
  7. 7. Blocks and Cells 3548  Typically consist of 1 B multiple Block/Cell entities/elements and Geometry Feature Class different geometries Point  Can contain text and attributes 3548, 1, B Annotation  ArcGIS represents the Polyline insertion point as a point feature Polygon
  8. 8. Tags and block attributes  Values represented as feature attributes – Tags = Fields – Tag values = attributes  DGN: Tag Sets are not an attribute DGN DWG
  9. 9. Coordinate Systems and Projections  Coordinate Systems – CAD drawings may not initially have one defined – Not required - but recommended – Select, create or import from other dataset  Projection files – Stores coordinate system info – Created in ArcCatalog – Can be copied and reused for other CAD files
  10. 10. Georeferencing toolbar  Georeferencing toolbar – use mouse pointer to move layer and create control points in map – Implemented CAD layer support in Georeferencing toolbar – Leverage existing Georeferencing tools and commands for CAD transformations
  11. 11. World Files  World Files – File based, two point transformation for CAD data – Uses the .wld file extension – Simple text file containing two lines with two pairs of coordinate values: <From X1, From Y1> <To X1, To Y1> <From X2, From Y2> <To X2, To Y2> UC2008 Technical Workshop 11
  12. 12. CAD to Geodatabase Tools  ArcMap – Export Data – Copy & Paste (Edit session)  ArcToolbox - Geoprocessing – Copy Features – Feature Class to Feature Class – Feature Class to Geodatabase – Import CAD Annotation
  13. 13. Geodatabase to CAD tool: Export to CAD  Output features to native CAD format – DGN (V8 only) – DWG/DXF (R14 to R2007)  Various levels of complexity – Geometry only – Standardized entities  Preparation tools – Add CAD Fields – Add Field
  14. 14. Mapping Specification for DWG (MSD)  Open source framework developed by ESRI for coding information in DWGs to define: – GIS feature classes + attributes – Coordinate systems  Utilizes CAD data structures to define schema and store data  Leveraged by ArcGIS CAD tools at 9.3 – CAD direct read/import tools – Export to CAD  Provides improved interoperability between CAD and GIS
  15. 15. Mapping Specification for DWG (MSD)  Available in the ArcGIS Online Help system: – http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm? TopicName=CAD_data_organization
  16. 16. Export to CAD: Creating MSD compliant DWGs  Automatically generated by Export to CAD  Organizes CAD entities into feature classes in DWG  Attributes are embedded in CAD entities  Stores coordinate system in DWG  Recognized by ArcGIS Desktop at 9.3
  17. 17. Mapping Specification for DWG: Export to CAD Output DWG Pre-9.3 Source Geodatabase Output DWG @ 9.3
  18. 18. ArcGIS for AutoCAD: Overview  Provides access to ArcGIS Server map services – Control map display – Identify map feature attributes
  19. 19. ArcGIS for AutoCAD: Capabilities  Map Services – Georeferenced – Projections on-the-fly – Cartographic GIS symbology – Dynamic/On Demand display – Scale-dependent display – ArcGIS Server data management – Database access:  IDENTIFY map service features
  20. 20. ArcGIS for AutoCAD + MSD  Provides ability for users to – Read ArcGIS data in CAD systems – Organize and attribute CAD drawings for use in ArcGIS  Solves the question ‘How do I export my feature attributes to a CAD drawing?’
  21. 21. MSD Feature Class Tools  Tools to manage feature classes in DWGs – Define, Modify, Delete  Feature Classes based on queries – Entities properties control feature class participation  Schema definition – Add fields
  22. 22. MSD Feature Class Tools Specify CAD properties New feature class name and type Use property selectors Define schema and default values
  23. 23. THANKS! Chris North cnorth@esricanada.com

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