indiana university migrating from autocad to a geodatabase theresa thompson ththomp@indiana edu n.
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Indiana University Migrating from AutoCAD to a Geodatabase Theresa Thompson ththomp@indiana.edu. Total enrollment 2004-05 (7 campuses): 92,070 students 15,831 faculty and staff 714 buildings (7 campuses ) 26,525,251 gross sq. feet of building space 2,963 acres.

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indiana university migrating from autocad to a geodatabase theresa thompson ththomp@indiana edu

Indiana UniversityMigrating from AutoCAD to a GeodatabaseTheresa Thompsonththomp@indiana.edu

slide2

Total enrollment 2004-05 (7 campuses):

92,070students

15,831faculty and staff

714buildings (7 campuses)

26,525,251gross sq. feetof building space

2,963acres

slide3

For the Bloomington campus13 Utility SystemsChilled Water,Condensate, Communications,Electric, Exterior Lighting, Irrigation, Natural Gas, Sewer, Steam, Storm Water, Tunnel, Telephone, WaterBasemap

slide4

IUB Physical Plant

Utilities

Utility Information Group

Watchdogs of the Utility Department

Documentation, GIS/GPS, Locating, and Metering

for the IUB Campus

utility information group
Utility Information Group

Covering Utility Information

for the IUB Campus

Indiana University

why move from autocad map to a sde geodatabase environment
Why move from AutoCAD Mapto a SDE Geodatabase environment?
  • Ease-of-Use for Editors
  • Centralized Database/Graphics Environment
  • Enterprise level data sharing
  • Easier to bring CAD into ArcGIS than GIS into CAD without conversion
iu gis system

IU GIS system

  • Windows based ArcGIS 9.1 – editorsWindows ArcReader 9.1 - viewersUnix ArcSDE/Oracle for geodatabaseUnix ArcIMS for web mappingTesting ArcGIS ServerGeodatabase – IU BloomingtonData Layers = over 58 basemapover 100 utilities
slide14

Data Preparation for moving from AutoCAD Map to a GeodatabaseDatabase model in placecreate a geodatabase and set up boundary polygon for spatial referencedatanaming/object/relationship standards for featuresdomain tables (lookup tables)Clean your CAD and Attribute data before you convertobjects on correct layers / CAD Standardscorrect blocks / object linkingExpect data problems: there is no “perfect conversion”

slide15

Read this!

http://downloads.esri.com/support/whitepapers/ao_/CAD_Translation_in_Geoprocessing_1004_J9324.pdf

slide16

Approaches to converting CADCAD with no data linking but with block attributes– use Direct Read CAD file export into geodatabase (via ArcCatalog / ArcToolbox)CAD linked to database/object data – use AutoCAD Map export to shapefiles or coverage, then load into SDE/OracleCAD annotation – use ArcToolbox \ Conversion Tools \To Geodatabase \ Import CAD AnnotationCAD text or blocks linked to polygons – use ArcToolbox\ CAD Translation \ PolygonsfromCADLinesandPoints

slide17

Simple CAD with no data linking but with block

attributes

Use Direct Read CAD file export into geodatabase (via ArcCatalog)

“The direct read functionality treats the CAD file

as a database of spatial features”

CAD files are rich in attribute data – don’t lose this during conversion

slide21

“Text_” field = blockname

Attribute fields in feature class have new field names

slide24

CAD linked to database/object data – use AutoCAD Map export to shapefiles

or coverage, then load into SDE/Oracle

There are currently no ESRI tools out there

to bring in database linked attributes via object

data or link templates in AutoCAD Map

AutoCAD Map 2006 has direct read capability to SDE/Oracle

slide28

For complex closed polylines you might need to convert to a coverage first, then geodatabase or shapefile

slide33

AutoCAD dwg property attributes and linked database attributes are now part of the converted feature class.

slide36

Create a new personal geodatabase or new feature layers in SDE to import your shapefile data into

slide38

your geodatabase

Here is another chance to change the field names or decide not to bring in some attribute fields

slide40

You can do similar functions several ways...this time you use the Export to Geodatabase command.

slide43

CAD annotation – use ArcToolbox \

Conversion Tools \ to Geodatabase \

Import CAD Annotation

Finally! A great tool for converting AutoCAD

Text into geodatabase annotation.

slide45

You need to explode all mtext for conversion. Set up a selection filter for only mtext, then explode this.

slide48

You need to determine a reference scale. We use 1:5000 for our campus maps based on units of feet.

slide49

This is how the converted CAD annotation looks in the geodatabase annotation feature class

slide50

You will be able to edit geodatabase annotation easily in a ArcGIS edit session with Annotation edit tools

slide51

CAD text or blocks linked to polygons

– use ArcToolbox\ CAD Translation \

PolygonsfromCADLinesandPoints

There are several powerful geoprocessing

tools/scripts in the CAD Translation toolbox.

slide58

Approaches to exporting from GIS to CADSet up a CAD template .dwg(with preinserted blocks, layers, linetypes)Create geodatabase fields for CAD mapping like LAYER, ROTATION, LINETYPE, CADTYPE, REFNAMEFor conversion to CAD – use ArcToolbox \ Conversion Tools \ Export to Geodatabase \ Export to CAD

slide60

Exported from SDE – this CAD file now has mapped blocks and attributes, layers and linetypes automatically from the CAD template file (seed file)

slide61

For mapping geodatabase attributes back to CAD you need to make sure you have fields for CADtype = insert

and the

REFNAME = blockname

slide63

In an ArcGIS edit session – use the Field Calculator to populate the REFNAME with the correct CAD blockname

slide66

Point feature class in SDE is exported to new CAD file and block attributes automatically populated to block inserts.

Note: open up newly created dwg in AutoCAD first, zoom extents and save before viewing in ArcCatalog.