Sep , 2006 v FME Worldwide User Conference - Vancouver Flexible Extraction and Transformation from ArcSDE to AutoCad Ulf Månsson, SWECO Position AB, Sweden

ArcSDE to DWG 2 Flexible extraction and transformation from ArcSDE to AutoCAD  Ulf Månsson

ArcSDE to DWG 3

ArcSDE to DWG 4 3:rd city in Sweden: Malmö 1.Stockholm Gothenburg Malmö

ArcSDE to DWG 5 Wanted: ”A flexible (but understandable) FME-approach to extract data from an existing SDE-database (40-50 tables) to DWG.”

ArcSDE to DWG 6 Background Everything will change :  The contents  The database model  The attributes  The coordinate system

ArcSDE to DWG 7 Defining the Output- Schema Examine existing DWG- files (created with other tools and manually edited)

ArcSDE to DWG 8 Defining the Output- Schema Create a database with all combinations of format attributes  In FME : DWG to MS ACCESS

ArcSDE to DWG 9 Defining the Input- Schema  Examine existing documentation of the database  Create a database with all combinations of format attributes:

ArcSDE to DWG 10 Transforming the Input to the Output We have a database with the input schema and the output schema -How do we define the rules and use them when we have optional attributes and values ? (Like ”wildcard” matching).

ArcSDE to DWG 11 Transforming the Input to the Output Options : a. Manually using testers/valuemappers etc. in a workbench. - Not very flexible ….. b. Use the ”SchemaMapper”. - Honestly, we could not figure this one out….

ArcSDE to DWG 12 Option C  We dynamically create a key- attribute by using the concatenator  So all the SDE-features will get a ”query-like” attribute TELLUS_GDBS.LEDNINGAR_PUNKTOBJEKT?Objekttyp=652&Status=&Kvalitetsursprung=2

ArcSDE to DWG 13  We create a table describing the mapping rules:  Then by using a ”joiner” we set the autocad format attributes. Option C

ArcSDE to DWG 14 Schema - Conclusion  Without changing the workbench the user may select what features should be extracted and how they will be presented in Autocad. This is done by changing the rules in the MS Access database.

ArcSDE to DWG 15 Clipping Data 1.The entire database according to map tiling standards. 2.Selected tiles. 3.User defined areas.

ArcSDE to DWG 16 Clipping Data The clipper and fan-out functions are great ! But: ”It is not always a great idea to read all the rows from 50 big SDE-tables, clipping them by hundreds of tiles and then fan them out in one session…”

ArcSDE to DWG The entire database according to map tiling standards.  A shape-file defines the different tiles.  The workbench is called by arguments:  We use the ArcSDE-querier to extract one tile at the time. Clipping Data

ArcSDE to DWG Selected tiles. (We just leave those lines with tiles we intend to keep.)  A shape-file defines the different tiles.  The workbench is called by arguments:  We use the ArcSDE-querier to extract one tile at the time. Clipping data

ArcSDE to DWG 19 Clipping Data 3. User defined areas. Each user keeps a local folder where they can put any shape-file (s) By calling the workbench by pointing to this folder they can clip with any area. We use the ArcSDE-querier to extract one tile at the time.

ArcSDE to DWG 20 Conclusion  Two FME Workbench files (.FMW)  One Command line file (.BAT)  One MS Access Database (.MDB)  It’s a very flexible combination !