Tuesday, November 27, 2007

GPS data collection with Trimble TerraSync and the GeoXT

Last class we created a data dictionary to use during our field data collection. Allen Instruments has a great operational instruction document for the GeoXT and TerraSync. It is short and to the point. It should not be used instead of the Trimble TerraSync Operation Guide by it is a great field guide. See the Trimble TerraSync Operation Guide for more in-depth instructions.

Monday, November 5, 2007

Lab Quiz

Wednesday, November 7th, 2007

To successfully complete the lab quiz, you will need to do the following at a minimum.
  1. Create a file-based geodatabase
  2. Import a CAD feature class into the geodatabase
  3. Create a new feature class in the geodatabase
  4. Add and/or delete fields from the above feature classes
  5. Add domains (range and coded valule) to the geodatabase
  6. Apply domains and defaults to the feature class fields
  7. Create features by editing in ArcMap

Subtypes and domains

  • Create a sidewalks feature class. Polygon / import spatial reference from other campus data.
  • Add fields for Width (integer), Material (Integer), and Condition (Text)
  • Add coded value domains to the geodatabase - Width (2,4,6), Material ( 1= Concrete, 2 = Asphault, 3 = Gravel). Condition (Good, Fair, Poor)
  • Apply domains to fields
  • Create subtype for Material - Default concrete
  • Apply default values and domains to subtypes (Concrete- condition = Good, width = 4)(Asphault- condition = Fair, width = 4)(Gravel- condition = Poor, width = 2)
  • Go into ArcMap, add sidewalks and start editing. Notice the functionality subtypes and domains give to the editing process.