Saturday, April 19, 2008

GTK ArcGIS Chapter 10 Selecting features by location


When selecting feature by location, there are four types of spatial relationships:
  1. distance
  2. containment
  3. intersection
  4. adjacency

We're scouting to locate a new store in the Riverside, CA area for a chain of gourmet food stores.

  • select neighborhoods(polygons) within 0.5 miles of a freeway(lines)
  • from selected neighborhoods, select those containing shopping centers (points)
  • select census tracts with more than 4000 households and average income over $65000
  • select from subset of neighborhoods, theose with centroid in the upscale census tracts previously selected
  • The Canyon Crest neighborhood has a shopping center (this is our target)
  • query the CCzoning layer using a Definition Query (only features satisfying definition query "zoned commercial"records will be displayed in map while the rest are hidden)
  • zoom in on the one area zonned commercial that also has a shopping center
  • display the buildings footprint layer, which we can query attribute table for a square footage betwen 4000 and 6000 square feet.
You can also join attribute tables by location

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