I have looked and do not see this answered in any other discussions.

Purpose: Site suitability analysis for brewers spent grain processing facility

Method: Locate intersecting buffers with greatest amount of spent grain - need field to sum barrels based on intersections (ex. Mountain Brewing Co. produces 3,000 barrels a year and Sierra Nevada produces 800,000 barrels a year - if the radii from the two breweries intersects the intersection would have a sum of 803,000 a year)

Using ArcMap 10.1, I have one shapefile that I have a 15 mile radius around each point (brewery). I am trying to identify all intersecting buffers by summing a specific field. I would eventually like for the intersections with the greatest number to be a 3D representation of barrels per year based on the sum field (I don't think I can do this in ArcMap 10.1 but need to transfer everything over to ArcScene, but I'm hoping not).

  • Could you go into more detail about what you have tried and what isn't working for you? This question looks like a homework question and that's generally frowned upon here. If you could provide additional information and what you have done, it may encourage others to help you. – GISKid Aug 5 '14 at 14:35
  • I am doing this for an internship but will turn in as a project for class. I already have a project I can turn in-- create buffers and identified sites at intersections-- but I wanted to make it even better-- it is outside the scope of what is covered in our class. I have tried union buffers, intersect buffers converting buffer polygons to points to do a count. – Amy Aug 5 '14 at 15:02

Here's the approach I would suggest:

  1. Use the Union tool with your buffer feature class as the only input. This will effectively split each polygon at the boundaries of any others.
  2. Run the Find Identical tool on the output from the Union tool, using only SHAPE as the categorization field.
  3. Join the output table from Find Identical back to the Union output's OBJECTID field by IN_FID.
  4. Use the Dissolve tool to dissolve by the joined FEAT_SEQ field (created by Find Identical), adding the sum of your barrel production field as a statistic.

(I wanted to test this out for you, but my ArcGIS installation keeps crashing when I run Find Identical on my test data...)

  • THANK YOU SO MUCH FOR YOUR HELP! I can't believe you were able to do this without testing it in ArcGIS, amazing! – Amy Aug 6 '14 at 3:20

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