1

I am trying to calculate cover ratio for each plot in a neighbourhood and thus there are 2 shapefiles, one with parcel and other with building outline.

shapefile image So I want to:

  1. Assign each building a plot according to location. I would need some tolerance option since some buildings slightly overextend plots.
  2. Add up the area of building in a plot.
  3. Divide by plot area.

I am unable to think how to do step one.

I am using ArcInfo, with Spatial Analyst License.

  • 1
    1) Spatial join plots to Buildings using for example 'Have their center in'. 2 you can solve with Intersect or Union and Field Calculator – BERA Apr 19 '18 at 9:34
2

1) Spatial Join Plots to Buildings using for example 'Have their center in'

2) (To have a Shape_Area column your data need to be in a File Geodatabase.):

  1. Intersect Plots and Buildings

  2. Dissolve by Plot ID or Name etc.

  3. For each plot you now have Shape_Area which is the area in each plot covered by Buildings
  4. Join this back to original plots by Plot ID/Name
  5. Calculate a new column using Field Calculator as Shape_Area (from the dissolved features) / Shape_Area
  6. Remove join

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.