Question

Selecting Boundary

  • 19 February 2018
  • 3 replies
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Hi I would like to know if there's a way to select all the property boundary that do not have public access to the backyard of a house. For example, the properties circled in the screenshot have to be selected because their backyard is directly adjacent to the backyard of the neighbouring house. The properties on the Northwest corner however have a back alley which allow public access therefore won't be part of the desired selection.

Any sort of help would be greatly appreciated. Thanks!


3 replies

Userlevel 5
Badge +25

You could try a SpatialRelator, have it test for Touches and then look at the number of related candidates. 3+ would be what you're looking for although that would not flag the corner properties which, according to your rule, should be included.

Do you have any more data (the back alleys and roads) would be very useful.

Userlevel 2
Badge +16

You could buffer (small margin) the alleys and see what parcels overlap the alleys, using the AreaonAreaOverlayer.

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Sorry, I forgot to add that the road layer we have doesn't cover the back alley in the screenshot here (even though it does for some other area).

 

 

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