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Compare two different geometry datasets

  • May 14, 2019
  • 3 replies
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D

Hi guys,

 

 

A newbie here! I have the following question/problem:

 

 

I have to geometries sources, I have a geojson file with a specific geometry (this is an house with 4 corners, 5 coordinates), the second dataset is a city dataset that contains land parcels. The challenge is now to compare the two sources and become as outcome the affected land parcels, with affected land parcels I mean those parcels where the house is placed/located.

In the first picture you can see what i did so far, i parsed the geojson file and I extracted a geometry, in the second source i extracted the land parcels geometries and adapted the coordinate system (LL84). In the second and third picture you can see both the graphics, so it works very well. Now i should "only" compare the geometries and get the affected land parcels.

 

 

Thank you in advance for your help!

 

 

 

Best answer by fmelizard

Hi @dummknopf You can also use a SpatialFilter or SpatialRelator to identify which parcels have points or polygons that intersect, overlap, or are contained within.

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3 replies

erik_jan
Contributor
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  • erik_janContributor
  • Contributor
  • 2179 replies
  • May 14, 2019

Assuming the house is in one parcel I would do the following:

Replace the house geometry by a center point (CenterpointReplacer).

Find the Parcel in which the center point is (PointonAreaOverlayer), followed by a Tester on the Area output (test for _overlaps > 0).

Hope this helps.

fmelizard
Safer
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  • fmelizardSafer
  • Safer
  • 3719 replies
  • Best Answer
  • May 14, 2019

Hi @dummknopf You can also use a SpatialFilter or SpatialRelator to identify which parcels have points or polygons that intersect, overlap, or are contained within.

D
  • dummknopf
  • Author
  • 1 reply
  • May 21, 2019

Hi @dummknopf You can also use a SpatialFilter or SpatialRelator to identify which parcels have points or polygons that intersect, overlap, or are contained within.

Thank you very much @danatsafe! I adopted your approach and it works like a charm!

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