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Category: Geometric Operations Kind: Operation Description: Returns the difference of two geometries

Inputs

Name Abbreviation Type Access Description
A A Cartesian Item The geometry to subtract from
B B Cartesian List The geometry to subtract

Outputs

Name Abbreviation Type Access Description
Result R Cartesian Item The difference

How to

  1. Start with a geometry you want to subtract from

    You can use read feature to get the original flow feature, or the results of any other geometric operation.

    If you want to subtract from geometries in Lists, use a map to cut from each geometry.

  2. Feed in the geometry you want to subtract.

    This can be Lists of multiple features!

  3. The result is the original geometry with the area of the “B” geometries removed.

Use case

Create a parking solver that generates parking bays around overlapping buildings

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  1. Draw a feature and apply the Carpark usage.

  2. Draw another feature using a Building Section usage (this example uses Retail)

  3. Add the carpark transform to the Carpark geometry

    Click the geometry

    Open the Flow Builder and select Flow 2.0

    Click “Parking Bays”

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  4. Add the Boolean Difference node between Read Feature and Parking Lots

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