FME Transformers: 2024.1



Spatial Analysis


Cuts holes in surface features with other surface features. A surface that is cut by another surface must be co-planar with that second surface, and contain that second surface.

All surfaces are converted into faces (for example, a mesh is converted into faces – one face per mesh part).


The example below illustrates the input features on the left and the output features on the right. The input consists of surface features that are coplanar. The output consists of features with cut holes wherever the surface features were contained within or intersected other surface features.

Usage Notes

  • To build a TIN (triangulated irregular network) surface from points, lines, and/or rasters, see the TINGenerator and SurfaceModeller.


Input Ports

Output Ports


Editing Transformer Parameters

Transformer parameters can be set by directly entering values, using expressions, or referencing other elements in the workspace such as attribute values or user parameters. Various editors and context menus are available to assist. To see what is available, click beside the applicable parameter.

For more information, see Transformer Parameter Menu Options.

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