TopoPolygon

Applicability:

• Cadcorp SIS Map Modeller
• Cadcorp SIS Map Editor
• Cadcorp SIS ActiveX Modeller

Ribbon Group:

Topology-Build

Associated commands:

• Node
• Link
• TopoPoint
• TopoLineString

Description:

 TopoPolygon creates TopoPolygon items from a Link and Node item structure.

1. Select TopoPolygon.
   
   
2. Within the Link and Node item network click inside a Polygon to make into a TopoPolygon item.
   
   
3. Either:

• If you do not wish to add further polygons to the TopoPolygon, proceed to step 4. In this case, the position you clicked becomes the seed point of the TopoPolygon.
  

• If you wish the TopoPolygon to include further Polygons adjacent to the first, click within them, one after another. In this case, SIS decides where the seed point will be. The selected polygons which are to form the TopoPolygon are shaded. You can remove a polygon that is already selected by clicking in it again.

4. Press Enter to complete the TopoPolygon.
   
   
5. Repeat steps 2 to 4 to create more TopoPolygons if required.

SIS will create the seed point at the first position you entered.

If you are having trouble forming the TopoPolygon item you want, this could be because the Link items are crossing over each other without Node junctions.

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