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I have a load of polygons that were originally digitised from CAD. These unfortunately include traingles that were used to sybolise the direction the polygon is facing. As can be seen here: enter image description here

The trangles are of uniform shape and size and are too numerous to remove manually, so I am trying to automate a sytem that finds them (based of angle and size?) and clips them off the polygons leaving the unsymbolised polygons. I was planing on either doing this using model builder and FME, but I'm no sure which tools/transformations to use. Has anyone got any experience of doing this, and if so how did they go about it and what tools did they use?


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If they were digitised from CAD it's possible that the data is saved as multi-part polygons, which could then be 'exploded' and allow you to remove the triangles. – MAJ742 Dec 2 '13 at 11:09
Your're right a can't believe I didn't try that! – whatahitson Dec 2 '13 at 11:17
up vote 1 down vote accepted

As I suggested above the solution to this is to edit the polygons and then using the explode multi-part polygon tool separate the triangles from the rest of the feature, select and delete.

enter image description here

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