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I'm using ArcGis 9.31.
I have a set of points as elevation and in order to get a soft clip area for the TIN, I would like to extract only all the points bording the extent of this shape, or to get a shape deliminating the extent of the set of points. I don't have any other data than this point shape. Is there a way to select them?

Many thanks!

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Possible Duplicate of How do I create a convex hull in ArcGIS? – PolyGeo Feb 13 at 10:51

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It sounds like you are wanting to generate a Convex Hull for which options are described here.

There is also some discussion about generating Concave Hulls and a few tools you may be able to try here.

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