It looks like your "areas" have problems - eg - the loops are not closed, there
are some intersecting area edges, etc. You need to zoom in and pan around the
area edge to check carefully that all the arcs have the right topology.
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__________________________________________________________________
Dr Simon Cox __ L
CSIRO Div. Exploration & Mining ,~' L_|\ Australian
39 Fairway, PO Box 437, ,-' \ Geodynamics
Nedlands, WA 6009, Australia ( \ Cooperative
Phone +61 9 389 8421 X ___ / Research
Fax +61 9 389 1906 L,~' "\__/ Centre
s.cox@dem.csiro.au u
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