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Good to hear that selection set performance is improved in arcpy in 10.1. One possible explanation as to why the linked script runs much faster than opening a SearchCursor is that the default option ("OID") looks at the fidset of the layer -- this is probably where the performance improvement is achieved, assuming that is the option you are using.

blah238
– blah238

2011-11-10 01:35:35 +00:00
Commented Nov 10, 2011 at 1:35
@blah238 You are right that OID & fidset are the key to the solution because from Bruce Harold's Python script he says as a comment "Build a list of key field values. In the default case of using the OID field, just grab the FIDSet." Until your comment I'd not twigged to that - thanks!

PolyGeo
– PolyGeo ♦

2011-11-10 22:53:44 +00:00
Commented Nov 10, 2011 at 22:53

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