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secondo/bin/tmp/Optics.examples

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2026-01-23 17:03:45 +08:00
Database: berlintest
Restore : No
Operator : extractDbScan
Number : 1
Signature: stream(tuple) x real -> stream(tuple)
Example : query Kneipen feed extend[B : bbox(.GeoData)] opticsR[B, 2000.0, 10] extractDbScan[500.0] filter[.Cid>=0] sortby[Cid] groupby[Cid; C : group count] count
Result : 4
Operator : opticsF
Number : 1
Signature: stream(tuple) x IDENT x real x int x fun -> stream(tuple)
Example : query (plz feed opticsF[PLZ, 10.0, 5, abs(. - ..) ] count ) = (plz count)
Result : TRUE
Operator : opticsTF
Number : 1
Signature: stream(tuple) x real x int x fun -> stream(tuple)
Example : query (Kneipen feed opticsTF[500.0, 5, distance(.GeoData, ..GeoData)] count) = (Kneipen count)
Result : TRUE
Operator : opticsM
Number : 1
Signature: stream(tuple) x IDENT x real x int (x geoid) -> stream(tuple)
Example : query Kneipen feed opticsM[Name, 10.0, 5] count
Result : 284
Operator : opticsR
Number : 1
Signature: stream(tuple) x IDENT x real x int -> stream(tuple)
Example : query Kneipen feed extend[B : bbox(.GeoData)]opticsR[B, 1000.0, 5] count
Result : 284