Data Sets

A data set (or event source) returns objects that implement the interface hep.analysis.EventSource and return instances of hep.analysis.EventData for each event.   In a special case of EventData, hep.analysis.NTupleEventData, the event data object contains parameters (called fields) for a number of events.

Data sets are used in jobs with analysis routines.  Java Analysis Studio allows users to access data stored on a remote server when in a remote job, and to access data on their own machines when in a local job, using a local data interface module.  See the tutorial for setting up a job for event analysis.

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Page maintained by Jonas Gifford.   Last updated 01/14/04.