[S] Intervention analysis

Wim Kimmerer (kimmerer@sfsu.edu)
Tue, 14 Jul 1998 09:42:17 -0700


I have a time series with autocorrelation and an apparent step (this is
fishery data from the Pacific, and yes the step seems to be in about 1977).
Assessing the step (timing, magnitude, significance) seems to call for
intervention analysis. I have searched the Help files (v. 3.3) and the
archive in vain. Can somebody please tell me how to do intervention
analysis in SPlus?

Thanks
Wim Kimmerer
Romberg Tiburon Center
San Francisco State University
PO Box 855
Tiburon CA 94920
Ph. (415) 338-3515
Fax (415) 435-7120
http://userwww.sfsu.edu/~kimmerer/

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