ccf question
Can someone please verify the interpretation of lag in the ccf function in the ts package. Suppose ccf(x,y). Do negative lags indicate that the events in x precede the events in y and positive lags indicate that events in y precede events in x? Thanks, John ____________________________________ John Sibert, Manager Pelagic Fisheries Research Program University of Hawaii at Manoa 1000 Pope Road, MSB 313 Honolulu, HI 96822 United States Phone: (808) 956-4109 Fax: (808) 956-4104 ____________________________________ Washington DC Phone: (202) 861 2363 Fax: (202) 861 4767 ____________________________________ PFRP Web Site: http://www.soest.hawaii.edu/PFRP/ email: sibert at hawaii.edu