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Date:         Fri, 23 Mar 2012 14:34:28 -0700
Reply-To:     David Marso <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         David Marso <>
Subject:      Re: conditional compute within a macro
In-Reply-To:  <>
Content-Type: text/plain; charset=us-ascii

You might want to look at the CCF procedure --- *CCF* *Overview* *CCF * displays and plots the cross-correlation functions of two or more time series. You can also display and plot the cross-correlations of transformed series by requesting natural log and differencing transformations within the procedure. *Options* *Modifying the Series*. You can request a natural log transformation of the series using the LN subcommand and seasonal and nonseasonal differencing to any degree using the SDIFF and DIFF subcommands. With seasonal differencing, you can also specify the periodicity on the PERIOD subcommand. *Statistical Display.* You can control which series are paired by using the keyword WITH. You can specify the range of lags for which you want values displayed and plotted with the MXCROSS subcommand, overriding the maximum specified on TSET. You can also display and plot values at periodic lags only using the SEASONAL subcommand. .............

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