I'm not sure what you really want, so perhaps a simple example would help (i.e. what a sample of the input looks like and what the output you need looks like). My guess would be
sapply(df, diff) but again, I'm not sure. --sundar On Sun, Feb 8, 2009 at 4:24 PM, glenn <[email protected]> wrote: > Newbie question sorry (have tried the help pages I promise) > > > > I have a dataframe (date,stockprice) say and looking how I might get the > return of: dataframe (difference in days, change in stock price) using > sapply - I require a very simple function and don't really want to go down > the zoo and quant mod route > > > > Regards > > > > glenn > > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
