sapply
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 <g1enn.roberts at btinternet.com> 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
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