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stockpile
2009 Feb 09
1
sapply
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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