R help - Feb 2009 - 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


	[[alternative HTML version deleted]]

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
>
>
>        [[alternative HTML version deleted]]
>
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