require(reshape2)
dcast(stock.returns, Date ~ Ticker)

The numbers were changed from their original values, but if you originally created the values Return as.numeric they should stay the same 
On Wednesday, March 16, 2011 at 9:37 AM, chris99 wrote:
Hi group,
> 
> I am trying to convert the organization of a data frame so I can do some
> correlations between stocks,
> 
> I have something like this:
> 
> stock.returns <-
> data.frame(rbind(c("MSFT","20110301",0.05),c("MSFT","20110302",0.01),c("GOOG","20110301",-0.01),c("GOOG","20110302",0.04)))
> colnames(stock.returns) <- c("Ticker","Date","Return")
> stock.returns
>  Ticker Date Return
> 1 MSFT 20110301 0.05
> 2 MSFT 20110302 0.01
> 3 GOOG 20110301 -0.01
> 4 GOOG 20110302 0.04
> 
> 
> And want to convert it to this:
> 
> stock.returns <-
> data.frame(rbind(c("20110301",0.05,-0.01),c("20110302",0.01,0.04)))
> colnames(stock.returns) <- c("Date","MSFT","GOOG")
> stock.returns
>  Date MSFT GOOG
> 1 20110301 0.05 -0.01
> 2 20110302 0.01 0.04
> 
> 
> Can anyone offer any suggestions?
> 
> Thanks,
> Chris
> 
> --
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> Sent from the R help mailing list archive at Nabble.com.
> 
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