Re: [R] Reorganize data frame

From: Scott Chamberlain <scttchamberlain4_at_gmail.com>
Date: Wed, 16 Mar 2011 12:23:49 -0500

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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>
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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. Received on Wed 16 Mar 2011 - 20:20:41 GMT

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