[R] How to use tapply with more than one variables grouped

[PIKAL Petr]

Hi

and what is wrong?

Petr

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of noobmin
> Sent: Tuesday, October 23, 2012 2:52 PM
> To: r-help at r-project.org
> Subject: Re: [R] How to use tapply with more than one variables grouped
> 
> I used these commands previously:
> 
> data <- read.csv("test.csv")
> > tbl=
> >
> data.frame(tapply(data$contb_receipt_amt,list(data$cand_nm,data$contbr_
> st),sum))
> > tbl
>                 AL  AR  CA  NY
> Doug     250 250 250  NA
> Jennifer  20 340 300 100
> Michele  250 500 250  60
> Obama     15  45 520 600
> 
> 
> 
> --
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> tapply-with-more-than-one-variables-grouped-tp4646948p4647122.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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