
Hi, 

Look, is simple with reshape:

x <- data frame(...)
reshape( x, idvar = "Subject", direction = "wide", timevar = "Quarter")


Regards, 

Patricia


> Date: Thu, 19 Feb 2009 11:02:58 +0100
> From: pcandolfi@gmail.com
> To: r-help@r-project.org
> Subject: [R] table with 3 varialbes
> 
> I have the initial matrice:
> 
> > *data.frame(Subject=rep(100:101, each=4), Quarter=rep(paste("Q",1:4,
> sep=""),2), Boolean = rep(c("Y","N"),4))*
>   Subject Quarter Boolean
> 1    100      Q1       Y
> 2    100      Q2       N
> 3    100      Q3       Y
> 4    100      Q4       N
> 5    101      Q1       Y
> 6    101      Q2       N
> 7    101      Q3       Y
> 8    101      Q4       N
> ...
> >
> 
> And I would like to group the Subject by Quarter using as a result in the
> table the value of the third variable (Boolean). The final result would
> give:
> 
>   Subjet Q1 Q2 Q3 Q4
> 1    100  Y  Y  Y  Y
> 2    101  N  N  N  N
> ...
> >
> 
> I started using the *table(Subject, Quarter)* but can't find a way to
> correspond the Boolean information in the table....
> Thanks in advance for the ideas...
> 
> Pascal Candolfi
> 
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> 
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