[R] Creating panel data

[John Kane]

This looks really ugly but it 'may' do what you want.  I was too lazy to generate enough raw data to check.  Note i changed the names in x as they were a bit clumsy.



 x <- data.frame( id = c(1,2), Event1= c(1,0), YEvent1 =
   c(68.25,0), Event2 = c(0,1), YEvent2 = c(0,68.5))

y   <-   data.frame(   id   =   c(   rep  (1,5),  rep  (2,5)),  Year=c
   (68.0,68.25,68.50,68.75,69.0))
   y $ Event1 <- c (0,1,1,1,1,0,0,0,0,0)
   y $ Event2 <- c (0,0,0,0,0,0,0,1,1,1)


 x <- data.frame( id = c(1,2), Event1= c(1,0), YEvent1 =
   c(68.25,0), Event2 = c(0,1), YEvent2 = c(0,68.5))

dd  <-  melt(x, id= c("id", "Event1", "Event2"),
          value.name="year.quarter" )
dd1  <-  subset(dd, dd[, 5] != 0 )

dd1  <-  dd1[ , c(1,2,3,5)]


John Kane
Kingston ON Canada


> -----Original Message-----
> From: r at jp.pair.com
> Sent: Mon, 23 Jul 2012 11:33:37 -0500
> To: gunter.berton at gene.com
> Subject: Re: [R] Creating panel data
> 
> At 10:38 AM 7/23/2012, you wrote:
> >You might also find it useful to use Hadley Wickham's plyr
> >and/or reshape2 packages, whose aim is to standardize and simplify
> >data manipulation tasks.
>> 
> >Cheers,
> >Bert
> 
> 
> I have already used R enough to have correctly imported the actual
> data. After import, it is in the approximate format at the x
> dataframe I previously posted. I already found the plyr and reshape2
> packages and had assumed that the cast (or dcast) options might be
> the correct ones. Melt seemed to get me only what I already have. The
> examples I have seen thus far start with data in a various formats
> and end up in the format that I am starting with. In other words,
> they seem to do the exact opposite of what I'm trying to do. So I'm
> still stuck with how to get started and whether the functions in
> reshape2 are actually the correct ones to consider.
> 
> ...still looking for some help on this.
> 
> Jeff
> 
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