[R] Data Restructuring Question

[stephen sefick]

look at package reshape there is a cool little function input that
once you get the hang of is handy.

On Mon, Mar 9, 2009 at 5:50 PM, Jason Rupert <jasonkrupert at yahoo.com> wrote:
> I think I am overlooking a call or concept in R to help me easily and quickly restructure my data.frame:
>
> Sometimes the data I receive looks like:
> VariableName, Run1, Run2, Run3, Location
> temp,               15.0,  16.0,  17.0, There
>
> And other times it looks like:
> VariableName, Run, Location
> temp,               17.0, There
>
> I would like to use the header information in order to be able to restructure the first data set to have a similar look as the second, i.e.
>
> VariableName, Run, Location,
> temp,               15.0,  There # Really Run1
> temp,               16.0,  There # Really Run2
> temp,               17.0,  There # Really Run3
>
> Right now I am manually recombining:
> tmp_1<-data.frame(data$VariableName, data$ Run1, data$Location)
> tmp_2<-data.frame(data$VariableName, data$ Run2, data$Location)
> tmp_3<-data.frame(data$VariableName, data$ Run3, data$Location)
>
> combine_1<-rbind(tmp_1, tmp_2)
> combine_1<-rbind(combine_1, tmp_3)
>
> Is there an easier way that is more flexible?  I would like to make it flexible enough to handle the case where I have two or four runs.
>
> Thank you for any feedback.
>
>
>
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>
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-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis