[R] reshaping a data frame

[John Kane]

Unless I completely misunderstand what you are doing you don't need to aggregate, just drop the one column and rename things

newtemp  <-  temp_df[, c(1,3)]
names(newtemp) <-  c("names", "w")
newtemp


John Kane
Kingston ON Canada


> -----Original Message-----
> From: abhishek.vit at gmail.com
> Sent: Sun, 9 Jun 2013 23:15:48 -0700
> To: r-help at r-project.org
> Subject: [R] reshaping a data frame
> 
> Hi Guys
> 
> I am trying to cast a data frame but not aggregate the rows for the
> same variable.
> 
> here is a contrived example.
> 
> **input**
> temp_df  <-
> data.frame(names=c('foo','foo','foo'),variable=c('w','w','w'),value=c(34,65,12))
>> temp_df
>   names variable value
> 1   foo        w    34
> 2   foo        w    65
> 3   foo        w    12
> 
> 
> ###########
> **Want this**
> ############
> names  w
> foo         34
> foo         65
> foo         12
> 
> 
> ##
> **getting this***
> ##
>> cast(temp_df)
> Aggregation requires fun.aggregate: length used as default
>   names w
> 1   foo 3
> 
> 
> In real dataset  the categorical column 'variable' will have many more
> categorical variable.
> 
> Thanks!
> -Abhi
> 
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