I am trying to reshape a data set. Could someone please help me with the
reshape, cast, and melt functions? I am new to R and I have tried reading
up on how to use the reshape package, but I am very confused. Here is an
example of what I am trying to do:
subject coder score time
[1,] 1 1 20 5
[2,] 1 2 30 4
[3,] 2 3 10 10
[4,] 2 2 5 12
[5,] 3 2 15 NA
[6,] 3 1 NA 13
Reshape to:
subject coder.1 score.1 time.1 coder.2 score.2 time.2
[1,] 1 1 20 5 2 30 4
[2,] 2 3 10 10 2 5 12
[3,] 3 2 15 NA 1 NA 13
Here is the code to setup the original data set that I need to reshape:
subject <- c(1,1,2,2,3,3)
coder <- c(1,2,3,2,2,1)
score <- c(20,30,10,5,15,NA)
time <- c(5,4,10,12,NA,13)
mydata <- cbind(subject,coder,score,time)
Here is where I'm not sure:
library(reshape)
mydata_melt <- melt(mydata, id="subject", na.rm=TRUE)
mydata_cast <- cast(mydata, ???
Any help would be greatly appreciated. Thanks so much!
-Isaac
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