Re: [R] Convert dataframe with two factors from wide to long format

Just learned another trick today. Thanks a lot to both of you for the kind help! Gang On Sun, May 22, 2011 at 6:04 PM, Dennis Murphy wrote: > Hi: > > library(reshape2) > d1 <- melt(d, id = 'Subj') > d1 <- cbind(d1, colsplit(d1$variable, '_', c('Time', 'Cond'))) > d1 <- transform(d1, >

Re: [R] Convert dataframe with two factors from wide to long format

Hi: library(reshape2) d1 <- melt(d, id = 'Subj') d1 <- cbind(d1, colsplit(d1$variable, '_', c('Time', 'Cond'))) d1 <- transform(d1, Time = substr(Time, 2, 2), Cond = substr(Cond, 5, 5))[c(1, 4, 5, 3)] str(d1) d1 You can decide whether to leave Time and Cond as char

Re: [R] Convert dataframe with two factors from wide to long format

On May 22, 2011, at 5:25 PM, Gang Chen wrote: I know how to convert a simple dataframe from wide to long format with one varying factor. However, for a dataset with two factors like the following, Subj T1_Cond1 T1_Cond2 T2_Cond1 T2_Cond2 1 0.125869 4.108232 1.099392 5.556614 2 1.

[R] Convert dataframe with two factors from wide to long format

I know how to convert a simple dataframe from wide to long format with one varying factor. However, for a dataset with two factors like the following, Subj T1_Cond1 T1_Cond2 T2_Cond1 T2_Cond2 1 0.125869 4.108232 1.099392 5.556614 2 1.427940 2.170026 0.120748 1.176353 How to eleg