[R] Transposing by a group variable

From: Shubha Vishwanath Karanth <shubhak_at_ambaresearch.com>
Date: Thu, 14 Feb 2008 19:52:04 +0530


Hi R,  

Can I transpose a data frame by a particular group variable?  

For example:

d=data.frame(group=c(1,1,2,2,2),val=c(6,4,6,3,5))

And my output should be:

data.frame(group=c(1,2),v1=c(6,6),v2=c(4,3),v3=c(NA,5))  

Many thanks,

Shubha

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