Vincent -
I think
apply(y,2,function(x)
cut(x,quantile(x,(0:10)/10),label=FALSE,include.lowest=TRUE))
will give you what you want (although you didn't use set.seed so I
can't verify it against your example.)
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Thu, 6 May 2010, vincent.deluard wrote:
Hi R users,
I have a matrix of data similar to:
y=matrix(rnorm(55),ncol=5)
I would like to know to which decile each number belongs compared to the
numbers in its column.
Say y[1,1] is the third decile among y[1:11,1] and y[2,1] is in the second
decile
I would like get a matrix that would return their ranks in decile, i.e.,
y[1,1] -> 3
y[2,1] -> 2
Your help is much appreciated!
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