[R] How to retrieve data from a matrix

[arun]

HI,
Try this:
dat1<-read.csv("matrixGinger.csv",sep="\t")
res<-apply(dat1,1,function(x) names(x)[x<0.0165])
res1<-t(sapply(res,`[`,seq(max(sapply(res,length)))))
res2<-data.frame(id=rownames(res1),res1)
dat2<-read.csv("Gingerdat.csv",sep="\t")
 res3<-merge(dat2,res2,by="id",sort=FALSE))
 res3[1:5,1:5]
#      id status    X1     X2      X3
#1 109530      0 X1537 X32255 X103309
#2 109398      0 X1537 X32255 X103309
#3 109494      0 X1537 X32255 X103309
#4 110077      0 X1537 X32255 X103309
#5 109601      0 X1537 X32255 X103309
A.K.




----- Original Message -----
From: ginger <biino at igm.cnr.it>
To: r-help at r-project.org
Cc: 
Sent: Friday, November 16, 2012 6:27 AM
Subject: [R] How to retrieve data from a matrix

I have a data set (data.txt) containing information on affection status
(1=affected; 0=not affected) for some subjects identified by an ID. Then I
have a sort of correlation matrix of the same subjects (matrix.txt). For
each affected subject in the data set I have to retrieve the IDs of
unaffected subjects from the matrix (if the condition “affected-unaffected
correlation<0.0165” is satisfied) and such IDs should  be placed in new
columns of the data set on the affected subject corresponding row.
Does anybody can help me?
data.txt <http://r.789695.n4.nabble.com/file/n4649721/data.txt>   matrix.txt
<http://r.789695.n4.nabble.com/file/n4649721/matrix.txt>  



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