Muhammad Azam wrote:
Respected R helpers/ users
I am one of the new R user. I have a problem regarding to know which of the
integer in each column of the following matrix is in majority. I want to know
that integer e.g. in the first column 1 is in majority. Similarly in the third
column 4 is in majority. So what is the suitable way to get the desired integer
for each column. I am looking for some kind reply. Thanks
example:
x=matrix(c(1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,1,2,3,3),ncol=4)
x
[,1] [,2] [,3] [,4]
[1,] 1 2 3 4
[2,] 1 2 4 1
[3,] 1 3 4 2
[4,] 2 3 4 3
[5,] 2 3 4 3
Probably bad but working example:
apply(x, 2, function(x) as.numeric(names(which.max(table(x)))[1]))
Uwe Ligges
best regards
Muhammad Azam
Ph.D. Student
Department of Medical Statistics,
Informatics and Health Economics
University of Innsbruck, Austria
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