Dear R users,
I have a dataframe like this:
x1<-c(1,2,3,4,NA ,NA ,NA, 3, 1, 1, 1, 1, 2, 2, 3, 4, 4)
x2<-c(2,3,4,3,4,3,4,2,2,3,4,NA,NA,NA,NA,4,3)
x3<-c(1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,1,2)
m<-data.frame(x1,x2,x3)
I would like to create a frequency table like this:
x1 x2 x3
NA
1
2
3
4
where the values in each cell would be the count of the value for that
variable.
How can I do this?
Thanks for the help.
Balázs
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