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rmaxfrequency

How to get max() to return variable names instead of contents of the variables in R?

From the following table, I have a frequency table, and while I am able to find the maximum, I would prefer to have the "name" of the variable instead, so 6 would be the answer, instead of 8.

x <- c(1,3,6,7,2,6,7,8,8,5,1,2,3,9,5,4,1,8,3,4,3,6,8,5,8,7,4,6,6,6,6,6)  

t <- table(x)
## x
## 1 2 3 4 5 6 7 8 9 
## 3 2 4 3 3 8 3 5 1 

max(t)
## [1] 8

I know there is a which.max() function; however, the code I am trying to implement involves an 'n' number of variables, so I will be unable to write out each variable name each time the code is run.

Solution

  • We can use which.max to return the index of the first max value and use that to get the names

    names(which.max(t))

    If there are ties for max value, create a logical vector with ==, get all the position index with which and extract the names

    names(which(t == max(t)))