Question

Can anyone help me with this?

If I run:

> mode(iris$Species)
[1] "numeric"
> mode(iris$Sepal.Width)
[1] "numeric"

Then I get "numeric" as answer

Cheers

M

Answer 1

see ?mode : mode is giving you the storage mode. If you want the value with the maximum count, then use table.

> Sample <- sample(letters[1:5],50,replace=T)
> tmp <- table(Sample)
> tmp
Sample
 a  b  c  d  e 
 9 12  9  7 13 
> tmp[which(tmp==max(tmp))]
 e 
13 

Please, read the help files if a function is not doing what you think it should.

Some extra explanation :

max(tmp) is the maximum of tmp

tmp == max(tmp) gives a logical vector with a length of tmp, indicating whether a value is equal or not to max(tmp).

which(tmp == max(tmp)) returns the index of the values in the vector that are TRUE. These indices you use to select the value in tmp that is the maximum value.

See the help files ?which, ?max and the introductory manuals for R.