[R] Counting occurrences of a set of values

[Duncan Murdoch]

On 10/09/2015 9:11 AM, Thomas Chesney wrote:
> Can anyone suggest a way of counting how frequently sets of values occurs in a data frame? Like table() only with sets.

Do you want 1,2,1 to be the same as 1,1,2, or different?  What about
1,2,2?  For sets, those are all the same, but for most purposes, they
aren't.  If you really want to keep the ordering, then table() does the
counting you want, it just returns it in an ugly format.

Duncan Murdoch


> 
> So for a dataset:
> 
> V1, V2, V3
> 1, 2, 1
> 1, 3, 2
> 1, 2, 1
> 1, 1, 1
> 
> The output would be something like:
> 
> 1,2,1: 2
> 1,3,2: 1
> 1,1,1: 1
> 
> Thank you,
> 
> Thomas Chesney
> 
> 
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