[R] Do we have similar function to Minitab's INDICATOR?

Thomas Lumley thomas at biostat.washington.edu
Fri Dec 22 18:18:14 CET 2000

On Fri, 22 Dec 2000, C. Joseph Lu wrote:

> Dear R-Friends,
> Do we have a similar R function to work like Minitab's INDICATOR?

You can do it with

outer(C2,sort(unique(C2)),function(i,j) as.numeric(i=j))

and model.matrix also does something similar.


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