Re: [R] Turn categorical array into matrix with dummy variables

?model.matrix On Fri, Jul 27, 2012 at 11:32 AM, xuan zhao wrote: > Hi All, > I want to turn a categorical array (array with factors) into a matrix with > dummy variables. like array=c(a,a,b,b,b) should be turned into: > a b > 1 0 > 1 0 > 0 1 > 0 1 > 0 1 > Do you know any way of doing this? > Tha

[R] Turn categorical array into matrix with dummy variables

Hi All, I want to turn a categorical array (array with factors) into a matrix with dummy variables. like array=c(a,a,b,b,b) should be turned into: a b 1 0 1 0 0 1 0 1 0 1 Do you know any way of doing this? Thanks -- View this message in context: http://r.789695.n4.nabble.com/Turn-categorical-a