[R] vectorize an expression

[Uwe Ligges]

Simon.Gatehouse at csiro.au wrote:
> Dear listers,
> I'm having a bad R day.  I just can't think of the vectorized equivalent of:
> 
> for (ii in 1:n)   aa[ii]  =  bb[ii,cc[ii]]
> 
> Any suggestion received with embarrassment and gratitude


a <- b[cbind(1:n, cc[1:n])]

Uwe Ligges


> Simon Gatehouse                                  
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