[R] vectorize an expression

[Eric Lecoutre]

What about:

bb[cbind(1:length(cc),cc)]

Eric


At 17:15 2/04/2003 +1000, 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
>
>Simon Gatehouse
>CSIRO Exploration and Mining,
>Newbigin Close off Julius Ave
>North Ryde, NSW
>
>Mail:      PO Box 136, North Ryde
>            NSW 1670, Australia
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>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list
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L'erreur est certes humaine, mais un vrai désastre
nécessite un ou deux ordinateurs. Citation anonyme
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Eric Lecoutre
Informaticien/Statisticien
Institut de Statistique / UCL

TEL (+32)(0)10473050       lecoutre at stat.ucl.ac.be
URL http://www.stat.ucl.ac.be/ISpersonnel/lecoutre
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