What about:
bb[cbind(1:length(cc),cc)]
Eric
At 17:15 2/04/2003 +1000, [EMAIL PROTECTED] 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 Phone: 61 (2) 9490 8677 Fax: 61 (2) 9490 8921 Mobile: 61 0407 130 635 E-mail: [EMAIL PROTECTED] Web Page: http://www.csiro.au/
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-------------------------------------------------- L'erreur est certes humaine, mais un vrai désastre nécessite un ou deux ordinateurs. Citation anonyme -------------------------------------------------- Eric Lecoutre Informaticien/Statisticien Institut de Statistique / UCL
TEL (+32)(0)10473050 [EMAIL PROTECTED] URL http://www.stat.ucl.ac.be/ISpersonnel/lecoutre --------------------------------------------------
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