[R] How to?
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Thu Aug 24 16:26:05 CEST 2000
"Yves Gauvreau" <cyg at sympatico.ca> writes:
> Is there a way to apply a function to rows or columns of a matrix?
> Now I use apply(as.matrix(1:nrow(m), 1, function(x) mean(m[x,])) which works
> fine but kind of slow on large matrix. I'm sure there is something on this
> somewhere but I can't find it.
Er, how about
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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