[R] compute variance of every column in a matrix without a loop

[Peter Dalgaard BSA]

Francisco J Molina <FJMolina at lbl.gov> writes:

> Is it possible to compute the variance of every column in a matrix
> without a loop?

apply(m,2,var)

-- 
   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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