[R] R - MATLAB apply like function

Hans W. Borchers hwborchers at gmail.com
Wed Mar 4 10:06:30 CET 2009

ARDIA David <david.ardia <at> unifr.ch> writes:

> Dear all,
> I very often use the R function "apply", for speedup purposes. I am now also 
> using MATLAB, and would like to use the same kind of function.
> I have already asked MATLAB people, and the answer is : "vectorize"... but of 
> course, this is not always possible. So, instead of using a FOR loop all the 
> time, I tried using the bsxfun. 

The only other Matlab functions I can come up with of are 'arrayfun',
'structfun', and 'cellfun'. For instance,

  arrayfun(@(x)isequal(x.f1, x.f2), S)

applies an anonymous function to a structure array.

But think of it, loops in Matlab are much faster than in R -- especially since
version 2008a --, so the need for avoiding them is not as big.

Regards,  Hans Werner

> So you R people, who might also use MATLAB, do you have any solution? Are you 
> also nervous about this fact (maybe also because of this R-MATLAB question).
> Thanks for your help,
> Dave 
> 	[[alternative HTML version deleted]]
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