[R] removing for loop

From: <vincent_at_7d4.com>
Date: Tue 04 Jul 2006 - 19:43:19 EST


Dear Rusers,

Trying to reduce my for loops addiction, could somebody tell me if there are ways to simplify
(and perhaps accelerate ?) the following line

for (i in 1:N) for (j in 1:N) m[i,j] = b[i]-b[j];

(where m is a NxN matrix and b a vector of length N)

Thanks for any hint.



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Jul 04 20:56:01 2006

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