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I'm trying to speed up a code made of several functions and, when I run the profiler, I see that the function that takes the most time is the following in this part.
n=size(Amat,2);
for k=1:size(Amat,1)
cv(k,1)= copula_Clayton(Amat(k,1:n),alpha_0);
end
Is it possible to eliminate that for loop and make the copula_Clayton func run on every row of the matrix Amat(k,1:n) automatically?
1 个评论
José-Luis
2014-7-22
Two things:
- Pre-allocate cv
- Re-write copula_Clayton to that it takes the whole Amat as input.
Please note that since we have no way of guessing at what copula_Clayton actually does, it is very difficult for us to suggest possible improvements.
回答（1 个）
Azzi Abdelmalek
2014-7-22
编辑：Azzi Abdelmalek
2014-7-22
You can use arrayfun, but you will notice that the for loop is faster.
cv=arrayfun(@(k) copula_Clayton(Amat(k,1:n),alpha_0),(1:size(Amat,1))','un',0);
1 个评论
Giacomo
2014-7-22
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