http://blog.memming.com/ Nothing Personal, Yet Subjective 2010-01-22T20:50:09-05:00 Textcube 1.7.8 : Con moto (Memming) http://blog.memming.com/entry/sumsumK-vs-o-K-o#comment73546 2010-01-21T15:32:26-05:00

I should have compared against sum(K(:)) as well.....Hmmmm

(Memming) http://blog.memming.com/entry/sumsumK-vs-o-K-o#comment73547 2010-01-22T17:23:52-05:00

>> o = ones(1,size(K,1)); tic; for k = 1:10000; o * K * o'; end; toc Elapsed time is 0.151128 seconds. >> tic; for k = 1:10000; sum(sum(K)); end; toc Elapsed time is 0.257047 seconds. >> tic; for k = 1:10000; sum(K(:)); end; toc Elapsed time is 0.224368 seconds.