compare loops and matrix computation.

Hi, all,

I recently found that Matlab executes matrix/vector computation pretty fast than scalar computation with loops. For example, if I used loops to execute algorithm, it is very slow. If I convert it to vector or matrix, it is faster.

I was told about this fact before, is there any explanation on it?

The bad thing is that you cannot always use matrix to replace loops...

Thanks.

Answer 1

[Jonathan Sullivan]

This has some good information on the topic:

http://www.mathworks.com/help/matlab/matlab_prog/vectorization.html

[C Zeng]

Thanks, Jonathan!