Replacement for bsxfun(@times)?

In my code I have the following data sets:

r = <150902x1 double>
specR = <301x1 double>

Now entering the following commands creates

red = bsxfun(@times, r, specR');
red = <150902x301 double>

This works perfectly for the purposes of my script. However, when I make the r and specR arrays larger, I keep on running into memory errors where Matlab cannot create the massive arrays resulting from the bsxfun. Any suggestions on how to work around this memory error? Perhaps is there another function that I can use instead of bsxfun that only computes one line of the red array at a time? Thank you for your help in advance!

Answer 1

[John D'Errico]

You are trying to generate a LARGE array. Can you be remotely surprised that it blows your memory up? The issue is not with bsxfun, unless you really don't need that large array at all, but just need to compute something small from it.

USE A LOOP. What is the problem?