Out of memory using cov function

Hi,

I am trying to run the cov function on my matrix (3x154401 double) and I am getting:

??? Out of memory. Type HELP MEMORY for your options.

Error in ==> cov at 95
    xy = (xc' * xc) / m;

I have a 64-bit system and Windows is telling me I have 1706MB of free memory, would increasing the size of my page file help?

Any help much appreciated, Dinyar

[Oleg Komarov]

how long is xc?

[Dinyar]

How can I see that? It is not shown in my variables window...

[Oleg Komarov]

You sure you don't want to to do cov(154401x3). I mean, how many series do you have?

[Dinyar]

Hmm... that could potentially be it. The information was imported from a genereated .mat file. The function does work as cov(154401x3). I will have to test the result on the rest of my code. cheers.

Answer 1

[Walter Roberson]

It might help, but what size is your input matrix?

It is not uncommon for people to ask to take the covariance of matrices that are too large to process in any humanly meaningful amount of memory.

[Dinyar]

The matrix is 3x154401.