How to save a variable of a original method to disk

I have large data and managed to put it into .mat file. But 'out of memory' still appears when I call kmeans() method. Is there a way to store all variables in kmeans to disk.

Answer 1

[Jan]

No, storing data on the disk will not help. Working commands need their data in the RAM. Disk swapping helps a little bit, but slows doen the processing massively.

[T]

So the only way is rewriting the command myself now?

Answer 2

[Image Analyst]

Take a subset of your data and throw the rest away. I doubt your kmeans results will change much if you have that much data. If you have 50 million points and run kmeans, then you'll almost certainly come up with the same clusters if you run it on only 1% of those input points.