Re: help : how to load only a part of a matrix in octave

[tharaka weheragoda]

I think fopen also load the huge matrix into memory.What i need is to load only a small part because i have only small memory.

You can use fread's size and skip arguments to read parts of a matrix.
So something like this might work:

   f = fopen("what_is_the.mat");
   for i = 1:32
     m = fread(f, [i*1e3, 3.2e4], "double", (i-1)*1e3);
     ## now do whatever you want with m
   endfor

HTH,
- Jordi G. H.