how to create a very large matrix using matlab -


I have a problem with matlab when I am trying to make AA matrix with a large size like 40000x40000.

For example:

x = zeros (4000040000);

The error message has "exceeded the maximum variable size allowed by the program."

There is no solution.

In addition to this I have another question, can we create matrix with matrix like variable column sizes?

40000 * 40000 * 8 bytes per number = 12 GB, of course you will not have enough memory .

To create a huge lot of zeros with the matrix, you need a sparse matrix : 

  m = sparse (40000, 40000)

To create an array of variants, you can use the cell array : 

  M = Room (3, 1) m (1) = [1,2, 3] m (2) = [2,4,6,8,10] m (3) = 6 + 6i

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