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How to input a 294192x294192 array?

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LIN Hongbin
LIN Hongbin on 13 Mar 2016
Edited: Adam on 14 Mar 2016
I want to get a 294192x294192 zero array:M=zeros(294192,294192) However I got error as follows: Requested 294192x294192 (644.8GB) array exceeds maximum array size preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to become unresponsive. See array size limit or preference panel for more information. How to deal with it?Any good way to get this array?Thank you.
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Walter Roberson
Walter Roberson on 13 Mar 2016
That array would require over 644 gigabytes of RAM. How much RAM do you have?

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Accepted Answer

Adam on 13 Mar 2016
Edited: Adam on 14 Mar 2016
Why do you want an array that big? Clearly its size is way bigger than is sensible so even if you could create it what would you do with it?
You probably need to rethink your problem if that is what you need.
If you want most of the array to remain zeros you can use
doc sparse
though if that works for what you want.
  1 Comment
LIN Hongbin
LIN Hongbin on 14 Mar 2016
Thank you,I have tried to rebuild my matrix to aviod this problem.

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