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Re: elements of a sparse matrix
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From: |
Jordi Gutiérrez Hermoso |
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Subject: |
Re: elements of a sparse matrix |
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Date: |
Mon, 27 Dec 2010 10:10:24 -0600 |
On 27 December 2010 09:59, Jaana Tommiska <address@hidden> wrote:
> I have a 10000x10000 sparse matrix A that is a result of a
> multiplication of two matrices generated by sprand. If I want to
> find out the element A(10000,10000) and I type A(10000,10000) I get
> memory exhaustedor index type too big..
What's the density of your matrix? What was the exact call to sprand?
I'm noticing that the density matters a lot.
> If I type A(10000*100000) I get say
> (1,1)-> some number.
> Is the number the element that I am intersted in?
Yes, but I'm curious why wouldn't it work otherwise. Can you provide a
reproducible test case?
- Jordi G. H.