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From: A B on 12 Aug 2010 10:21
Hi,

usually I use sparse2 to create sparse matrices, as it is said to be faster (see Loren's blog).

However I now have a problem where I am repeatedly (few hundred times) creating sparse diagonal matrices and sparse is 2-3x faster than sparse2. spdiags is the slowest solution.

I wondered if there is a rational explanation behind the behavior, so I can understand and use the commands better.

Thanks
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