I have unevenly spaced data which I would like to arrange in a sparse matrix. The data are in vectors and the individual values therein are numbers with decimals, not integers.
The sparse function would be the ideal function, but it does not work with values that have decimals.
Is there another function to create a sparse matrix with non-integers?
Subject:Sparse matrix from non-integers From:Steven Lord Date: 4 Jun, 2014 14:23:26 Message: 2 of 2
"Florian" <florian_maurerDELETE@yahoo.com> wrote in message
> I have unevenly spaced data which I would like to arrange in a sparse
> matrix. The data are in vectors and the individual values therein are
> numbers with decimals, not integers.
> The sparse function would be the ideal function, but it does not work with
> values that have decimals.
> Is there another function to create a sparse matrix with non-integers?
Both sparse and full matrices can accept noninteger values as the _data_,
but neither can accept noninteger values for the _indices_. If that's what
you're trying to do (store something as the 2.5th element of a variable)
you're probably going to need to use a containers.Map object or perhaps
create a scatteredInterpolant object or something similar.
x = 1:10;
% The data in S and A are noninteger values, but they are located at integer
S = sparse(x, 11-x, sqrt(x+2))
A = full(S)
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