Multidimensional sparse matrix

[hiramegl]

Hi,

I've just started to use Math.Net and I wonder if is possible to create a multidimensional sparse matrix.
Even a dense matrix would work.

I tried Matrix < Matrix < double > > without success.

Is it possible to create matrices with more than 2 dimensions?

I would also like to operate the multidimensional matrix, like multiplication with a scalar or multiplication with another matrix or vector.

Is it possible to do projections of a matrix?

Thanks for your help beforehand.

/Hiram

[cdrnet]

The matrices in Math.NET Numerics are really only matrices, not n-dimensional arrays. They are fixed to 2 dimensions and cannot be nested.

Unfortunately Math.NET Numerics does not provide any higher dimensional structures like tensors at this point.

[SRamezanH]

Hi,
I use somthing like this:

Matrix<float>[] Sigma;
Sigma = new Matrix<float>[10];
for (int i = 0; i < 10; i++) {
	Sigma[i] = Matrix<float>.Build.Dense(5, 5);
}

and it works well for me.