| Re: [eigen] Performing colwise norm() and squaredNorm() |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Performing colwise norm() and squaredNorm()
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Sat, 22 May 2010 19:17:03 -0400
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This should compile. I confirm it errors out. This is a bug. Can you
please file a bug so we don't forget about it.
Indeed, squaredNorm() should return an expression with the RealScalar type.
meanwhile you can work around this bug by adding .real()
Benoit
2010/5/22 Manoj Rajagopalan <rmanoj@xxxxxxxxx>:
> Hi,
>
> In the following program, I try to compute the squaredNorm of each column
> of a complex-double matrix. The result should be a vector of doubles which
> should be assignable to a vector of doubles. It seems Eigen sets the type of
> the temporary to be complex-double and indicates that I am illegally mixing
> different types. Is this by design?
>
>
>
> int main(void)
> {
> int const N = 5;
> MatrixXcd M(N,N);
> M.setRandom();
> VectorXd v(N);
> v.setZero();
> v += M.colwise().squaredNorm(); // <-- ERROR: mixing types
> // also with norm()
> return 0;
> }
>
>
> Thanks,
> Manoj
>
>
>