Re: Solving an eigenvalue problem

2010-05-03 Thread Daniel Wheeler
Hi John, You'll need to interface with pysparse directly. Using http://pysparse.sourceforge.net/jdsym.html#eigenvalue-solver You can get the pysparse matrix for you problem by doing eqn.cacheMatrix() eqn.solve(...) pysparseMatrix = eqn.getMatrix().matrix You'll have to figure how

Re: Solving an eigenvalue problem

2010-05-03 Thread John Gamble
Thanks, Daniel. I'll give that a try! On Mon, 2010-05-03 at 11:03 -0400, Daniel Wheeler wrote: Hi John, You'll need to interface with pysparse directly. Using http://pysparse.sourceforge.net/jdsym.html#eigenvalue-solver You can get the pysparse matrix for you problem by doing

Solving an eigenvalue problem

2010-05-02 Thread John Gamble
Dear all, I am attempting to use fipy to solve a coupled system consisting of the Poisson and Schroedinger equations. To solve the Schroedinger equation, I need to solve an eigenvalue problem to find allowed energies. Is there a way to tell fipy to search for the required eigenvalues? Many