Hi,

I'm trying to do some MDS and need to do some basic things and trying to decide if Eigen is the right library to use: I need a simple implementation of non-metric MDS.

More specifically can I use Eigen to efficiently:

1. Create a matrix of all pair-wise distances in a mesh
2. Perform basic operations such as row-mean, column mean, matrix mean.
3. Compute the two eigenvectors of a matrix

Any chance people could point me in the right direction of this library, or suggest otherwise if i'm in the wrong place?

Thank you for your help
Chris

Well, you can certainly do it with Eigen, but the question is if Eigen isn't a bit too low-level for your purpose, which depends on what you ultimately want to achieve, and what is already given, etc.

Perhaps have a look at some more high-level libraries, like the following

CGAL: http://www.cgal.org/
VCGLib: http://vcg.sourceforge.net/index.php/Main_Page
OpenMesh/OpenFlipper: http://www.openflipper.org/index.php?id=238