CGNS is a de facto standard file format for exchanging data in CFD and other mesh-based simulations. CGNS provides native C and Fortran interfaces. However, many users and developers in scientific and engineering computing use MATLAB and Octave for daily development work. Up to now there was no MATLAB/Octave interfaces for CGNS. MatCGNS aims to fill in this gap. MatCGNS provides the complete CGNS mid-level library interface to users through MEX functions, as well as high-level interfaces specifically written for reading and writing unstructured meshes with node-centered and cell-centered data in MATLAB and Octave. Most users would find the high-level interfaces easy to use and can also adapt them by calling the mid-level library.

To install mexCGNS, see the Installation Guide.

If you use mexCGNS and found it useful, please email me and I will add you to the user list.