I have been doing matlab programming for a while for ocean models, and I finally get this mat2tecplot.m program work for dumping matlab data into tecplot binary formats directly. No tecio is needed.
Things that do not yet work: shared variables, shared connectivity.
Things that are not yet tested: polyhedron grids, face connectivity, shared faces.
Things that work: 2D,3D lines, 2D, 3D surfaces (ordered, FEtriangle, FEquadrilateral), 3D bricks, tetrahedrons, polyhedrons with equal number of nodes per element. texts, geometries.
I have posted here for you to try out.
http://www.cfd-online.com/Forums/tecplo ... post368641