Hi, In chapter 14 of the docs (Writing a C extension to NumPy), the last section (a less simple example) deals with mixing Fortran and C code. Wouldn't it be useful to mention the topic of different storage orders there, and to reflect this in the code by swapping some stride parameters? Could avoid a lot of frustration... Peter ------------------------------------- Peter Bienstman Department of Information Technology INTEC/IMEC - Ghent University St.-Pietersnieuwstraat 41 B-9000 Gent - Belgium E-mail: Peter.Bienstman@rug.ac.be Tel: +32 9 264 3445 Fax: +32 9 264 3593 -------------------------------------