Number of rows in mxArray
#include "matrix.h" size_t mxGetM(const mxArray *pm);
mxGetM returns the number of rows in the specified array. The
term rows always means the first dimension of the array, no matter
how many dimensions the array has. For example, if pm points to a
four-dimensional array having dimensions
8-by-9-by-5-by-3,
then mxGetM returns 8.
See these examples in
matlabroot/extern/examples/refbook
See these examples in
matlabroot/extern/examples/mx
See these examples in
matlabroot/extern/examples/mex