Number of columns in array
#include "matrix.h" size_t mxGetN(const mxArray *pm);
#include "fintrf.h" mwPointer mxGetN(pm) mwPointer pm
pmPointer to an mxArray
Number of columns in the mxArray.
Call mxGetN to determine the number of columns in the specified
mxArray.
If pm is an N-dimensional mxArray,
mxGetN is the product of dimensions 2 through N. For example,
if pm points to a four-dimensional mxArray having
dimensions
13-by-5-by-4-by-6,
mxGetN returns the value 120 (5 × 4
× 6). If the specified mxArray has more than two dimensions,
then call mxGetDimensions to find out how many elements are in each
dimension.
If pm points to a sparse mxArray,
mxGetN still returns the number of columns, not the number of
occupied columns.
Fortran does not have an equivalent of size_t. mwPointer is a preprocessor macro
that provides the appropriate Fortran type. The value returned by
this function, however, is not a pointer.
See these examples in
matlabroot/extern/examples/refbook
See these examples in
matlabroot/extern/examples/mx
See these examples in
matlabroot/extern/examples/mex
See these examples in
matlabroot/extern/examples/eng_mat