How do I create an N-D matrix of doubles in a MATLAB MEX file?

Question

I need to make a 3-D matrix in a MEX file. In the API reference, there is mention of mxCreateCellArray for N-D cell arrays, mxCreateStructArray for structs, etc. But there is no mxCreateDoubleArray mentioned. Is this possible?

Answer 1

You can use mxCreateNumericArray to create arrays of different types by specifying the appropriate array class identifier for the classid argument:

• C syntax: use mxDOUBLE_CLASS for the classid argument.

• Fortran syntax: use the function mxClassIDFromClassName with the argument 'double' to get the value for the classid argument.