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mxCreateNumericMatrix (Fortran)

2-D numeric matrix

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Fortran Syntax

#include "fintrf.h"
mwPointer mxCreateNumericMatrix(m, n, classid, ComplexFlag)
mwSize m, n
integer*4 classid, ComplexFlag

Description

Use mxCreateNumericMatrix to create a 2-D mxArray. The classid specifies the numeric data type of the elements in the array.

This table shows the Fortran types that are equivalent to MATLAB® classes.

MATLAB Class Name

Fortran Type

int8

BYTE

int16

INTEGER*2

int32

INTEGER*4

int64

INTEGER*8

single

REAL*4
COMPLEX*8

double

REAL*8
COMPLEX*16

Call mxDestroyArray when you finish using the mxArray. The mxDestroyArray function deallocates the mxArray and its associated real and imaginary elements.

Input Arguments

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Number of rows, specified as mwSize.

Number of columns, specified as mwSize.

Class identifier, specified as integer*4. The classid argument determines how the numerical data is represented in memory. Use the mxClassIdFromClassName function to derive the classid value from a MATLAB class name.

Complex array indicator, specified as an 0 or 1.

For applications built with the mex -R2018a command, the function initializes each data element to 0.

For all other mex release-specific build options, the function sets each element in the pr array. If ComplexFlag is 1, then the function sets the pi array to 0.

Output Arguments

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Pointer to an mxArray of type mxChar, specified as mwPointer, if successful.

The function is unsuccessful when there is not enough free heap space to create the mxArray.

  • MEX file — Function terminates the MEX file and returns control to the MATLAB prompt.

  • Standalone (non-MEX file) application — Function returns 0.

Examples

These Fortran statements create a 4-by-3 matrix of REAL*4 elements having no imaginary components:

C      Create 4x3 mxArray of REAL*4
       mxCreateNumericMatrix(4, 3,
     +                mxClassIDFromClassName('single'), 0)

Version History

Introduced before R2006a

See Also

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