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mxGetData (C)

Data elements in nonnumeric mxArray

mxGetData is not recommended for numeric arrays. Use typed, data-access functions instead. For more information, see Compatibility Considerations.

C Syntax

#include "matrix.h"
void *mxGetData(const mxArray *pm);

Description

Use mxGetData to get data elements for nonnumeric arrays only.

For numeric arrays, MathWorks recommends that you create MEX files and update existing MEX files to use the typed, data-access functions in the interleaved complex API. For more information, see:

To build the MEX file, call mex with the -R2018a option.

Input Arguments

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Pointer to a nonnumeric MATLAB array, specified as mxArray *.

Output Arguments

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Pointer to the data array within an mxArray, specified as void *. Since void pointers point to a value that has no type, cast the return value to the pointer type that matches the type specified by pm. For information on mapping MATLAB types to their equivalent C types, see mxClassID.

If pm is NULL, then the function returns NULL.

Compatibility Considerations

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Behavior changed in R2018a

Introduced before R2006a