MATLAB Application Program Interface Reference

Write mxArrays into MAT-files

#include "mat.h"
int matPutArray(MATFile *mfp, const mxArray *mp);

Arguments

mfp

Pointer to MAT-file information.

mp

mxArray pointer.

Description

This routine allows you to put an mxArray into a MAT-file.

matPutArray writes mxArray mp to the MAT-file mfp. If the mxArray does not exist in the MAT-file, it is appended to the end. If an mxArray with the same name already exists in the file, the existing mxArray is replaced with the new mxArray by rewriting the file. The size of the new mxArray can be different than the existing mxArray.

matPutArray returns 0 if successful and nonzero if an error occurs. Use feof and ferror from the Standard C Library along with matGetFp to determine status.

Be careful in your code to free the mxArray created by this routine when you are finished with it.

Example

See matdemo.c in the eng_mat subdirectory of the examples directory for a sample program that illustrates how to use the MATLAB MAT-file routines in a C program.

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