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Man Pages
MAT_VARREADINFO(3) FreeBSD Library Functions Manual MAT_VARREADINFO(3)

Mat_VarReadInfo
Reads the information for a specific variable in a MATLAB MAT file.

#include <matio.h>

matvar_t *
Mat_VarReadInfo(mat_t *matfp, const char *name);

The Mat_VarReadInfo() function reads the information for the variable name in the open MAT file.

If the variable was found in the MAT file and the information about the variable successfully read, a pointer to the MATLAB variable structure is returned. If the variable was not found, or there was an error reading the variable information, NULL is returned.

#include "matio.h"

int
main(int argc, char **argv)
{
    mat_t    *matfp;
    matvar_t *matvar;

    matfp = Mat_Open(argv[1], MAT_ACC_RDONLY);
    if ( NULL == matfp ) {
        fprintf(stderr, "Error opening MAT file %s0, argv[1]);
        return EXIT_FAILURE;
    }

    matvar = Mat_VarReadInfo(matfp, "x");
    if ( NULL != matvar ) {
        Mat_VarPrint(matvar);
        Mat_VarFree(matvar);
    }

    Mat_Close(matfp);
    return EXIT_SUCCESS;
}

Mat_VarRead(3), Mat_VarReadNextInfo(3), Mat_VarPrint(3)
September 12, 2019 FreeBSD 13.1-RELEASE

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