Ubuntu Manpages

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 () 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)