Mat_VarReadInfo (3) - Linux Manuals

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

NAME

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

SYNOPSIS

Fd #include <matio.h> Ft matvar_t * Fo Mat_VarReadInfo Fa mat_t *mat Fa const char *name Fc

DESCRIPTION

The Fn Mat_VarReadInfo function reads the information for the variable Fa name in the open MAT file.

RETURN VALUES

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.

EXAMPLES

#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 %s,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;
}