DragonFly On-Line Manual Pages

MAT_VARREADINFO(3)    DragonFly Library Functions Manual    MAT_VARREADINFO(3)

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

SYNOPSIS
     #include <matio.h>

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

DESCRIPTION
     The Mat_VarReadInfo() function reads the information for the variable
     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 %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;
     }

SEE ALSO
     Mat_VarRead(3), Mat_VarReadNextInfo(3)

DragonFly 6.5-DEVELOPMENT       April 21, 2011       DragonFly 6.5-DEVELOPMENT