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MAT_VARREADNEXT(3)    DragonFly Library Functions Manual    MAT_VARREADNEXT(3)

NAME
     Mat_VarReadNext - Reads the information and data for the next variable in
     a MATLAB MAT file.

SYNOPSIS
     #include <matio.h>

     matvar_t *
     Mat_VarReadNext(mat_t *mat);

DESCRIPTION
     The Mat_VarReadNext() function reads the information and data for the
     next variable stored in the open MAT file.

RETURN VALUES
     If there is another variable in the MAT file and is read successfully, a
     pointer to the MATLAB variable structure is returned. If there are no
     more variables, or there was an error reading the variable, NULL is
     returned.

EXAMPLES
     This example program opens a MAT file named by the first argument to the
     program, and uses Mat_VarReadNext() to read each variable in the file.
     For each variable read, the Mat_VarPrint(3) function is used to display
     the information and data of the variable.

     #include <stdlib.h>
     #include <stdio.h>
     #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;
         }

         while ( NULL != (matvar = Mat_VarReadNext(matfp)) ) {
             Mat_VarPrint(matvar,1);
             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