bionic (3) Mat_VarReadNext.3.gz

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 *matfp);

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), Mat_VarPrint(3)