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MAT_VARREAD(3)        DragonFly Library Functions Manual        MAT_VARREAD(3)

NAME
     Mat_VarRead - Reads the information and data for a specific variable in a
     MATLAB MAT file.

SYNOPSIS
     #include <matio.h>

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

DESCRIPTION
     The Mat_VarRead() function reads the information and data for the
     variable name in the open MAT file.

RETURN VALUES
     If the variable was found in the MAT file and 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, NULL is returned.

EXAMPLES
     This example program opens a MAT file named by the first argument to the
     program, and reads a variable named x from the file. The MATIO function
     Mat_VarPrint is used to print the information and data from the file.

     #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_VarRead(matfp,"x");
         if ( NULL != matvar ) {
             Mat_VarPrint(matvar);
             Mat_VarFree(matvar);
         }

         Mat_Close(matfp);
         return EXIT_SUCCESS;
     }

SEE ALSO
     Mat_VarReadInfo(3), Mat_VarReadNext(3), Mat_VarPrint(3)

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