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)