Man page - mat_varread(3)

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Manual

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MAT_VARREAD (3) 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 *matfp , 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) Debian September 12, 2019 MAT_VARREAD (3)

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