MAT_VARWRITE(3) BSD Library Functions Manual MAT_VARWRITE(3)NAMEMat_VarWrite — Writes a MATLAB variable to a MATLAB MAT file.
SYNOPSIS
#include <matio.h>
int
Mat_VarWrite(mat_t *mat, matvar_t *matvar,
enum matio_compression compress);
DESCRIPTION
The Mat_VarWrite() function writes the MATLAB variable matvar to the MAT
file mat which must be opened for writing. If the MAT file is a level 5
MAT file, the compress option allows the variable to be written using
zlib compression if available. If compression is not available, the vari‐
able is written uncompressed.
RETURN VALUES
The function returns 0 if the variable was successfully written to the
MAT file. otherwise, an error value is returned.
EXAMPLES
This example program creates a MAT file named by the first argument to
the program, and writes the variable named m_pi to the file.
#include <math.h>
#include "matio.h"
int
main(int argc,char **argv)
{
mat_t *matfp;
matvar_t *matvar;
size_t dims[2] = {1,1};
double m_pi = M_PI;
matfp = Mat_CreateVer(argv[1],NULL,MAT_FT_DEFAULT);
if ( NULL == matfp ) {
fprintf(stderr,"Error creating MAT file %s0,argv[1]);
return EXIT_FAILURE;
}
matvar = Mat_VarCreate("m_pi",MAT_C_DOUBLE,MAT_T_DOUBLE,2,dims,&m_pi,0);
if ( NULL != matvar ) {
Mat_VarWrite(matfp,matvar,MAT_COMPRESSION_ZLIB);
Mat_VarFree(matvar);
}
Mat_Close(matfp);
return EXIT_SUCCESS;
}
SEE ALSOMat_CreateVer(3), Mat_Open(3), Mat_VarRead(3)BSD March 18, 2012 BSD
