Mat_VarWrite (3) Linux Manual Page
Mat_VarWrite – Writes a MATLAB variable to a MATLAB MAT file.
Synopsis
Fd #include <matio.h> Ft int Fo Mat_VarWrite Fa mat_t *mat Fa matvar_t *matvar Fa enum matio_compression compress FcDescription
The Fn Mat_VarWrite function writes the MATLAB variable Fa matvar to the MAT file Fa 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 variable 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 %s,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;
}