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MAT_VARWRITEAPPEND(3) | Library Functions Manual | MAT_VARWRITEAPPEND(3) |
NAME¶
Mat_VarWriteAppend
—
Writes/appends a MATLAB variable to an HDF5 format MATLAB MAT
file.
SYNOPSIS¶
#include <matio.h>
int
Mat_VarWriteAppend
(mat_t *matfp,
matvar_t *matvar, enum
matio_compression compress, int dim);
DESCRIPTION¶
TheMat_VarWriteAppend
() function writes (and optionally
appends) the MATLAB variable matvar to the MAT file
matfp which must be opened for writing. If the MATLAB
variable already exists in the MAT file, the new data is appended to this
variable along the (index 1 based) dimension d. 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/appended 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 in order to build a 2x1 array.#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_MAT73); 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 ) { int dim = 1; Mat_VarWriteAppend(matfp,matvar,MAT_COMPRESSION_ZLIB,dim); Mat_VarWriteAppend(matfp,matvar,MAT_COMPRESSION_ZLIB,dim); Mat_VarFree(matvar); } Mat_Close(matfp); return EXIT_SUCCESS; }
SEE ALSO¶
Mat_CreateVer(3), Mat_Open(3), Mat_VarRead(3), Mat_VarWrite(3)October 19, 2017 | Linux 4.19.0-10-amd64 |