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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 The Mat_VarWriteAppend() function writes (and optionally appends) the MAT- LAB 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 ap- pended 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 uncom- pressed. 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) FreeBSD ports 15.quarterly September 12, 2019 MAT_VARWRITEAPPEND(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO
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