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MAT_VARWRITEAPPEND(3) Library Functions Manual MAT_VARWRITEAPPEND(3) NAME Mat_VarWriteAppend -- Writes/appends a MATLAB variable to an HDF5 for- mat 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 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) dimen- sion 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/ap- pended 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 14.quarterly September 12, 2019 MAT_VARWRITEAPPEND(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO
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