diff options
Diffstat (limited to 'examples/h5_write.c')
-rw-r--r-- | examples/h5_write.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/examples/h5_write.c b/examples/h5_write.c new file mode 100644 index 0000000..5a8a39d --- /dev/null +++ b/examples/h5_write.c @@ -0,0 +1,78 @@ +/* + * This example writes data to HDF5 file. + * Data conversion is performed during write operation. + */ + +#include "hdf5.h" + +#define FILE "SDS.h5" +#define DATASETNAME "IntArray" +#define NX 5 /* dataset dimensions */ +#define NY 6 +#define RANK 2 + +main () +{ + hid_t file, dataset; /* file and dataset handles */ + hid_t datatype, dataspace; /* handles */ + size_t dimsf[2]; /* dataset dimensions */ + herr_t status; + int data[NX][NY]; /* data to write */ + int i, j; + +/* + * Data and output buffer initialization. + */ + +for (j = 0; j < NX; j++) { + for (i = 0; i < NY; i++) + data[j][i] = i + j; +} + /* 0 1 2 3 4 5 + 1 2 3 4 5 6 + 2 3 4 5 6 7 + 3 4 5 6 7 8 + 4 5 6 7 8 9 */ + +/* + * Create a new file using H5ACC_OVERWRITE access, + * default file creation properties, and default file + * access properties. + */ +file = H5Fcreate(FILE, H5ACC_DEFAULT, H5C_DEFAULT, H5C_DEFAULT); + +/* + * Describe the size of the array and create the data space for fixed + * size dataset. + */ +dimsf[0] = NX; +dimsf[1] = NY; +dataspace = H5Pcreate_simple(RANK, dimsf, NULL); + +/* + * Define datatype for the data in the file. + * We will store liitle endian INT32 numbers. + */ +datatype = H5Tcopy(H5T_NATIVE_INT32); +status = H5Tset_order(datatype, H5T_ORDER_LE); +/* + * Create a new dataset within the file using defined dataspace and + * datatype and default dataset creation properties. + */ +dataset = H5Dcreate(file, DATASETNAME, datatype, dataspace, + H5C_DEFAULT); + +/* + * Write the data to the dataset using default transfer properties. + */ +status = H5Dwrite(dataset, H5T_NATIVE_INT, H5P_ALL, H5P_ALL, + H5C_DEFAULT, data); + +/* + * Close/release resources. + */ +H5Dclose(dataset); +H5Pclose(dataspace); +H5Fclose(file); + +} |