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Diffstat (limited to 'doc/html/Tutor/examples/h5_read.c')
| -rw-r--r-- | doc/html/Tutor/examples/h5_read.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/doc/html/Tutor/examples/h5_read.c b/doc/html/Tutor/examples/h5_read.c deleted file mode 100644 index 8f2f179..0000000 --- a/doc/html/Tutor/examples/h5_read.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * This example reads hyperslab from the SDS.h5 file - * created by h5_write.c program into two-dimensional - * plane of the three-dimensional array. - * Information about dataset in the SDS.h5 file is obtained. - */ - -#include "hdf5.h" - -#define FILE "SDS.h5" -#define DATASETNAME "IntArray" -#define NX_SUB 3 /* hyperslab dimensions */ -#define NY_SUB 4 -#define NX 7 /* output buffer dimensions */ -#define NY 7 -#define NZ 3 -#define RANK 2 -#define RANK_OUT 3 - -int -main (void) -{ - hid_t file, dataset; /* handles */ - hid_t datatype, dataspace; - hid_t memspace; - H5T_class_t class; /* data type class */ - H5T_order_t order; /* data order */ - size_t size; /* - * size of the data element - * stored in file - */ - hsize_t dimsm[3]; /* memory space dimensions */ - hsize_t dims_out[2]; /* dataset dimensions */ - herr_t status; - - int data_out[NX][NY][NZ ]; /* output buffer */ - - hsize_t count[2]; /* size of the hyperslab in the file */ - hsize_t offset[2]; /* hyperslab offset in the file */ - hsize_t count_out[3]; /* size of the hyperslab in memory */ - hsize_t offset_out[3]; /* hyperslab offset in memory */ - int i, j, k, status_n, rank; - - for (j = 0; j < NX; j++) { - for (i = 0; i < NY; i++) { - for (k = 0; k < NZ ; k++) - data_out[j][i][k] = 0; - } - } - - /* - * Open the file and the dataset. - */ - file = H5Fopen(FILE, H5F_ACC_RDONLY, H5P_DEFAULT); - dataset = H5Dopen(file, DATASETNAME); - - /* - * Get datatype and dataspace handles and then query - * dataset class, order, size, rank and dimensions. - */ - datatype = H5Dget_type(dataset); /* datatype handle */ - class = H5Tget_class(datatype); - if (class == H5T_INTEGER) printf("Data set has INTEGER type \n"); - order = H5Tget_order(datatype); - if (order == H5T_ORDER_LE) printf("Little endian order \n"); - - size = H5Tget_size(datatype); - printf(" Data size is %d \n", size); - - dataspace = H5Dget_space(dataset); /* dataspace handle */ - rank = H5Sget_simple_extent_ndims(dataspace); - status_n = H5Sget_simple_extent_dims(dataspace, dims_out, NULL); - printf("rank %d, dimensions %lu x %lu \n", rank, - (unsigned long)(dims_out[0]), (unsigned long)(dims_out[1])); - - /* - * Define hyperslab in the dataset. - */ - offset[0] = 1; - offset[1] = 2; - count[0] = NX_SUB; - count[1] = NY_SUB; - status = H5Sselect_hyperslab(dataspace, H5S_SELECT_SET, offset, NULL, - count, NULL); - - /* - * Define the memory dataspace. - */ - dimsm[0] = NX; - dimsm[1] = NY; - dimsm[2] = NZ ; - memspace = H5Screate_simple(RANK_OUT,dimsm,NULL); - - /* - * Define memory hyperslab. - */ - offset_out[0] = 3; - offset_out[1] = 0; - offset_out[2] = 0; - count_out[0] = NX_SUB; - count_out[1] = NY_SUB; - count_out[2] = 1; - status = H5Sselect_hyperslab(memspace, H5S_SELECT_SET, offset_out, NULL, - count_out, NULL); - - /* - * Read data from hyperslab in the file into the hyperslab in - * memory and display. - */ - status = H5Dread(dataset, H5T_NATIVE_INT, memspace, dataspace, - H5P_DEFAULT, data_out); - for (j = 0; j < NX; j++) { - for (i = 0; i < NY; i++) printf("%d ", data_out[j][i][0]); - printf("\n"); - } - /* - * 0 0 0 0 0 0 0 - * 0 0 0 0 0 0 0 - * 0 0 0 0 0 0 0 - * 3 4 5 6 0 0 0 - * 4 5 6 7 0 0 0 - * 5 6 7 8 0 0 0 - * 0 0 0 0 0 0 0 - */ - - /* - * Close/release resources. - */ - H5Tclose(datatype); - H5Dclose(dataset); - H5Sclose(dataspace); - H5Sclose(memspace); - H5Fclose(file); - - return 0; -} |