diff options
Diffstat (limited to 'examples/h5_chunk_read.c')
| -rw-r--r-- | examples/h5_chunk_read.c | 47 |
1 files changed, 44 insertions, 3 deletions
diff --git a/examples/h5_chunk_read.c b/examples/h5_chunk_read.c index be2a0be..859e526 100644 --- a/examples/h5_chunk_read.c +++ b/examples/h5_chunk_read.c @@ -8,8 +8,9 @@ #define FILE "SDSextendible.h5" #define DATASETNAME "ExtendibleArray" #define RANK 2 -#define NX 10 -#define NY 5 +#define RANKC 1 +#define NX 10 +#define NY 5 main () { @@ -23,7 +24,7 @@ main () stored in file */ size_t dims[2]; /* dataset and chunk dimensions */ size_t chunk_dims[2]; - + size_t col_dims[1]; size_t size[2]; size_t count[2]; int offset[2]; @@ -32,6 +33,7 @@ main () int data_out[NX][NY]; /* buffer for dataset to be read */ int chunk_out[2][5]; /* buffer for chunk to be read */ + int column[10]; /* buffer for column to be read */ int i, j, rank, rank_chunk; @@ -103,6 +105,45 @@ for (j = 0; j < dims[0]; j++) { */ /* + * Read the third column from the dataset. + * First define memory dataspace, then define hyperslab + * and read it into column array. + */ +col_dims[0] = 10; +memspace = H5Pcreate_simple(RANKC, col_dims, NULL); + +/* + * Define the column (hyperslab) to read. + */ +offset[0] = 0; +offset[1] = 2; +count[0] = 10; +count[1] = 1; +status = H5Pset_hyperslab(filespace, offset, count, NULL); +status = H5Dread(dataset, H5T_NATIVE_INT, memspace, filespace, + H5C_DEFAULT, column); +printf("\n"); +printf("Third column: \n"); +for (i = 0; i < 10; i++) { + printf("%d \n", column[i]); +} + +/* + + Third column: + 1 + 1 + 1 + 0 + 0 + 0 + 0 + 0 + 0 + 0 +*/ + +/* * Define the memory space to read a chunk. */ memspace = H5Pcreate_simple(rank_chunk,chunk_dims,NULL); |