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authorElena Pourmal <epourmal@hdfgroup.org>1998-02-10 18:04:57 (GMT)
committerElena Pourmal <epourmal@hdfgroup.org>1998-02-10 18:04:57 (GMT)
commitfcaa973a2afe313c4ee716fcd19f152913b4d23a (patch)
treec8131bd57f90821d95f187160db6951417c42e99
parentb933610dde3054da9843eda928b076863123f739 (diff)
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[svn-r241] h5_extend_read.c shows how to read from chunked dataset.
Program name does not reflect its purpose. Removed. Will be added under new name h5_chunk_read.c
-rw-r--r--examples/h5_extend_read.c141
1 files changed, 0 insertions, 141 deletions
diff --git a/examples/h5_extend_read.c b/examples/h5_extend_read.c
deleted file mode 100644
index 6965722..0000000
--- a/examples/h5_extend_read.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * This example shows how to work with extendable dataset.
- * In the current version of the library dataset MUST be
- * chunked.
- *
- */
-
-#include "hdf5.h"
-
-#define FILE "SDSextendable.h5"
-#define DATASETNAME "ExtendableArray"
-#define RANK 2
-#define NX 10
-#define NY 5
-
-main ()
-{
- hid_t file; /* handles */
- hid_t datatype, dataset;
- hid_t filespace;
- hid_t memspace;
- hid_t cparms;
- H5T_class_t class; /* data type class */
- size_t elem_size; /* size of the data element
- stored in file */
- size_t dims[2]; /* dataset and chunk dimensions */
- size_t chunk_dims[2];
-
- size_t size[2];
- size_t count[2];
- int offset[2];
-
- herr_t status, status_n;
-
- int data_out[NX][NY]; /* buffer for dataset to be read */
- int chunk_out[2][5]; /* buffer for chunk to be read */
- int i, j, rank, rank_chunk;
-
-
-/*
- * Open the file and the dataset.
- */
-file = H5Fopen(FILE, H5ACC_DEFAULT, H5C_DEFAULT);
-dataset = H5Dopen(file, DATASETNAME);
-
-/*
- * Get dataset rank and dimension.
- */
-
-filespace = H5Dget_space(dataset); /* Get filespace handle first. */
-rank = H5Pget_ndims(filespace);
-status_n = H5Pget_dims(filespace, dims);
-printf("dataset rank %d, dimensions %d x %d \n", rank, dims[0], dims[1]);
-
-/*
- * Get creation properties.
- */
-cparms = H5Dget_create_parms(dataset); /* Get properties handle first. */
-
-/*
- * Get chunking information: rank and dimensions
- */
-rank_chunk = H5Cget_chunk(cparms, 2, chunk_dims);
-printf("chunk rank %d, dimensions %d x %d \n", rank_chunk,
- chunk_dims[0], chunk_dims[1]);
-
-
-/*
- * Define the memory filespace to read dataset.
- */
-memspace = H5Pcreate_simple(RANK,dims,NULL);
-
-/*
- * Read dataset back and display.
- */
-status = H5Dread(dataset, H5T_NATIVE_INT, memspace, filespace,
- H5C_DEFAULT, data_out);
- printf("\n");
- printf("Dataset: \n");
-for (j = 0; j < dims[0]; j++) {
- for (i = 0; i < dims[1]; i++) printf("%d ", data_out[j][i]);
- printf("\n");
-}
-
-/*
- dataset rank 2, dimensions 10 x 5
- chunk rank 2, dimensions 2 x 5
-
- Dataset:
- 1 1 1 3 3
- 1 1 1 3 3
- 1 1 1 0 0
- 2 0 0 0 0
- 2 0 0 0 0
- 2 0 0 0 0
- 2 0 0 0 0
- 2 0 0 0 0
- 2 0 0 0 0
- 2 0 0 0 0
-*/
-
-/*
- * Define the memory filespace to read a chunk.
- */
-memspace = H5Pcreate_simple(rank_chunk,chunk_dims,NULL);
-
-/*
- * Define chunk in the file (hyperslab) to read.
- */
-offset[0] = 2;
-offset[1] = 0;
-count[0] = chunk_dims[0];
-count[1] = chunk_dims[1];
-status = H5Pset_hyperslab(filespace, offset, count, NULL);
-
-/*
- * Read chunk back and display.
- */
-status = H5Dread(dataset, H5T_NATIVE_INT, memspace, filespace,
- H5C_DEFAULT, chunk_out);
- printf("\n");
- printf("Chunk: \n");
-for (j = 0; j < chunk_dims[0]; j++) {
- for (i = 0; i < chunk_dims[1]; i++) printf("%d ", chunk_out[j][i]);
- printf("\n");
-}
-/*
- Chunk:
- 1 1 1 0 0
- 2 0 0 0 0
-*/
-
-/*
- * Close/release resources.
- */
-H5Dclose(dataset);
-H5Pclose(filespace);
-H5Pclose(memspace);
-H5Fclose(file);
-
-}