94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
#include <stdlib.h>
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#include <hdf5.h>
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#define FILE1 "trefer1.h5"
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/* dataset with fixed dimensions */
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#define SPACE1_NAME "Space1"
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#define SPACE1_RANK 1
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#define SPACE1_DIM1 4
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int
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main(void)
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{
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hid_t fid1; /* HDF5 File IDs */
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hid_t dataset, /* Dataset ID */
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dset2; /* Dereferenced dataset ID */
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hid_t group; /* Group ID */
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hid_t sid1; /* Dataspace ID */
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hid_t tid1; /* Datatype ID */
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hobj_ref_t *rbuf; /* buffer to read from disk */
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int *tu32; /* temp. buffer read from disk */
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int i; /* counting variables */
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char read_comment[10];
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herr_t ret; /* Generic return value */
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/* Allocate read buffers */
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rbuf = malloc(sizeof(hobj_ref_t)*SPACE1_DIM1);
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tu32 = malloc(sizeof(int)*SPACE1_DIM1);
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/* Open the file */
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fid1 = H5Fopen(FILE1, H5F_ACC_RDWR, H5P_DEFAULT);
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/* Open the dataset */
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dataset=H5Dopen(fid1,"/Dataset3");
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/* Read selection from disk */
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ret=H5Dread(dataset,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,rbuf);
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/* Open dataset object */
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dset2 = H5Rdereference(dataset,H5R_OBJECT,&rbuf[0]);
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/* Check information in referenced dataset */
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sid1 = H5Dget_space(dset2);
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ret=H5Sget_simple_extent_npoints(sid1);
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/* Read from disk */
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ret=H5Dread(dset2,H5T_NATIVE_INT,H5S_ALL,H5S_ALL,H5P_DEFAULT,tu32);
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printf("Dataset data : \n");
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for (i=0; i < SPACE1_DIM1 ; i++) printf (" %d ", tu32[i]);
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printf("\n");
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printf("\n");
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/* Close dereferenced Dataset */
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ret = H5Dclose(dset2);
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/* Open group object */
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group = H5Rdereference(dataset,H5R_OBJECT,&rbuf[2]);
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/* Get group's comment */
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ret=H5Gget_comment(group,".",10,read_comment);
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printf("Group comment is %s \n", read_comment);
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printf(" \n");
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/* Close group */
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ret = H5Gclose(group);
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/* Open datatype object */
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tid1 = H5Rdereference(dataset,H5R_OBJECT,&rbuf[3]);
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/* Verify correct datatype */
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{
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H5T_class_t tclass;
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tclass= H5Tget_class(tid1);
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if ((tclass == H5T_COMPOUND))
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printf ("Number of compound datatype members is %d \n", H5Tget_nmembers(tid1));
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printf(" \n");
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}
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/* Close datatype */
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ret = H5Tclose(tid1);
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/* Close Dataset */
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ret = H5Dclose(dataset);
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/* Close file */
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ret = H5Fclose(fid1);
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/* Free memory buffers */
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free(rbuf);
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free(tu32);
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return 0;
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}
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