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#include "mfhdf.h"
#define FILE_NAME "SDS.hdf"
#define FILE_ATTR_NAME "File_contents"
#define SDS_ATTR_NAME "Valid_range"
#define DIM_ATTR_NAME "Dim_metric"
int main()
{
/************************* Variable declaration **************************/
int32 sd_id, sds_id, sds_index;
intn status;
int32 dim_id, dim_index;
int32 n_values; /* number of values of the file, SDS or
dimension attribute */
char8 file_values[] = "Storm_track_data";
/* values of the file attribute */
float32 sds_values[2] = {2., 10.};
/* values of the SDS attribute */
char8 dim_values[] = "Seconds";
/* values of the dimension attribute */
/********************* End of variable declaration ***********************/
/*
* Open the file and initialize the SD interface.
*/
sd_id = SDstart (FILE_NAME, DFACC_WRITE);
/*
* Set an attribute that describes the file contents.
*/
n_values = 16;
status = SDsetattr (sd_id, FILE_ATTR_NAME, DFNT_CHAR, n_values,
(VOIDP)file_values);
/*
* Select the first data set.
*/
sds_index = 0;
sds_id = SDselect (sd_id, sds_index);
/*
* Assign attribute to the first SDS. Note that attribute values
* may have different data type than SDS data.
*/
n_values = 2;
status = SDsetattr (sds_id, SDS_ATTR_NAME, DFNT_FLOAT32, n_values,
(VOIDP)sds_values);
/*
* Get the the second dimension identifier of the SDS.
*/
dim_index = 1;
dim_id = SDgetdimid (sds_id, dim_index);
/*
* Set an attribute of the dimension that specifies the dimension metric.
*/
n_values = 7;
status = SDsetattr (dim_id, DIM_ATTR_NAME, DFNT_CHAR, n_values,
(VOIDP)dim_values);
/*
* Terminate access to the data set.
*/
status = SDendaccess (sds_id);
/*
* Terminate access to the SD interface and close the file.
*/
status = SDend (sd_id);
return 0;
}
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