Gets an HDF Scientific Data Set.

filename—The name of the HDF file.

data—An array containing values from the Scientific Data Set. The data type and dimensions for data are automatically set using calls to DFSDGETNT and DFSDGETDIMS.

status—The status of the function call, where:

Help—If present and nonzero, lists the usage for this routine.

Maxrank—Maximum number of dimensions expected with this dataset. The default value is 10.

Usage—If present and nonzero, lists the usage for this routine. (Same as the Help keyword.)

HDFGETSDS obtains the current Scientific Data Set in an HDF file and positions the active pointer to the next SDS. This function is preferred for getting Scientific Data Sets, as it automatically dimensions and casts a PV‑WAVE array prior to obtaining the actual data.

hdf_init

@hdf_common

testfile = !Data_dir + '/storm.hdf'

data = 0

status = DFSDrestart()

IF (status EQ FAIL) THEN  $

   MESSAGE, 'Failed DFSDrestart for HDFGETSDS.'

status = HDFGETSDS (testfile, data, Maxrank=100)

IF (status EQ FAIL) THEN  $

   MESSAGE, 'HDFGETSDS failed.'

HDFGETNT

Also refer to the following routines in the HDF Reference Manual:

DFSDGETDATA,   DFSDGETDIMS,   DFSDLASTREF

For more information on using the HDF interface and the calling sequence for the entire suite of HDF base functions, refer to PV-WAVE HDF Interface.

For a complete list of the HDF convenience routines, refer to Functional Summary of Routines.