UDF_READ UDF IDL INTERFACE MANUAL UDF_READ
NAME
UDF_READ
USAGE
dS =  UDF_READ ( fh )
INPUT DEFINITIONS
fh - Index into the information array to the UDF from which data is to be read. fh is the return value obtained from call to UDF_OPEN for this UDF source.
RETURN DEFINITION
dS - IDL structure of UDF data
DESCRIPTION
UDF_READ() reads the data from the UDF defined by the variable fh which was established in a call to UDF_OPEN. All data associated with the current time is read and returned in the IDL structure dS. How the data is grouped in the structure and the units assigned to the returned data will depend on the KEYWORDS settings.

Each read returns the complete set of measurements defined in the PIDF definition of the UDF data set together with the phase and elevation values associated with the data, timing and quality information.

ERRORS
USAGE : dS = UDF_READ(fh)
UDF_READ : malloc(fh->dA) failed!
ReadDrec : %d (Udf Error from read_drec)
APPLICABLE FORMATS
UDF V2.2, V2.1, IDFS V2.1
RESTRICTIONS
None.
SEE ALSO
None. ret_codes (1H)
Dec 7, 2002
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