IRA_FIND - Finds an astrometry structure within an NDF

Description:

A search is made for an astrometry structure within an NDF. If one is found, THERE is returned true. If one is not found, no error is reported but THERE is returned false. The name of the extension in which it was found is returned, together with the name of the astrometry structure, and a locator to the extension.

Invocation:

CALL IRA_FIND( INDF, THERE, XNAME, ASNAME, LOC, STATUS )

Arguments:

INDF = INTEGER (Given)

The NDF identifier.

THERE = LOGICAL (Returned)

True if an astrometry structure was found, false otherwise.

XNAME = CHARACTER $*$ ( $*$ ) (Returned)

The name of the NDF extension in which the astrometry structure was found. Blank if none found.

ASNAME = CHARACTER $*$ ( $*$ ) (Returned)

The name of a component of the NDF extension holding the astrometry information. Blank if none found.

LOC = CHARACTER $*$ ( $*$ ) (Returned)

A locator to the extension identified by XNAME. DAT__NOLOC if no astrometry structure is found.

STATUS = INTEGER (Given and Returned)

The global status.