SUBROUTINE SBG( STATUS ) *+ * Name: * SBG * Purpose: * Writes reference to background dataset into source dataset * Language: * Starlink Fortran * Type of Module: * ASTERIX task * Invocation: * CALL SBG( STATUS ) * Arguments: * STATUS = INTEGER (Given and Returned) * The global status. * Description: * Writes the logical BGND file link to the specified source dataset. * This link can be used subsequently by ASTERIX to load the background * dataset automatically. Supplying a null value for the background * dataset results in the file link being deleted. * Usage: * sbg {parameter_usage} * Environment Parameters: * INP = UNIV (update) * Source dataset * BGFILE = UNIV (read) * Background dataset * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * Implementation Status: * {routine_implementation_status} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * {task_references}... * Keywords: * sbg, usage:public * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * TJP: Trevor Ponman (University of Birmingham) * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 1 Jul 1992 V1.6-1 (TJP): * Original version. * 24 Nov 1994 V1.8-0 (DJA): * Now use USI for user interface * 28 Jul 1995 V2.0-0 (DJA): * Use new FRI routine * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants INCLUDE 'ADI_PAR' INCLUDE 'PAR_ERR' * Status: INTEGER STATUS ! Global status * Local Constants: CHARACTER*30 VERSION PARAMETER ( VERSION = 'SBG Version 2.0-0' ) * Local Variables: INTEGER IFID ! Source dataset INTEGER BFID ! Background dataset *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Version id CALL MSG_PRNT( VERSION ) * Initialise ASTERIX CALL AST_INIT() * Get names of source and background datasets CALL USI_ASSOC( 'INP', 'BinDS', 'UPDATE', IFID, STATUS ) IF ( STATUS .NE. SAI__OK ) GOTO 99 CALL USI_ASSOC( 'BGFILE', 'BinDS', 'READ', BFID, STATUS ) IF ( STATUS .EQ. PAR__NULL ) THEN CALL ERR_ANNUL( STATUS ) BFID = ADI__NULLID * Abort on other bad status values ELSE IF ( STATUS .NE. SAI__OK ) THEN GOTO 99 END IF * Make the link CALL FRI_PUTI( IFID, 'BGND', BFID, STATUS ) * Tidy up 99 CALL AST_CLOSE() CALL AST_ERR( STATUS ) END