SUBROUTINE GCB1_LOAD( NARG, ARGS, OARG, STATUS ) *+ * Name: * GCB1_LOAD * Purpose: * Loads Grafix Control Block from HDS file object * Language: * Starlink Fortran * Invocation: * CALL GCB1_LOAD( NARG, ARGS, OARG, STATUS ) * Description: * Loads the GCB from an HDS file. * Arguments: * NARG = INTEGER (given) * Number of method arguments * ARGS(*) = INTEGER (given) * ADI identifier of method arguments * OARG = INTEGER (returned) * Output data * STATUS = INTEGER (given and returned) * The global status. * 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} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * GCB Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/gcb.html * Keywords: * package:gcb, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 12 Jan 1995 (DJA): * Original version. * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants INCLUDE 'DAT_PAR' INCLUDE 'GCB_PAR' * Global Variables: INCLUDE 'GCB_CMN' * Arguments Given: INTEGER NARG, ARGS(*) * Arguments Returned: INTEGER OARG * Status: INTEGER STATUS ! Global status * Local Variables: CHARACTER*(DAT__SZLOC) GCBLOC ! GRAFIX_CONTROL object CHARACTER*(DAT__SZLOC) GLOC ! GRAFIX box INTEGER GCBPTR ! Ptr to mapped GCB INTEGER NBYTE ! Size of GCB LOGICAL OK ! Read from file? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Initialise OK = .FALSE. * GRAFIX box exists? CALL ADI1_LOCGRAF( ARGS(1), .FALSE., GLOC, STATUS ) IF ( STATUS .EQ. SAI__OK ) THEN * GCB in file? CALL DAT_THERE( GLOC, 'GRAFIX_CONTROL', OK, STATUS ) IF ( OK ) THEN CALL DAT_FIND( GLOC, 'GRAFIX_CONTROL', GCBLOC, STATUS ) CALL DAT_SIZE( GCBLOC, NBYTE, STATUS ) CALL DAT_MAP( GCBLOC, '_BYTE', 'READ', 1, NBYTE, : GCBPTR, STATUS ) CALL GCB_LOAD_SUB( %VAL(GCBPTR), %val(G_MEMPTR), STATUS ) CALL DAT_ANNUL( GCBLOC, STATUS ) * Read it ok? OK = (STATUS.EQ.SAI__OK) END IF ELSE CALL ERR_ANNUL( STATUS ) END IF * If not ok clear GCB in memory IF ( .NOT. OK ) THEN CALL GCB_CLEAR( STATUS ) END IF * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'GCB1_LOAD', STATUS ) END