SUBROUTINE ADI2_LOCIHD( FID, IHDU, HID, STATUS ) *+ * Name: * ADI2_LOCIHD * Purpose: * Locate an HDU description by number * Language: * Starlink Fortran * Invocation: * CALL ADI2_LOCIHD( ID, IHDU, HID, STATUS ) * Description: * {routine_description} * Arguments: * FID = INTEGER (given) * ADI identifier of the FITSfile object * IHDU = INTEGER (given) * HDU number in the file (1 = primary HDU) * HID = INTEGER (returned) * ADI identifier to FITShdu object describing the HDU * 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: * ADI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/adi.html * Keywords: * package:adi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 14 Jun 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 * Arguments Given: INTEGER FID INTEGER IHDU * Arguments Returned: INTEGER HID * Status: INTEGER STATUS ! Global status * Local Variables: CHARACTER*20 HDUNAME CHARACTER*4 STR INTEGER HCID ! HDU container INTEGER NDIG ! Digits used in STR *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Locate file's HDU container CALL ADI_FIND( FID, 'Hdus', HCID, STATUS ) * Write property name so that ADI can do number -> HDU name mapping CALL CHR_ITOC( IHDU, STR, NDIG ) CALL ADI_CGET0C( FID, '.HDU_'//STR(:NDIG), HDUNAME, STATUS ) * Locate the HDU CALL ADI_FIND( HCID, HDUNAME, HID, STATUS ) * Release container CALL ADI_ERASE( HCID, STATUS ) * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'ADI2_LOCIHD', STATUS ) END