; CLBOX ;--------------------------------------------------------------- ;! specifies subarrays of an image for Clean to search ;# ADVERB IMAGING ;----------------------------------------------------------------------- ;; Copyright (C) 1995-1997 ;; Associated Universities, Inc. Washington DC, USA. ;; ;; This program is free software; you can redistribute it and/or ;; modify it under the terms of the GNU General Public License as ;; published by the Free Software Foundation; either version 2 of ;; the License, or (at your option) any later version. ;; ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public ;; License along with this program; if not, write to the Free ;; Software Foundation, Inc., 675 Massachusetts Ave, Cambridge, ;; MA 02139, USA. ;; ;; Correspondence concerning AIPS should be addressed as follows: ;; Internet email: aipsmail@nrao.edu. ;; Postal address: AIPS Project Office ;; National Radio Astronomy Observatory ;; 520 Edgemont Road ;; Charlottesville, VA 22903-2475 USA ;----------------------------------------------------------------------- CLBOX LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- CLBOX Type: Adverb (Real(4,50)) Use: An array containing 50 sets of of four numbers that are normally used to specify areas within which model sources may be found (e.g. point sources found by Clean). The number of such areas is normally given by the value of the NBOXES adverb. All tasks that use the CLBOX adverb support the definition of rectangular areas in which the four numbers are the x and y pixel coordinates of the bottom-left corner followed by the x and y coordinates of the top-right corner in pixels. IMAGR, SCMAP and WFCLN also support the definition of circular areas by setting: a circular area is specified by setting the first number to -1, the second to the radius of the circle on pixels and the third and fourth to the x and y pixel coordinates of the centre. Null value: 0 Null value assignment varies with the verb or task. ----------------------------------------------------------------