; REWGT ;--------------------------------------------------------------- ;! modifies UV data re-scaling the weights only ;# Task UV CALIBRATION ;----------------------------------------------------------------------- ;; Copyright (C) 2010-2011, 2014 ;; 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 ;----------------------------------------------------------------------- REWGT LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC REWGT Scales uv data weights only INNAME Input UV file name (name) INCLASS Input UV file name (class) INSEQ 0.0 9999.0 Input UV file name (seq. #) INDISK 0.0 9.0 Input UV file disk unit # OUTNAME Output UV file name (name) OUTCLASS Output UV file name (class) OUTSEQ -1.0 9999.0 Output UV file name (seq. #) OUTDISK 0.0 9.0 Output UV file disk unit #. OPTYPE 'SUBA', 'IF', 'FILE' PBSIZE Scaling factors to use SUBARRAY 0.0 Apply IF scaling only to this subarray 0 -> all BIF 0.0 Apply subarray scaling only to this IF 0 -> all INTEXT Text file e.g. from RFLAG FQCENTER >= 0 -> center frequency axis ---------------------------------------------------------------- REWGT Task: This task will rescale uv data weights by a user-supplied factor. The factor may be different for different subarrays or different IFs. See task REAMP to scale uv data amplitudes with corresponding changes to the weights REWGT can also read a text file with weight factors in it. That file can be written by RFLAG and is in the form used with BOXFILE in IMAGR. Adverbs: INNAME.....Input UV file name (name). Standard defaults. INCLASS....Input UV file name (class). Standard defaults. INSEQ......Input UV file name (seq. #). 0 => highest. INDISK.....Disk drive # of input UV file. 0 => any. OUTNAME....Output UV file name (name). Standard defaults. OUTCLASS...Output UV file name (class). Standard defaults. OUTSEQ.....Output UV file name (seq. #). 0 => highest unique OUTDISK....Disk drive # of output UV file. 0 => highest with space for the file. OPTYPE.....'SUBA' scaling array applies to subarrays 1-64 'FILE' scaling found in text file INTEXT other scaling array applies to IFs 1-64 PBSIZE.....Scaling array: multiply subarray n by PBSIZE(n) on OPTYPE 'SUBA', else multiply IF n by PBSIZE(n). SUBARRAY...Limit scaling to specified subarray on OPTYPE 'FILE' and other. All subarrays are copied. 0 -> all subarrays are scaled. BIF........Limit scaling to IF BIF on optype 'SUBA'. 0 -> all and all IFs are copied anyway. INTEXT.....Weight array text file. Each line has the form W weight chan IF with the W in column 1. IF blank or 0 means all IFs. Channels not specified get scaling factor 1.0. FQCENTER,..> 0 => Change frequency axis reference pixel to Nchan / 2 + 1 else => do not change reference pixel ----------------------------------------------------------------