; CHANNEL ;--------------------------------------------------------------- ;! sets the spectral channel number ;# ADVERB SPECTRAL ;----------------------------------------------------------------------- ;; Copyright (C) 1995, 1998 ;; 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 ;----------------------------------------------------------------------- CHANNEL LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- CHANNEL Type: Adverb (scalar) Use: To set a single, usually spectral, "channel" number, where the definition of channel will depend on the particular verb or task. Null value: 0 => continuum, all, or 1 depending. Tasks: AVSPC.......Averages uv spectral channels; CHANNEL is number to average together CORER.......Calculates uv correlator statistics, flags bad ones. DFTPL.......Plots the DFT of a uv data set as a function of time for a single point in the sky. FRMAP.......Build an image using fringe-rate spectra; CHANNEL is the reference channel. GRIDR.......Grids single-dish data to an image. IMAGR.......Images and Cleans uv data; CHANNEL is the restart spectral channel. MX..........Images and Cleans uv data; CHANNEL is the restart spectral channel. PRTSD.......Prints single-dish data. PRTUV.......Prints uv data. UVADC.......Fourier transforms a Clean point model and corrects for geometric distortions and adds to a uv data set. UVDIF.......Prints differences between two uv data sets. UVFND.......Prints data found by various criteria. UVLSD.......Fits continuum to uv spectral data and divides by it; CHANNEL selects a channel at which the fit is output. UVLSF.......Fits continuum to uv spectral data and subtracts it; CHANNEL selects a channel at which the fit is output. UVMAP.......Fourier transforms uv data to make an image and beam. UVPRM.......Measures uv range, total flux, observing time, reference antenna from a uv database. UVPRT.......Prints uv data, optionally with calibration. UVSUB.......Subtracts/divides a model from/into a uv data base. WFCLN.......Images and Cleans uv data; CHANNEL is the restart spectral channel. ----------------------------------------------------------------