casa6
Public
Source
static const std::vector<casacore::Coordinate::Type> v { casacore::Coordinate::STOKES };//# Copyright (C) 1996,1997,1998,1999,2000,2001,2002//# Associated Universities, Inc. Washington DC, USA.//#//# This library is free software; you can redistribute it and/or modify it//# under the terms of the GNU Library General Public License as published by//# the Free Software Foundation; either version 2 of the License, or (at your//# option) any later version.//#//# This library 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 Library General Public//# License for more details.//#//# You should have received a copy of the GNU Library General Public License//# along with this library; 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: aips2-request@nrao.edu.//# Postal address: AIPS++ Project Office//# National Radio Astronomy Observatory//# 520 Edgemont Road//# Charlottesville, VA 22903-2475 USA//#namespace casa {// <summary>// Begin moving polarization tasks to ImageTask framework.// </summary>// <use visibility=export>// <prerequisite>// <li> <linkto class=casacore::ImageExpr>ImageExpr</linkto>// <li> <linkto class=casacore::ImageInterface>ImageInterface</linkto>// </prerequisite>// <etymology>// Polarimetric analysis of Images// </etymology>// <synopsis>// This class provides polarimetric image analysis capability.// It takes an image with a casacore::Stokes axis (some combination// of IQUV is needed) as its input.//// Many functions return casacore::ImageExpr objects. These are// read-only images.//// Sometimes the standard deviation of the noise is needed.// This is for debiasing polarized intensity images or working out// error images. By default it is worked out for you with a// clipped mean algorithm. However, you can provide sigma if you// know it accurately. It should be the standard deviation of the noise in// the absence of signal. You won't measure that very well from// casacore::Stokes I if it is dynamic range limited. Better to get it from // V or Q or U. When this class needs the standard deviation of