FlagMSHandler.h

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00001 //# FlagMSHandler.h: This file contains the interface definition of the FlagMSHandler class.
00002 //#
00003 //#  CASA - Common Astronomy Software Applications (http://casa.nrao.edu/)
00004 //#  Copyright (C) Associated Universities, Inc. Washington DC, USA 2011, All rights reserved.
00005 //#  Copyright (C) European Southern Observatory, 2011, All rights reserved.
00006 //#
00007 //#  This library is free software; you can redistribute it and/or
00008 //#  modify it under the terms of the GNU Lesser General Public
00009 //#  License as published by the Free software Foundation; either
00010 //#  version 2.1 of the License, or (at your option) any later version.
00011 //#
00012 //#  This library is distributed in the hope that it will be useful,
00013 //#  but WITHOUT ANY WARRANTY, without even the implied warranty of
00014 //#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015 //#  Lesser General Public License for more details.
00016 //#
00017 //#  You should have received a copy of the GNU Lesser General Public
00018 //#  License along with this library; if not, write to the Free Software
00019 //#  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
00020 //#  MA 02111-1307  USA
00021 //# $Id: $
00022 
00023 #ifndef FlagMSHandler_H_
00024 #define FlagMSHandler_H_
00025 
00026 #include <flagging/Flagging/FlagDataHandler.h>
00027 #include <msvis/MSVis/ViFrequencySelection.h>
00028 
00029 namespace casa { //# NAMESPACE CASA - BEGIN
00030 
00031 // Flag Data Handler class definition
00032 class FlagMSHandler: public FlagDataHandler
00033 {
00034 
00035 public:
00036 
00037         // Default constructor
00038         // NOTE: Time interval 0 groups all time steps together in one chunk.
00039         FlagMSHandler(string msname, uShort iterationApproach = SUB_INTEGRATION, Double timeInterval = 0);
00040 
00041         // Default destructor
00042         ~FlagMSHandler();
00043 
00044         // Open Measurement Set
00045         bool open();
00046 
00047         // Close Measurement Set
00048         bool close();
00049 
00050         // Generate selected Measurement Set
00051         bool selectData();
00052 
00053         // Parse MSSelection expression
00054         bool parseExpression(MSSelection &parser);
00055 
00056         // Generate Visibility Iterator
00057         bool generateIterator();
00058 
00059         // Move to next chunk
00060         bool nextChunk();
00061 
00062         // Move to next buffer
00063         bool nextBuffer();
00064 
00065         // Write flag cube into MS
00066         bool flushFlags();
00067 
00068         // Provide table name (for flag version)
00069         String getTableName();
00070 
00071         // Check if a given column is available in the MS
00072         // (typically for checking existence of CORRECTED_DATA
00073         bool checkIfColumnExists(String column);
00074 
00075         // Signal true when a progress summary has to be printed
00076         bool summarySignal();
00077 
00078         // Get the MS PROCESSOR sub-table
00079         bool processorTable();
00080 
00081         // Get a Float visCube and return a Complex one
00082         Cube<Complex>& weightVisCube();
00083 
00084         Cube<Complex> weight_spectrum_p;
00085 
00086 private:
00087 
00088         // Mapping functions
00089         virtual void generateScanStartStopMap();
00090 
00091         // Swap MS to check what is the maximum RAM memory needed
00092         void preSweep();
00093 
00094         // Apply channel selection for asyn or normal iterator
00095         // NOTE: We always have to do this, even if there is no SPW:channel selection
00096         void applyChannelSelection(vi::VisibilityIterator2 *visIter);
00097 
00098 
00099         // Measurement set section
00100         MeasurementSet *selectedMeasurementSet_p;
00101         MeasurementSet *originalMeasurementSet_p;
00102 
00103         // RO Visibility Iterator
00104         vi::VisibilityIterator2 *preAveragingVI_p;
00105         vi::VisibilityIterator2 *visibilityIterator_p;
00106         vi::FrequencySelectionUsingChannels *channelSelector_p;
00107 
00108 };
00109 
00110 } //# NAMESPACE CASA - END
00111 
00112 #endif /* FlagMSHandler_H_ */
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