source: trunk/src/SDMath.h @ 234

Last change on this file since 234 was 234, checked in by kil064, 19 years ago

add binary table operation
add opacity
rework gain-elevation to handle polynomials
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 7.4 KB
Line 
1//#---------------------------------------------------------------------------
2//# SDMath.h: A collection of single dish mathematical operations
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
5//# ATNF
6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//#        Internet email: Malte.Marquarding@csiro.au
23//#        Postal address: Malte Marquarding,
24//#                        Australia Telescope National Facility,
25//#                        P.O. Box 76,
26//#                        Epping, NSW, 2121,
27//#                        AUSTRALIA
28//#
29//# $Id:
30//#---------------------------------------------------------------------------
31#ifndef SDMATH_H
32#define SDMATH_H
33
34#include <string>
35#include <vector>
36#include <casa/aips.h>
37#include <casa/Utilities/CountedPtr.h>
38#include "SDDefs.h"
39
40class casa::Table;
41
42namespace asap {
43
44class SDMemTable;
45
46class SDMath {
47
48 public:
49
50// Default constructor
51   SDMath();
52
53// Copy Constructor (copy semantics)
54   SDMath (const SDMath& other);
55
56// Assignment  (copy semantics)
57   SDMath &operator=(const SDMath& other);
58
59// Destructor
60   ~SDMath();
61
62// Quotient
63   casa::CountedPtr<SDMemTable> quotient(const casa::CountedPtr<SDMemTable>& on,
64                                         const casa::CountedPtr<SDMemTable>& off,
65                                         casa::Bool preserveContinuum=casa::True) const;
66
67// Simple binary Table operators. add, subtract, multiply, divide (what=0,1,2,3)
68   casa::CountedPtr<SDMemTable> simpleBinaryOperate (const casa::CountedPtr<SDMemTable>& left,
69                                                     const casa::CountedPtr<SDMemTable>& right,
70                                                     const casa::String& op) const;
71
72// Average in time
73   casa::CountedPtr<SDMemTable>  average(const casa::Block<casa::CountedPtr<SDMemTable> >& in,
74                                         const casa::Vector<casa::Bool>& mask,
75                                         casa::Bool scanAverage,
76                                         const casa::String& weightStr) const;
77//                                         casa::Bool alignVelocity) const;
78
79// Statistics. If row<0, all rows are done otherwise, just the
80// specified row.
81   std::vector<float> statistic(const casa::CountedPtr<SDMemTable>& in,
82                                const casa::Vector<casa::Bool>& mask,
83                                const casa::String& which, casa::Int row) const;
84
85// Bin up spectra
86   SDMemTable* bin(const SDMemTable& in, casa::Int width) const;
87
88// Smooth
89   SDMemTable* smooth (const SDMemTable& in, const casa::String& kernel,
90                       casa::Float width, casa::Bool doAll) const;
91
92// Flux conversion between Jansky and Kelvin
93   SDMemTable* convertFlux (const SDMemTable& in, casa::Float area,
94                            casa::Float eta, casa::Bool doAll) const;
95
96// Gain-elevation correction
97   SDMemTable* gainElevation (const SDMemTable& in, const casa::Vector<casa::Float>& coeffs,
98                              const casa::String& fileName,
99                              const casa::String& method, casa::Bool doAll) const;
100
101// Opacity correction
102   SDMemTable* opacity (const SDMemTable& in, casa::Float tau, casa::Bool doAll) const;
103
104// Simple mathematical operations.  what=0 (mul) or 1 (add)
105   SDMemTable* simpleOperate(const SDMemTable& in, casa::Float offset,
106                             casa::Bool doAll, casa::uInt what) const;
107
108// Average polarizations
109   SDMemTable* averagePol(const SDMemTable& in, const casa::Vector<casa::Bool>& mask) const;
110
111 private:
112
113// Weighting type for time averaging
114
115  enum WeightType {NONE,VAR,TSYS};
116
117// Function to use accumulate data during time averaging
118
119  void accumulate (casa::Double& timeSum, casa::Double& intSum, casa::Int& nAccum,
120                   casa::MaskedArray<casa::Float>& sum, casa::Array<casa::Float>& sumSq,
121                   casa::Array<casa::Float>& nPts, casa::Array<casa::Float>& tSysSum,
122                   const casa::Array<casa::Float>& tSys,  const casa::Array<casa::Float>& nInc,
123                   const casa::Vector<casa::Bool>& mask, casa::Double time, casa::Double interval,
124                   const casa::Block<casa::CountedPtr<SDMemTable> >& in,
125                   casa::uInt iTab, casa::uInt iRow, casa::uInt axis, casa::uInt nAxesSub,
126                   casa::Bool useMask, WeightType wtType) const;
127
128// Function to fill Scan Container when averaging in time
129
130  void fillSDC (SDContainer& sc, const casa::Array<casa::Bool>& mask,
131                const casa::Array<casa::Float>& data,
132                const casa::Array<casa::Float>& tSys,
133                casa::Int scanID, casa::Double timeStamp,
134                casa::Double interval, const casa::String& sourceName,
135                const casa::Vector<casa::uInt>& freqID) const;
136
137// Put the data and mask into the SDContainer
138   void putDataInSDC (SDContainer& sc, const casa::Array<casa::Float>& data,
139                      const casa::Array<casa::Bool>& mask) const;
140
141// Function to normalize data when averaging in time
142
143  void normalize (casa::MaskedArray<casa::Float>& data,
144                  const casa::Array<casa::Float>& sumSq,
145                  const casa::Array<casa::Float>& nPts,
146                  WeightType wtType, casa::Int axis, casa::Int nAxes) const;
147
148// Function to get the current cursor location
149   void getCursorLocation (casa::IPosition& start, casa::IPosition& end,
150                           const SDMemTable& in) const;
151
152// Convert weight string to enum value
153
154   void convertWeightString (WeightType& wt, const casa::String& weightStr) const;
155
156// Convert interpolation type string
157   void convertInterpString(casa::Int& type, const casa::String& interp) const;
158
159// Correct data from an ascii Table
160   void correctFromAsciiTable(SDMemTable* pTabOut, const SDMemTable& in,
161                              const casa::String& fileName,
162                              const casa::String& col0, const casa::String& col1,
163                              const casa::String& methodStr, casa::Bool doAll,
164                              const casa::Vector<casa::Float>& xOut) const;
165
166// Correct data from a Table
167   void correctFromTable(SDMemTable* pTabOut, const SDMemTable& in, const casa::Table& tTable,
168                         const casa::String& col0, const casa::String& col1,
169                         const casa::String& methodStr, casa::Bool doAll,
170                         const casa::Vector<casa::Float>& xOut) const;
171
172// Correct data from a Vector
173   void correctFromVector (SDMemTable* pTabOut, const SDMemTable& in,
174                           casa::Bool doAll, const casa::Vector<casa::Float>& factor) const;
175
176
177
178// Read ascii file into a Table
179
180   casa::Table readAsciiFile (const casa::String& fileName) const;
181};
182
183} // namespace
184
185#endif
Note: See TracBrowser for help on using the repository browser.