source: trunk/src/SDMath.h@ 241

Last change on this file since 241 was 234, checked in by kil064, 20 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
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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
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