/usr/include/casacore/meas/MeasUDF/DirectionUDF.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | //# DirectionUDF.h: TaQL UDFs for Direction conversions
//# Copyright (C) 2011
//# 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
//#
//# $Id$
#ifndef MEAS_DIRECTIONUDF_H
#define MEAS_DIRECTIONUDF_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/meas/MeasUDF/DirectionEngine.h>
#include <casacore/tables/TaQL/UDFBase.h>
#include <casacore/tables/TaQL/ExprNode.h>
#include <casacore/measures/Measures/MDirection.h>
#include <casacore/measures/Measures/MPosition.h>
#include <casacore/measures/Measures/MEpoch.h>
#include <casacore/measures/Measures/MCDirection.h>
#include <casacore/measures/Measures/MeasConvert.h>
namespace casacore {
// <summary>
// TaQL UDFs for Direction conversions.
// </summary>
// <use visibility=export>
// <reviewed reviewer="" date="" tests="tMeas.cc">
// </reviewed>
// <prerequisite>
//# Classes you should understand before using this one.
// <li> UDFBase
// </prerequisite>
// <synopsis>
// DirectionUDF defines UDFs (user defined functions) that can be used in TaQL
// to convert Measures for directions.
// Special functions exist to convert to hourangle and azimuth/elevation.
// In this way such derived values appear to be ordinary TaQL functions.
//
// A function is called like:
// <srcblock>
// meas.dir (toref, dir, time, pos)
// meas.dir (toref, dir, time, pos)
// For example,
// meas.dir ('B1950', [2rad,1rad])
// meas.dir ('B1950', [[2rad,1rad], 'J2000'])
// meas.dir ('APP', 'MOON', TIME, [[5d12m, 52deg, 11m], 'WGS84'])
// meas.dir ('APP', 'MOON', TIME, POSITION)
// Or
// meas.dir (toref, fromref, dir, pos, time)
// </srcblock>
// <ul>
// <li>
// <src>toref</src> is a single constant string.
// <li>
// <src>dir</src> can have various value types. A single numeric array is
// a series of RA,DEC in J2000. If given as a set, the last argument of the
// set can be the reference types of the values in the set. The values can
// be strings (indicating planetary objects) or value pairs giving lon,lat.
// The default reference type is J2000.
// </ul>
// All functions have data type double and unit radian.
// </synopsis>
// <motivation>
// It makes it possible to handle measures in TaQL.
// </motivation>
class DirectionUDF: public UDFBase
{
public:
// Define the possible function types.
enum FuncType {DIRECTION, DIRCOS, HADEC, AZEL, APP, J2000, B1950,
ECLIPTIC, GALACTIC, SUPERGALACTIC, ITRF};
// Create for the given function type.
// The Bools tell if rise/set times have to be calculated.
explicit DirectionUDF (FuncType, Bool riseSet=False);
// Function to create an object.
static UDFBase* makeDIR (const String&);
static UDFBase* makeDIRCOS (const String&);
static UDFBase* makeHADEC (const String&);
static UDFBase* makeAZEL (const String&);
static UDFBase* makeAPP (const String&);
static UDFBase* makeJ2000 (const String&);
static UDFBase* makeB1950 (const String&);
static UDFBase* makeECL (const String&);
static UDFBase* makeGAL (const String&);
static UDFBase* makeSGAL (const String&);
static UDFBase* makeITRF (const String&);
static UDFBase* makeRISESET (const String&);
// Setup the object.
virtual void setup (const Table&, const TaQLStyle&);
// Get the value.
virtual Double getDouble (const TableExprId& id);
virtual MArray<Double> getArrayDouble (const TableExprId& id);
virtual MArray<MVTime> getArrayDate (const TableExprId& id);
private:
//# Data members.
DirectionEngine itsEngine;
EpochEngine itsEpochEngine;
PositionEngine itsPositionEngine;
FuncType itsType;
MDirection::Types itsRefType;
Bool itsRiseSet; //# True = calculate rise/set time
};
} //end namespace
#endif
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