[300] | 1 | // ----------------------------------------------------------------------- |
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| 2 | // detection.cc : Member functions for the Detection class. |
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| 3 | // ----------------------------------------------------------------------- |
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| 4 | // Copyright (C) 2006, Matthew Whiting, ATNF |
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| 5 | // |
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| 6 | // This program is free software; you can redistribute it and/or modify it |
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| 7 | // under the terms of the GNU General Public License as published by the |
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| 8 | // Free Software Foundation; either version 2 of the License, or (at your |
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| 9 | // option) any later version. |
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| 10 | // |
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| 11 | // Duchamp is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | // for more details. |
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| 15 | // |
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| 16 | // You should have received a copy of the GNU General Public License |
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| 17 | // along with Duchamp; if not, write to the Free Software Foundation, |
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| 18 | // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
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| 19 | // |
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| 20 | // Correspondence concerning Duchamp may be directed to: |
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| 21 | // Internet email: Matthew.Whiting [at] atnf.csiro.au |
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| 22 | // Postal address: Dr. Matthew Whiting |
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| 23 | // Australia Telescope National Facility, CSIRO |
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| 24 | // PO Box 76 |
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| 25 | // Epping NSW 1710 |
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| 26 | // AUSTRALIA |
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| 27 | // ----------------------------------------------------------------------- |
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[3] | 28 | #include <iostream> |
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| 29 | #include <iomanip> |
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| 30 | #include <vector> |
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| 31 | #include <string> |
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[394] | 32 | #include <wcslib/wcs.h> |
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[69] | 33 | #include <math.h> |
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[393] | 34 | #include <duchamp/duchamp.hh> |
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| 35 | #include <duchamp/param.hh> |
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| 36 | #include <duchamp/fitsHeader.hh> |
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| 37 | #include <duchamp/Utils/utils.hh> |
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| 38 | #include <duchamp/PixelMap/Voxel.hh> |
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| 39 | #include <duchamp/PixelMap/Object3D.hh> |
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| 40 | #include <duchamp/Detection/detection.hh> |
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[463] | 41 | #include <duchamp/Cubes/cubeUtils.hh> |
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[570] | 42 | #include <duchamp/Detection/columns.hh> |
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[3] | 43 | |
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[258] | 44 | using namespace PixelInfo; |
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| 45 | |
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[378] | 46 | namespace duchamp |
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[365] | 47 | { |
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| 48 | |
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[570] | 49 | void Detection::defaultDetection() |
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[378] | 50 | { |
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[570] | 51 | this->xSubOffset = 0; |
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| 52 | this->ySubOffset = 0; |
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| 53 | this->zSubOffset = 0; |
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| 54 | this->totalFlux = 0.; |
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| 55 | this->peakFlux = 0.; |
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| 56 | this->intFlux = 0.; |
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| 57 | this->xpeak = 0; |
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| 58 | this->ypeak = 0; |
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| 59 | this->zpeak = 0; |
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| 60 | this->peakSNR = 0.; |
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| 61 | this->xCentroid = 0.; |
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| 62 | this->yCentroid = 0.; |
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| 63 | this->zCentroid = 0.; |
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| 64 | this->centreType="centroid"; |
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[378] | 65 | this->negSource = false; |
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| 66 | this->flagText=""; |
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[468] | 67 | this->id = -1; |
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[570] | 68 | this->name = ""; |
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| 69 | this->flagWCS=false; |
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| 70 | this->specOK = true; |
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| 71 | this->raS = ""; |
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| 72 | this->decS = ""; |
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| 73 | this->ra = 0.; |
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| 74 | this->dec = 0.; |
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| 75 | this->raWidth = 0.; |
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| 76 | this->decWidth = 0.; |
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| 77 | this->majorAxis = 0.; |
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| 78 | this->minorAxis = 0.; |
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| 79 | this->posang = 0.; |
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| 80 | this->specUnits = ""; |
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| 81 | this->fluxUnits = ""; |
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| 82 | this->intFluxUnits = ""; |
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| 83 | this->lngtype = "RA"; |
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| 84 | this->lattype = "DEC"; |
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| 85 | this->vel = 0.; |
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| 86 | this->velWidth = 0.; |
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| 87 | this->velMin = 0.; |
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| 88 | this->velMax = 0.; |
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| 89 | this->w20 = 0.; |
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| 90 | this->v20min = 0.; |
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| 91 | this->v20max = 0.; |
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| 92 | this->w50 = 0.; |
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| 93 | this->v50min = 0.; |
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| 94 | this->v50max = 0.; |
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| 95 | this->posPrec = Column::prPOS; |
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| 96 | this->xyzPrec = Column::prXYZ; |
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| 97 | this->fintPrec = Column::prFLUX; |
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| 98 | this->fpeakPrec = Column::prFLUX; |
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| 99 | this->velPrec = Column::prVEL; |
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| 100 | this->snrPrec = Column::prSNR; |
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[378] | 101 | } |
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[218] | 102 | |
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[570] | 103 | Detection::Detection(): |
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| 104 | Object3D() |
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[378] | 105 | { |
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[570] | 106 | this->defaultDetection(); |
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| 107 | } |
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| 108 | |
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| 109 | Detection::Detection(const Object3D& o): |
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| 110 | Object3D(o) |
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| 111 | { |
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| 112 | this->defaultDetection(); |
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| 113 | } |
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| 114 | |
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| 115 | Detection::Detection(const Detection& d): |
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| 116 | Object3D(d) |
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| 117 | { |
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[378] | 118 | operator=(d); |
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| 119 | } |
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[218] | 120 | |
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[378] | 121 | Detection& Detection::operator= (const Detection& d) |
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| 122 | { |
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[570] | 123 | ((Object3D &) *this) = d; |
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[378] | 124 | this->xSubOffset = d.xSubOffset; |
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| 125 | this->ySubOffset = d.ySubOffset; |
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| 126 | this->zSubOffset = d.zSubOffset; |
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| 127 | this->totalFlux = d.totalFlux; |
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[461] | 128 | this->intFlux = d.intFlux; |
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[378] | 129 | this->peakFlux = d.peakFlux; |
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| 130 | this->xpeak = d.xpeak; |
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| 131 | this->ypeak = d.ypeak; |
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| 132 | this->zpeak = d.zpeak; |
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| 133 | this->peakSNR = d.peakSNR; |
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| 134 | this->xCentroid = d.xCentroid; |
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| 135 | this->yCentroid = d.yCentroid; |
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| 136 | this->zCentroid = d.zCentroid; |
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| 137 | this->centreType = d.centreType; |
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| 138 | this->negSource = d.negSource; |
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| 139 | this->flagText = d.flagText; |
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| 140 | this->id = d.id; |
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| 141 | this->name = d.name; |
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| 142 | this->flagWCS = d.flagWCS; |
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| 143 | this->specOK = d.specOK; |
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| 144 | this->raS = d.raS; |
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| 145 | this->decS = d.decS; |
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| 146 | this->ra = d.ra; |
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[461] | 147 | this->dec = d.dec; |
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| 148 | this->raWidth = d.raWidth; |
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[378] | 149 | this->decWidth = d.decWidth; |
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[473] | 150 | this->majorAxis = d.majorAxis; |
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| 151 | this->minorAxis = d.minorAxis; |
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| 152 | this->posang = d.posang; |
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[378] | 153 | this->specUnits = d.specUnits; |
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| 154 | this->fluxUnits = d.fluxUnits; |
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| 155 | this->intFluxUnits = d.intFluxUnits; |
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[461] | 156 | this->lngtype = d.lngtype; |
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| 157 | this->lattype = d.lattype; |
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[378] | 158 | this->vel = d.vel; |
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| 159 | this->velWidth = d.velWidth; |
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| 160 | this->velMin = d.velMin; |
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| 161 | this->velMax = d.velMax; |
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[463] | 162 | this->w20 = d.w20; |
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| 163 | this->v20min = d.v20min; |
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| 164 | this->v20max = d.v20max; |
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| 165 | this->w50 = d.w50; |
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| 166 | this->v50min = d.v50min; |
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| 167 | this->v50max = d.v50max; |
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[378] | 168 | this->posPrec = d.posPrec; |
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| 169 | this->xyzPrec = d.xyzPrec; |
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| 170 | this->fintPrec = d.fintPrec; |
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| 171 | this->fpeakPrec = d.fpeakPrec; |
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[461] | 172 | this->velPrec = d.velPrec; |
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[378] | 173 | this->snrPrec = d.snrPrec; |
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| 174 | return *this; |
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| 175 | } |
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[3] | 176 | |
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[378] | 177 | //-------------------------------------------------------------------- |
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[570] | 178 | float Detection::getXcentre() |
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| 179 | { |
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| 180 | if(this->centreType=="peak") return this->xpeak; |
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| 181 | else if(this->centreType=="average") return this->getXaverage(); |
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| 182 | else return this->xCentroid; |
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| 183 | } |
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[258] | 184 | |
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[570] | 185 | float Detection::getYcentre() |
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| 186 | { |
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| 187 | if(this->centreType=="peak") return this->ypeak; |
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| 188 | else if(this->centreType=="average") return this->getYaverage(); |
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| 189 | else return this->yCentroid; |
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| 190 | } |
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| 191 | |
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| 192 | float Detection::getZcentre() |
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| 193 | { |
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| 194 | if(this->centreType=="peak") return this->zpeak; |
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| 195 | else if(this->centreType=="average") return this->getZaverage(); |
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| 196 | else return this->zCentroid; |
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| 197 | } |
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| 198 | |
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| 199 | //-------------------------------------------------------------------- |
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| 200 | |
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[417] | 201 | bool Detection::voxelListsMatch(std::vector<Voxel> voxelList) |
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| 202 | { |
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[528] | 203 | /// @details |
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| 204 | /// A test to see whether there is a 1-1 correspondence between |
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| 205 | /// the given list of Voxels and the voxel positions contained in |
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| 206 | /// this Detection's pixel list. No testing of the fluxes of the |
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| 207 | /// Voxels is done. |
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| 208 | /// |
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| 209 | /// \param voxelList The std::vector list of Voxels to be tested. |
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[417] | 210 | |
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| 211 | bool listsMatch = true; |
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| 212 | // compare sizes |
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| 213 | listsMatch = listsMatch && (voxelList.size() == this->getSize()); |
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| 214 | if(!listsMatch) return listsMatch; |
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| 215 | |
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[463] | 216 | // make sure all Detection pixels are in voxel list |
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| 217 | listsMatch = listsMatch && this->voxelListCovered(voxelList); |
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| 218 | |
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[417] | 219 | // make sure all voxels are in Detection |
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[541] | 220 | for(unsigned int i=0;i<voxelList.size();i++) |
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[570] | 221 | listsMatch = listsMatch && this->isInObject(voxelList[i]); |
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[463] | 222 | |
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| 223 | return listsMatch; |
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| 224 | |
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| 225 | } |
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| 226 | //-------------------------------------------------------------------- |
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| 227 | |
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| 228 | bool Detection::voxelListCovered(std::vector<Voxel> voxelList) |
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| 229 | { |
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[528] | 230 | /// @details |
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| 231 | /// A test to see whether the given list of Voxels contains each |
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| 232 | /// position in this Detection's pixel list. It does not look for |
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| 233 | /// a 1-1 correspondence: the given list can be a super-set of the |
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| 234 | /// Detection. No testing of the fluxes of the Voxels is done. |
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| 235 | /// |
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| 236 | /// \param voxelList The std::vector list of Voxels to be tested. |
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[463] | 237 | |
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| 238 | bool listsMatch = true; |
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| 239 | |
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[417] | 240 | // make sure all Detection pixels are in voxel list |
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[570] | 241 | unsigned int v1=0; |
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| 242 | std::vector<Voxel> detpixlist = this->getPixelSet(); |
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| 243 | while(listsMatch && v1<detpixlist.size()){ |
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[417] | 244 | bool inList = false; |
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[541] | 245 | unsigned int v2=0; |
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[417] | 246 | while(!inList && v2<voxelList.size()){ |
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[570] | 247 | inList = inList || detpixlist[v1].match(voxelList[v2]); |
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[417] | 248 | v2++; |
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| 249 | } |
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| 250 | listsMatch = listsMatch && inList; |
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[418] | 251 | v1++; |
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[417] | 252 | } |
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| 253 | |
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| 254 | return listsMatch; |
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| 255 | |
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| 256 | } |
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| 257 | //-------------------------------------------------------------------- |
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| 258 | |
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| 259 | void Detection::calcFluxes(std::vector<Voxel> voxelList) |
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| 260 | { |
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[528] | 261 | /// @details |
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| 262 | /// A function that calculates total & peak fluxes (and the location |
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| 263 | /// of the peak flux) for a Detection. |
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| 264 | /// |
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| 265 | /// \param fluxArray The array of flux values to calculate the |
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| 266 | /// flux parameters from. |
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| 267 | /// \param dim The dimensions of the flux array. |
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[417] | 268 | |
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| 269 | this->totalFlux = this->peakFlux = 0; |
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| 270 | this->xCentroid = this->yCentroid = this->zCentroid = 0.; |
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| 271 | |
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| 272 | // first check that the voxel list and the Detection's pixel list |
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| 273 | // have a 1-1 correspondence |
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| 274 | |
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[463] | 275 | if(!this->voxelListCovered(voxelList)){ |
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[417] | 276 | duchampError("Detection::calcFluxes","Voxel list provided does not match"); |
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| 277 | return; |
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| 278 | } |
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| 279 | |
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[541] | 280 | for(unsigned int i=0;i<voxelList.size();i++) { |
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[570] | 281 | if(this->isInObject(voxelList[i])){ |
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[463] | 282 | long x = voxelList[i].getX(); |
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| 283 | long y = voxelList[i].getY(); |
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| 284 | long z = voxelList[i].getZ(); |
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| 285 | float f = voxelList[i].getF(); |
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| 286 | this->totalFlux += f; |
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| 287 | this->xCentroid += x*f; |
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| 288 | this->yCentroid += y*f; |
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| 289 | this->zCentroid += z*f; |
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| 290 | if( (i==0) || //first time round |
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| 291 | (this->negSource&&(f<this->peakFlux)) || |
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| 292 | (!this->negSource&&(f>this->peakFlux)) ) |
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| 293 | { |
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| 294 | this->peakFlux = f; |
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| 295 | this->xpeak = x; |
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| 296 | this->ypeak = y; |
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| 297 | this->zpeak = z; |
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| 298 | } |
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| 299 | } |
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[417] | 300 | } |
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| 301 | |
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| 302 | this->xCentroid /= this->totalFlux; |
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| 303 | this->yCentroid /= this->totalFlux; |
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| 304 | this->zCentroid /= this->totalFlux; |
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| 305 | } |
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| 306 | //-------------------------------------------------------------------- |
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| 307 | |
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[378] | 308 | void Detection::calcFluxes(float *fluxArray, long *dim) |
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| 309 | { |
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[528] | 310 | /// @details |
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| 311 | /// A function that calculates total & peak fluxes (and the location |
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| 312 | /// of the peak flux) for a Detection. |
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| 313 | /// |
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| 314 | /// \param fluxArray The array of flux values to calculate the |
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| 315 | /// flux parameters from. |
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| 316 | /// \param dim The dimensions of the flux array. |
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[258] | 317 | |
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[378] | 318 | this->totalFlux = this->peakFlux = 0; |
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| 319 | this->xCentroid = this->yCentroid = this->zCentroid = 0.; |
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| 320 | |
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[570] | 321 | std::vector<Voxel> voxList = this->getPixelSet(); |
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[473] | 322 | std::vector<Voxel>::iterator vox=voxList.begin(); |
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| 323 | for(;vox<voxList.end();vox++){ |
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[378] | 324 | |
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[473] | 325 | long x=vox->getX(); |
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| 326 | long y=vox->getY(); |
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| 327 | long z=vox->getZ(); |
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| 328 | long ind = vox->arrayIndex(dim); |
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| 329 | float f = fluxArray[ind]; |
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| 330 | this->totalFlux += f; |
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| 331 | this->xCentroid += x*f; |
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| 332 | this->yCentroid += y*f; |
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| 333 | this->zCentroid += z*f; |
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| 334 | if( (vox==voxList.begin()) || |
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| 335 | (this->negSource&&(f<this->peakFlux)) || |
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| 336 | (!this->negSource&&(f>this->peakFlux)) ) |
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| 337 | { |
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| 338 | this->peakFlux = f; |
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| 339 | this->xpeak = x; |
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| 340 | this->ypeak = y; |
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| 341 | this->zpeak = z; |
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[378] | 342 | } |
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[473] | 343 | |
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[45] | 344 | } |
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[378] | 345 | |
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| 346 | this->xCentroid /= this->totalFlux; |
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| 347 | this->yCentroid /= this->totalFlux; |
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| 348 | this->zCentroid /= this->totalFlux; |
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[263] | 349 | } |
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[378] | 350 | //-------------------------------------------------------------------- |
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[263] | 351 | |
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[417] | 352 | void Detection::calcWCSparams(FitsHeader &head) |
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[378] | 353 | { |
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[528] | 354 | /// @details |
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| 355 | /// Use the input wcs to calculate the position and velocity |
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| 356 | /// information for the Detection. |
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| 357 | /// Quantities calculated: |
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| 358 | /// <ul><li> RA: ra [deg], ra (string), ra width. |
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| 359 | /// <li> Dec: dec [deg], dec (string), dec width. |
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| 360 | /// <li> Vel: vel [km/s], min & max vel, vel width. |
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| 361 | /// <li> coord type for all three axes, nuRest, |
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| 362 | /// <li> name (IAU-style, in equatorial or Galactic) |
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| 363 | /// </ul> |
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| 364 | /// |
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| 365 | /// Note that the regular parameters are NOT recalculated! |
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| 366 | /// |
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| 367 | /// \param head FitsHeader object that contains the WCS information. |
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[3] | 368 | |
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[378] | 369 | if(head.isWCS()){ |
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[3] | 370 | |
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[378] | 371 | double *pixcrd = new double[15]; |
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| 372 | double *world = new double[15]; |
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| 373 | /* |
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| 374 | define a five-point array in 3D: |
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| 375 | (x,y,z), (x,y,z1), (x,y,z2), (x1,y1,z), (x2,y2,z) |
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| 376 | [note: x = central point, x1 = minimum x, x2 = maximum x etc.] |
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| 377 | and convert to world coordinates. |
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| 378 | */ |
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| 379 | pixcrd[0] = pixcrd[3] = pixcrd[6] = this->getXcentre(); |
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| 380 | pixcrd[9] = this->getXmin()-0.5; |
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| 381 | pixcrd[12] = this->getXmax()+0.5; |
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| 382 | pixcrd[1] = pixcrd[4] = pixcrd[7] = this->getYcentre(); |
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| 383 | pixcrd[10] = this->getYmin()-0.5; |
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| 384 | pixcrd[13] = this->getYmax()+0.5; |
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| 385 | pixcrd[2] = pixcrd[11] = pixcrd[14] = this->getZcentre(); |
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| 386 | pixcrd[5] = this->getZmin(); |
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| 387 | pixcrd[8] = this->getZmax(); |
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| 388 | int flag = head.pixToWCS(pixcrd, world, 5); |
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| 389 | delete [] pixcrd; |
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| 390 | if(flag!=0) duchampError("calcWCSparams", |
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| 391 | "Error in calculating the WCS for this object.\n"); |
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| 392 | else{ |
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[60] | 393 | |
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[378] | 394 | // world now has the WCS coords for the five points |
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| 395 | // -- use this to work out WCS params |
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[22] | 396 | |
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[378] | 397 | this->specOK = head.canUseThirdAxis(); |
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| 398 | this->lngtype = head.WCS().lngtyp; |
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| 399 | this->lattype = head.WCS().lattyp; |
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| 400 | this->specUnits = head.getSpectralUnits(); |
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| 401 | this->fluxUnits = head.getFluxUnits(); |
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| 402 | // if fluxUnits are eg. Jy/beam, make intFluxUnits = Jy km/s |
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| 403 | this->intFluxUnits = head.getIntFluxUnits(); |
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| 404 | this->ra = world[0]; |
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| 405 | this->dec = world[1]; |
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| 406 | this->raS = decToDMS(this->ra, this->lngtype); |
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| 407 | this->decS = decToDMS(this->dec,this->lattype); |
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| 408 | this->raWidth = angularSeparation(world[9],world[1], |
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| 409 | world[12],world[1]) * 60.; |
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| 410 | this->decWidth = angularSeparation(world[0],world[10], |
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| 411 | world[0],world[13]) * 60.; |
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[473] | 412 | |
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[570] | 413 | Object2D spatMap = this->getSpatialMap(); |
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[473] | 414 | std::pair<double,double> axes = spatMap.getPrincipleAxes(); |
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| 415 | this->majorAxis = std::max(axes.first,axes.second) * head.getAvPixScale(); |
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| 416 | this->minorAxis = std::min(axes.first,axes.second) * head.getAvPixScale(); |
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| 417 | this->posang = spatMap.getPositionAngle() * 180. / M_PI; |
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| 418 | |
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[378] | 419 | this->name = head.getIAUName(this->ra, this->dec); |
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| 420 | this->vel = head.specToVel(world[2]); |
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| 421 | this->velMin = head.specToVel(world[5]); |
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| 422 | this->velMax = head.specToVel(world[8]); |
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| 423 | this->velWidth = fabs(this->velMax - this->velMin); |
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[3] | 424 | |
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[378] | 425 | this->flagWCS = true; |
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| 426 | } |
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| 427 | delete [] world; |
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| 428 | |
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[270] | 429 | } |
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[103] | 430 | } |
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[378] | 431 | //-------------------------------------------------------------------- |
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[3] | 432 | |
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[417] | 433 | void Detection::calcIntegFlux(std::vector<Voxel> voxelList, FitsHeader &head) |
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| 434 | { |
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[528] | 435 | /// @details |
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| 436 | /// Uses the input WCS to calculate the velocity-integrated flux, |
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| 437 | /// putting velocity in units of km/s. |
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| 438 | /// The fluxes used are taken from the Voxels, rather than an |
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| 439 | /// array of flux values. |
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| 440 | /// Integrates over full spatial and velocity range as given |
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| 441 | /// by the extrema calculated by calcWCSparams. |
---|
| 442 | /// |
---|
| 443 | /// If the flux units end in "/beam" (eg. Jy/beam), then the flux is |
---|
| 444 | /// corrected by the beam size (in pixels). This is done by |
---|
| 445 | /// multiplying the integrated flux by the number of spatial pixels, |
---|
| 446 | /// and dividing by the beam size in pixels (e.g. Jy/beam * pix / |
---|
| 447 | /// pix/beam --> Jy) |
---|
| 448 | /// |
---|
| 449 | /// \param voxelList The list of Voxels with flux information |
---|
| 450 | /// \param head FitsHeader object that contains the WCS information. |
---|
[417] | 451 | |
---|
[463] | 452 | const int border = 1; |
---|
| 453 | |
---|
| 454 | if(!this->voxelListCovered(voxelList)){ |
---|
[417] | 455 | duchampError("Detection::calcIntegFlux","Voxel list provided does not match"); |
---|
| 456 | return; |
---|
| 457 | } |
---|
| 458 | |
---|
[513] | 459 | if(!head.is2D()){ |
---|
[417] | 460 | |
---|
| 461 | // include one pixel either side in each direction |
---|
[463] | 462 | long xsize = (this->getXmax()-this->getXmin()+border*2+1); |
---|
| 463 | long ysize = (this->getYmax()-this->getYmin()+border*2+1); |
---|
| 464 | long zsize = (this->getZmax()-this->getZmin()+border*2+1); |
---|
| 465 | long size = xsize*ysize*zsize; |
---|
[473] | 466 | std::vector <bool> isObj(size,false); |
---|
[463] | 467 | double *localFlux = new double[size]; |
---|
| 468 | for(int i=0;i<size;i++) localFlux[i]=0.; |
---|
[417] | 469 | |
---|
[541] | 470 | for(unsigned int i=0;i<voxelList.size();i++){ |
---|
[570] | 471 | if(this->isInObject(voxelList[i])){ |
---|
[463] | 472 | long x = voxelList[i].getX(); |
---|
| 473 | long y = voxelList[i].getY(); |
---|
| 474 | long z = voxelList[i].getZ(); |
---|
| 475 | long pos = (x-this->getXmin()+border) + (y-this->getYmin()+border)*xsize |
---|
| 476 | + (z-this->getZmin()+border)*xsize*ysize; |
---|
| 477 | localFlux[pos] = voxelList[i].getF(); |
---|
| 478 | isObj[pos] = true; |
---|
| 479 | } |
---|
[417] | 480 | } |
---|
| 481 | |
---|
| 482 | // work out the WCS coords for each pixel |
---|
[463] | 483 | double *world = new double[size]; |
---|
[417] | 484 | double xpt,ypt,zpt; |
---|
| 485 | for(int i=0;i<xsize*ysize*zsize;i++){ |
---|
[463] | 486 | xpt = double( this->getXmin() - border + i%xsize ); |
---|
| 487 | ypt = double( this->getYmin() - border + (i/xsize)%ysize ); |
---|
| 488 | zpt = double( this->getZmin() - border + i/(xsize*ysize) ); |
---|
[417] | 489 | world[i] = head.pixToVel(xpt,ypt,zpt); |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | double integrated = 0.; |
---|
| 493 | for(int pix=0; pix<xsize*ysize; pix++){ // loop over each spatial pixel. |
---|
| 494 | for(int z=0; z<zsize; z++){ |
---|
| 495 | int pos = z*xsize*ysize + pix; |
---|
| 496 | if(isObj[pos]){ // if it's an object pixel... |
---|
| 497 | double deltaVel; |
---|
| 498 | if(z==0) |
---|
| 499 | deltaVel = (world[pos+xsize*ysize] - world[pos]); |
---|
| 500 | else if(z==(zsize-1)) |
---|
| 501 | deltaVel = (world[pos] - world[pos-xsize*ysize]); |
---|
| 502 | else |
---|
| 503 | deltaVel = (world[pos+xsize*ysize] - world[pos-xsize*ysize]) / 2.; |
---|
| 504 | integrated += localFlux[pos] * fabs(deltaVel); |
---|
| 505 | } |
---|
| 506 | } |
---|
| 507 | } |
---|
| 508 | this->intFlux = integrated; |
---|
| 509 | |
---|
| 510 | delete [] world; |
---|
| 511 | delete [] localFlux; |
---|
| 512 | |
---|
[464] | 513 | calcVelWidths(voxelList,head); |
---|
| 514 | |
---|
[417] | 515 | } |
---|
| 516 | else // in this case there is just a 2D image. |
---|
| 517 | this->intFlux = this->totalFlux; |
---|
| 518 | |
---|
| 519 | if(head.isWCS()){ |
---|
| 520 | // correct for the beam size if the flux units string ends in "/beam" |
---|
[429] | 521 | if(head.needBeamSize()) this->intFlux /= head.getBeamSize(); |
---|
[417] | 522 | } |
---|
| 523 | |
---|
| 524 | } |
---|
| 525 | //-------------------------------------------------------------------- |
---|
| 526 | |
---|
[378] | 527 | void Detection::calcIntegFlux(float *fluxArray, long *dim, FitsHeader &head) |
---|
| 528 | { |
---|
[528] | 529 | /// @details |
---|
| 530 | /// Uses the input WCS to calculate the velocity-integrated flux, |
---|
| 531 | /// putting velocity in units of km/s. |
---|
| 532 | /// Integrates over full spatial and velocity range as given |
---|
| 533 | /// by the extrema calculated by calcWCSparams. |
---|
| 534 | /// |
---|
| 535 | /// If the flux units end in "/beam" (eg. Jy/beam), then the flux is |
---|
| 536 | /// corrected by the beam size (in pixels). This is done by |
---|
| 537 | /// multiplying the integrated flux by the number of spatial pixels, |
---|
| 538 | /// and dividing by the beam size in pixels (e.g. Jy/beam * pix / |
---|
| 539 | /// pix/beam --> Jy) |
---|
| 540 | /// |
---|
| 541 | /// \param fluxArray The array of flux values. |
---|
| 542 | /// \param dim The dimensions of the flux array. |
---|
| 543 | /// \param head FitsHeader object that contains the WCS information. |
---|
[3] | 544 | |
---|
[513] | 545 | if(!head.is2D()){ |
---|
[271] | 546 | |
---|
[378] | 547 | // include one pixel either side in each direction |
---|
[570] | 548 | long xsize = (this->xmax-this->xmin+3); |
---|
| 549 | long ysize = (this->ymax-this->ymin+3); |
---|
| 550 | long zsize = (this->zmax-this->zmin+3); |
---|
[463] | 551 | long size = xsize*ysize*zsize; |
---|
[473] | 552 | std::vector <bool> isObj(size,false); |
---|
[463] | 553 | double *localFlux = new double[size]; |
---|
| 554 | for(int i=0;i<size;i++) localFlux[i]=0.; |
---|
[378] | 555 | // work out which pixels are object pixels |
---|
[570] | 556 | for(std::map<long,Object2D>::iterator it=this->chanlist.begin(); |
---|
| 557 | it!=this->chanlist.end(); it++){ |
---|
| 558 | long z = it->first; |
---|
| 559 | for(int s=0; s<it->second.getNumScan();s++){ |
---|
| 560 | long y = it->second.getScan(s).getY(); |
---|
| 561 | for(long x=it->second.getScan(s).getX(); |
---|
| 562 | x<=it->second.getScan(s).getXmax(); |
---|
[378] | 563 | x++){ |
---|
[570] | 564 | long pos = (x-this->xmin+1) + (y-this->ymin+1)*xsize |
---|
| 565 | + (z-this->zmin+1)*xsize*ysize; |
---|
[378] | 566 | localFlux[pos] = fluxArray[x + y*dim[0] + z*dim[0]*dim[1]]; |
---|
| 567 | isObj[pos] = true; |
---|
| 568 | } |
---|
[271] | 569 | } |
---|
[258] | 570 | } |
---|
[570] | 571 | |
---|
[22] | 572 | |
---|
[378] | 573 | // work out the WCS coords for each pixel |
---|
[463] | 574 | double *world = new double[size]; |
---|
[378] | 575 | double xpt,ypt,zpt; |
---|
| 576 | for(int i=0;i<xsize*ysize*zsize;i++){ |
---|
| 577 | xpt = double( this->getXmin() -1 + i%xsize ); |
---|
| 578 | ypt = double( this->getYmin() -1 + (i/xsize)%ysize ); |
---|
| 579 | zpt = double( this->getZmin() -1 + i/(xsize*ysize) ); |
---|
| 580 | world[i] = head.pixToVel(xpt,ypt,zpt); |
---|
| 581 | } |
---|
[3] | 582 | |
---|
[378] | 583 | double integrated = 0.; |
---|
| 584 | for(int pix=0; pix<xsize*ysize; pix++){ // loop over each spatial pixel. |
---|
| 585 | for(int z=0; z<zsize; z++){ |
---|
| 586 | int pos = z*xsize*ysize + pix; |
---|
| 587 | if(isObj[pos]){ // if it's an object pixel... |
---|
| 588 | double deltaVel; |
---|
| 589 | if(z==0) |
---|
| 590 | deltaVel = (world[pos+xsize*ysize] - world[pos]); |
---|
| 591 | else if(z==(zsize-1)) |
---|
| 592 | deltaVel = (world[pos] - world[pos-xsize*ysize]); |
---|
| 593 | else |
---|
| 594 | deltaVel = (world[pos+xsize*ysize] - world[pos-xsize*ysize]) / 2.; |
---|
| 595 | integrated += localFlux[pos] * fabs(deltaVel); |
---|
| 596 | } |
---|
[271] | 597 | } |
---|
[3] | 598 | } |
---|
[378] | 599 | this->intFlux = integrated; |
---|
| 600 | |
---|
[464] | 601 | delete [] world; |
---|
| 602 | delete [] localFlux; |
---|
[463] | 603 | |
---|
[464] | 604 | calcVelWidths(fluxArray, dim, head); |
---|
[463] | 605 | |
---|
[464] | 606 | } |
---|
| 607 | else // in this case there is just a 2D image. |
---|
| 608 | this->intFlux = this->totalFlux; |
---|
[463] | 609 | |
---|
[464] | 610 | if(head.isWCS()){ |
---|
| 611 | // correct for the beam size if the flux units string ends in "/beam" |
---|
| 612 | if(head.needBeamSize()) this->intFlux /= head.getBeamSize(); |
---|
| 613 | } |
---|
[463] | 614 | |
---|
[464] | 615 | } |
---|
| 616 | //-------------------------------------------------------------------- |
---|
| 617 | |
---|
| 618 | void Detection::calcVelWidths(std::vector<Voxel> voxelList, FitsHeader &head) |
---|
| 619 | { |
---|
[528] | 620 | /// @details |
---|
| 621 | /// Calculates the widths of the detection at 20% and 50% of the |
---|
| 622 | /// peak integrated flux. The procedure is as follows: first |
---|
| 623 | /// generate an integrated flux spectrum (using all given voxels |
---|
| 624 | /// that lie in the object's spatial map); find the peak; starting |
---|
| 625 | /// at the spectral edges of the detection, move in or out until |
---|
| 626 | /// you reach the 20% or 50% peak flux level. Linear interpolation |
---|
| 627 | /// between points is done. |
---|
| 628 | /// |
---|
| 629 | /// \param voxelList The list of Voxels with flux information |
---|
| 630 | /// \param head FitsHeader object that contains the WCS information. |
---|
[464] | 631 | |
---|
| 632 | const int border = 1; |
---|
| 633 | long zsize = (this->getZmax()-this->getZmin()+border*2+1); |
---|
| 634 | double xpt = double(this->getXcentre()); |
---|
| 635 | double ypt = double(this->getYcentre()); |
---|
| 636 | double zpt; |
---|
| 637 | |
---|
| 638 | float *intSpec = new float[zsize]; |
---|
| 639 | for(int i=0;i<zsize;i++) intSpec[i]=0; |
---|
| 640 | |
---|
[570] | 641 | Object2D spatMap = this->getSpatialMap(); |
---|
[464] | 642 | for(int s=0;s<spatMap.getNumScan();s++){ |
---|
[541] | 643 | for(unsigned int i=0;i<voxelList.size();i++){ |
---|
[464] | 644 | if(spatMap.isInObject(voxelList[i])){ |
---|
| 645 | if(voxelList[i].getZ()>=this->getZmin()-border && |
---|
| 646 | voxelList[i].getZ()<=this->getZmax()+border) |
---|
| 647 | intSpec[voxelList[i].getZ()-this->getZmin()+1] += voxelList[i].getF(); |
---|
| 648 | } |
---|
[463] | 649 | } |
---|
[464] | 650 | } |
---|
| 651 | |
---|
| 652 | std::vector<std::pair<int,float> > goodPix; |
---|
| 653 | float peak; |
---|
| 654 | int peakLoc; |
---|
| 655 | for(int z=0;z<zsize;z++) { |
---|
| 656 | if(z==0 || peak<intSpec[z]){ |
---|
| 657 | peak = intSpec[z]; |
---|
| 658 | peakLoc = z; |
---|
[463] | 659 | } |
---|
[464] | 660 | goodPix.push_back(std::pair<int,float>(z,intSpec[z])); |
---|
| 661 | } |
---|
[463] | 662 | |
---|
[464] | 663 | // finding the 20% & 50% points. Start at the velmin & velmax |
---|
| 664 | // points. Then, if the int flux there is above the 20%/50% |
---|
| 665 | // limit, go out, otherwise go in. This is to deal with the |
---|
| 666 | // problems from double peaked sources. |
---|
[463] | 667 | |
---|
[464] | 668 | int z; |
---|
| 669 | bool goLeft; |
---|
| 670 | z=border; |
---|
| 671 | goLeft = intSpec[z]>peak*0.5; |
---|
| 672 | if(goLeft) while(z>0 && intSpec[z]>peak*0.5) z--; |
---|
| 673 | else while(z<peakLoc && intSpec[z]<peak*0.5) z++; |
---|
| 674 | if(z==0) this->v50min = this->velMin; |
---|
| 675 | else{ |
---|
| 676 | if(goLeft) zpt = z + (peak*0.5-intSpec[z])/(intSpec[z+1]-intSpec[z]) + this->getZmin() - border; |
---|
| 677 | else zpt = z - (peak*0.5-intSpec[z])/(intSpec[z-1]-intSpec[z]) + this->getZmin() - border; |
---|
| 678 | this->v50min = head.pixToVel(xpt,ypt,zpt); |
---|
| 679 | } |
---|
| 680 | z=this->getZmax()-this->getZmin(); |
---|
| 681 | goLeft = intSpec[z]<peak*0.5; |
---|
| 682 | if(goLeft) while(z>peakLoc && intSpec[z]<peak*0.5) z--; |
---|
| 683 | else while(z<zsize && intSpec[z]>peak*0.5) z++; |
---|
| 684 | if(z==zsize) this->v50max = this->velMax; |
---|
| 685 | else{ |
---|
| 686 | if(goLeft) zpt = z + (peak*0.5-intSpec[z])/(intSpec[z+1]-intSpec[z]) + this->getZmin() - border; |
---|
| 687 | else zpt = z - (peak*0.5-intSpec[z])/(intSpec[z-1]-intSpec[z]) + this->getZmin() - border; |
---|
| 688 | this->v50max = head.pixToVel(xpt,ypt,zpt); |
---|
| 689 | } |
---|
| 690 | z=border; |
---|
| 691 | goLeft = intSpec[z]>peak*0.5; |
---|
| 692 | if(goLeft) while(z>0 && intSpec[z]>peak*0.2) z--; |
---|
| 693 | else while(z<peakLoc && intSpec[z]<peak*0.2) z++; |
---|
| 694 | if(z==0) this->v20min = this->velMin; |
---|
| 695 | else{ |
---|
| 696 | if(goLeft) zpt = z + (peak*0.2-intSpec[z])/(intSpec[z+1]-intSpec[z]) + this->getZmin() - border; |
---|
| 697 | else zpt = z - (peak*0.2-intSpec[z])/(intSpec[z-1]-intSpec[z]) + this->getZmin() - border; |
---|
| 698 | this->v20min = head.pixToVel(xpt,ypt,zpt); |
---|
| 699 | } |
---|
| 700 | z=this->getZmax()-this->getZmin(); |
---|
| 701 | goLeft = intSpec[z]<peak*0.5; |
---|
| 702 | if(goLeft) while(z>peakLoc && intSpec[z]<peak*0.2) z--; |
---|
| 703 | else while(z<zsize && intSpec[z]>peak*0.2) z++; |
---|
| 704 | if(z==zsize) this->v20max = this->velMax; |
---|
| 705 | else{ |
---|
| 706 | if(goLeft) zpt = z + (peak*0.2-intSpec[z])/(intSpec[z+1]-intSpec[z]) + this->getZmin() - border; |
---|
| 707 | else zpt = z - (peak*0.2-intSpec[z])/(intSpec[z-1]-intSpec[z]) + this->getZmin() - border; |
---|
| 708 | this->v20max = head.pixToVel(xpt,ypt,zpt); |
---|
| 709 | } |
---|
[463] | 710 | |
---|
[464] | 711 | this->w20 = fabs(this->v20min - this->v20max); |
---|
| 712 | this->w50 = fabs(this->v50min - this->v50max); |
---|
[463] | 713 | |
---|
[464] | 714 | delete [] intSpec; |
---|
[378] | 715 | |
---|
[464] | 716 | } |
---|
| 717 | |
---|
| 718 | //-------------------------------------------------------------------- |
---|
| 719 | |
---|
| 720 | void Detection::calcVelWidths(float *fluxArray, long *dim, FitsHeader &head) |
---|
| 721 | { |
---|
[528] | 722 | /// @details |
---|
| 723 | /// Calculates the widths of the detection at 20% and 50% of the |
---|
| 724 | /// peak integrated flux. The procedure is as follows: first |
---|
| 725 | /// generate an integrated flux spectrum (summing each spatial |
---|
| 726 | /// pixel's spectrum); find the peak; starting at the spectral |
---|
| 727 | /// edges of the detection, move in or out until you reach the 20% |
---|
| 728 | /// or 50% peak flux level. Linear interpolation between points is |
---|
| 729 | /// done. |
---|
| 730 | /// |
---|
| 731 | /// \param fluxArray The array of flux values. |
---|
| 732 | /// \param dim The dimensions of the flux array. |
---|
| 733 | /// \param head FitsHeader object that contains the WCS information. |
---|
[464] | 734 | |
---|
[465] | 735 | if(dim[2] > 2){ |
---|
[464] | 736 | |
---|
[465] | 737 | double xpt = double(this->getXcentre()); |
---|
| 738 | double ypt = double(this->getYcentre()); |
---|
| 739 | double zpt; |
---|
[464] | 740 | |
---|
[465] | 741 | float *intSpec = new float[dim[2]]; |
---|
| 742 | bool *mask = new bool[dim[0]*dim[1]*dim[2]]; |
---|
| 743 | for(int i=0;i<dim[0]*dim[1]*dim[2];i++) mask[i] = true; |
---|
| 744 | getIntSpec(*this,fluxArray,dim,mask,1.,intSpec); |
---|
| 745 | |
---|
| 746 | std::vector<std::pair<int,float> > goodPix; |
---|
| 747 | float peak; |
---|
| 748 | int peakLoc; |
---|
| 749 | for(int z=this->getZmin();z<=this->getZmax();z++) { |
---|
| 750 | if(z==this->getZmin() || peak<intSpec[z]){ |
---|
| 751 | peak = intSpec[z]; |
---|
| 752 | peakLoc = z; |
---|
| 753 | } |
---|
| 754 | goodPix.push_back(std::pair<int,float>(z,intSpec[z])); |
---|
[464] | 755 | } |
---|
[103] | 756 | |
---|
[465] | 757 | // finding the 20% & 50% points. Start at the velmin & velmax |
---|
| 758 | // points. Then, if the int flux there is above the 20%/50% |
---|
| 759 | // limit, go out, otherwise go in. This is to deal with the |
---|
| 760 | // problems from double- (or multi-) peaked sources. |
---|
[464] | 761 | |
---|
[465] | 762 | int z; |
---|
| 763 | bool goLeft; |
---|
| 764 | z=this->getZmin(); |
---|
| 765 | goLeft = intSpec[z]>peak*0.5; |
---|
| 766 | if(goLeft) while(z>0 && intSpec[z]>peak*0.5) z--; |
---|
| 767 | else while(z<peakLoc && intSpec[z]<peak*0.5) z++; |
---|
| 768 | if(z==0) this->v50min = this->velMin; |
---|
| 769 | else{ |
---|
| 770 | if(goLeft) zpt = z + (peak*0.5-intSpec[z])/(intSpec[z+1]-intSpec[z]); |
---|
| 771 | else zpt = z - (peak*0.5-intSpec[z])/(intSpec[z-1]-intSpec[z]); |
---|
| 772 | this->v50min = head.pixToVel(xpt,ypt,zpt); |
---|
| 773 | } |
---|
| 774 | z=this->getZmax(); |
---|
| 775 | goLeft = intSpec[z]<peak*0.5; |
---|
| 776 | if(goLeft) while(z>peakLoc && intSpec[z]<peak*0.5) z--; |
---|
| 777 | else while(z<dim[2] && intSpec[z]>peak*0.5) z++; |
---|
| 778 | if(z==dim[2]) this->v50max = this->velMax; |
---|
| 779 | else{ |
---|
| 780 | if(goLeft) zpt = z + (peak*0.5-intSpec[z])/(intSpec[z+1]-intSpec[z]); |
---|
| 781 | else zpt = z - (peak*0.5-intSpec[z])/(intSpec[z-1]-intSpec[z]); |
---|
| 782 | this->v50max = head.pixToVel(xpt,ypt,zpt); |
---|
| 783 | } |
---|
| 784 | z=this->getZmin(); |
---|
| 785 | goLeft = intSpec[z]>peak*0.5; |
---|
| 786 | if(goLeft) while(z>0 && intSpec[z]>peak*0.2) z--; |
---|
| 787 | else while(z<peakLoc && intSpec[z]<peak*0.2) z++; |
---|
| 788 | if(z==0) this->v20min = this->velMin; |
---|
| 789 | else{ |
---|
| 790 | if(goLeft) zpt = z + (peak*0.2-intSpec[z])/(intSpec[z+1]-intSpec[z]); |
---|
| 791 | else zpt = z - (peak*0.2-intSpec[z])/(intSpec[z-1]-intSpec[z]); |
---|
| 792 | this->v20min = head.pixToVel(xpt,ypt,zpt); |
---|
| 793 | } |
---|
| 794 | z=this->getZmax(); |
---|
| 795 | goLeft = intSpec[z]<peak*0.5; |
---|
| 796 | if(goLeft) while(z>peakLoc && intSpec[z]<peak*0.2) z--; |
---|
| 797 | else while(z<dim[2] && intSpec[z]>peak*0.2) z++; |
---|
| 798 | if(z==dim[2]) this->v20max = this->velMax; |
---|
| 799 | else{ |
---|
| 800 | if(goLeft) zpt = z + (peak*0.2-intSpec[z])/(intSpec[z+1]-intSpec[z]); |
---|
| 801 | else zpt = z - (peak*0.2-intSpec[z])/(intSpec[z-1]-intSpec[z]); |
---|
| 802 | this->v20max = head.pixToVel(xpt,ypt,zpt); |
---|
| 803 | } |
---|
| 804 | |
---|
| 805 | delete [] intSpec; |
---|
| 806 | delete [] mask; |
---|
| 807 | |
---|
[378] | 808 | } |
---|
[464] | 809 | else{ |
---|
[465] | 810 | this->v50min = this->v20min = this->velMin; |
---|
| 811 | this->v50max = this->v20max = this->velMax; |
---|
[464] | 812 | } |
---|
[300] | 813 | |
---|
[464] | 814 | this->w20 = fabs(this->v20min - this->v20max); |
---|
| 815 | this->w50 = fabs(this->v50min - this->v50max); |
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| 816 | |
---|
[300] | 817 | } |
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[378] | 818 | //-------------------------------------------------------------------- |
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[300] | 819 | |
---|
[378] | 820 | void Detection::setOffsets(Param &par) |
---|
| 821 | { |
---|
[528] | 822 | /// @details |
---|
| 823 | /// This function stores the values of the offsets for each cube axis. |
---|
| 824 | /// The offsets are the starting values of the cube axes that may differ from |
---|
| 825 | /// the default value of 0 (for instance, if a subsection is being used). |
---|
| 826 | /// The values will be used when the detection is outputted. |
---|
| 827 | |
---|
[378] | 828 | this->xSubOffset = par.getXOffset(); |
---|
| 829 | this->ySubOffset = par.getYOffset(); |
---|
| 830 | this->zSubOffset = par.getZOffset(); |
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| 831 | } |
---|
| 832 | //-------------------------------------------------------------------- |
---|
[3] | 833 | |
---|
[378] | 834 | bool Detection::hasEnoughChannels(int minNumber) |
---|
| 835 | { |
---|
[528] | 836 | /// @details |
---|
| 837 | /// A function to determine if the Detection has enough |
---|
| 838 | /// contiguous channels to meet the minimum requirement |
---|
| 839 | /// given as the argument. |
---|
| 840 | /// \param minNumber How many channels is the minimum acceptable number? |
---|
| 841 | /// \return True if there is at least one occurence of minNumber consecutive |
---|
| 842 | /// channels present to return true. False otherwise. |
---|
[3] | 843 | |
---|
[378] | 844 | // Preferred method -- need a set of minNumber consecutive channels present. |
---|
[3] | 845 | |
---|
[570] | 846 | int numChan = this->getMaxAdjacentChannels(); |
---|
| 847 | bool result = (numChan >= minNumber); |
---|
| 848 | |
---|
[378] | 849 | return result; |
---|
| 850 | |
---|
| 851 | } |
---|
| 852 | //-------------------------------------------------------------------- |
---|
[3] | 853 | |
---|
[452] | 854 | std::vector<int> Detection::getVertexSet() |
---|
| 855 | { |
---|
[528] | 856 | /// @details |
---|
| 857 | /// Gets a list of points being the end-points of 1-pixel long |
---|
| 858 | /// segments drawing a border around the spatial extend of a |
---|
| 859 | /// detection. The vector is a series of 4 integers, being: x_0, |
---|
| 860 | /// y_0, x_1, y_1. |
---|
| 861 | /// \return The vector of vertex positions. |
---|
| 862 | |
---|
[452] | 863 | std::vector<int> vertexSet; |
---|
| 864 | |
---|
| 865 | int xmin = this->getXmin() - 1; |
---|
| 866 | int xmax = this->getXmax() + 1; |
---|
| 867 | int ymin = this->getYmin() - 1; |
---|
| 868 | int ymax = this->getYmax() + 1; |
---|
| 869 | int xsize = xmax - xmin + 1; |
---|
| 870 | int ysize = ymax - ymin + 1; |
---|
| 871 | |
---|
[570] | 872 | std::vector<Voxel> voxlist = this->getPixelSet(); |
---|
[452] | 873 | std::vector<bool> isObj(xsize*ysize,false); |
---|
[541] | 874 | for(unsigned int i=0;i<voxlist.size();i++){ |
---|
[452] | 875 | int pos = (voxlist[i].getX()-xmin) + |
---|
| 876 | (voxlist[i].getY()-ymin)*xsize; |
---|
| 877 | isObj[pos] = true; |
---|
| 878 | } |
---|
| 879 | voxlist.clear(); |
---|
| 880 | |
---|
| 881 | for(int x=xmin; x<=xmax; x++){ |
---|
| 882 | // for each column... |
---|
| 883 | for(int y=ymin+1;y<=ymax;y++){ |
---|
| 884 | int current = (y-ymin)*xsize + x-xmin; |
---|
| 885 | int previous = (y-ymin-1)*xsize + x-xmin; |
---|
| 886 | if((isObj[current]&&!isObj[previous]) || |
---|
| 887 | (!isObj[current]&&isObj[previous])){ |
---|
| 888 | vertexSet.push_back(x); |
---|
| 889 | vertexSet.push_back(y); |
---|
| 890 | vertexSet.push_back(x+1); |
---|
| 891 | vertexSet.push_back(y); |
---|
| 892 | } |
---|
| 893 | } |
---|
| 894 | } |
---|
| 895 | for(int y=ymin; y<=ymax; y++){ |
---|
| 896 | // now for each row... |
---|
| 897 | for(int x=xmin+1;x<=xmax;x++){ |
---|
| 898 | int current = (y-ymin)*xsize + x-xmin; |
---|
| 899 | int previous = (y-ymin)*xsize + x-xmin - 1; |
---|
| 900 | if((isObj[current]&&!isObj[previous]) || |
---|
| 901 | (!isObj[current]&&isObj[previous])){ |
---|
| 902 | vertexSet.push_back(x); |
---|
| 903 | vertexSet.push_back(y); |
---|
| 904 | vertexSet.push_back(x); |
---|
| 905 | vertexSet.push_back(y+1); |
---|
| 906 | } |
---|
| 907 | } |
---|
| 908 | } |
---|
| 909 | |
---|
| 910 | return vertexSet; |
---|
| 911 | |
---|
| 912 | } |
---|
| 913 | |
---|
[3] | 914 | } |
---|