1 | // ----------------------------------------------------------------------- |
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2 | // plots.cc: Functions defining SpectralPlot and ImagePlot classes. |
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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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28 | #include <iostream> |
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29 | #include <sstream> |
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30 | #include <string> |
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31 | #include <math.h> |
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32 | #include <cpgplot.h> |
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33 | #include <param.hh> |
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34 | #include <duchamp.hh> |
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35 | #include <Utils/mycpgplot.hh> |
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36 | #include <Cubes/plots.hh> |
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37 | |
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38 | using std::stringstream; |
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39 | using namespace mycpgplot; |
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40 | |
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41 | namespace Plot |
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42 | { |
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43 | |
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44 | //---------------------------------------------------------- |
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45 | // SpectralPlot functions |
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46 | //---------------------------------------------------------- |
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47 | |
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48 | SpectralPlot::SpectralPlot(){ |
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49 | paperWidth=a4width/inchToCm - 2*psHoffset; |
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50 | spectraCount=0; |
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51 | numOnPage = 5; |
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52 | }; |
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53 | |
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54 | SpectralPlot::~SpectralPlot(){}; |
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55 | //---------------------------------------------------------- |
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56 | int SpectralPlot::setUpPlot(std::string pgDestination){ |
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57 | /** |
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58 | * Opens the designated pgplot device. Scales the paper so that |
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59 | * it fits on an A4 sheet (using known values of the default |
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60 | * pgplot offsets). |
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61 | * |
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62 | * \param pgDestination The std::string indicating the PGPLOT device to |
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63 | * be written to. |
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64 | * |
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65 | * \return The value returned by mycpgopen. If <= 0, then an error |
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66 | * has occurred. |
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67 | */ |
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68 | paperHeight = paperWidth*M_SQRT2; |
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69 | if(paperHeight+2*psVoffset > a4height){ |
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70 | paperHeight = a4height - 2*psVoffset; |
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71 | paperWidth = paperHeight / M_SQRT2; |
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72 | } |
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73 | identifier = mycpgopen(pgDestination); |
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74 | if(identifier>0) cpgpap(paperWidth, paperHeight/paperWidth); |
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75 | // make paper size to fit on A4. |
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76 | return identifier; |
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77 | } |
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78 | //---------------------------------------------------------- |
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79 | void SpectralPlot::calcCoords(){ |
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80 | /** |
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81 | * Calculates the boundaries for the various boxes, in inches measured |
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82 | * from the lower left corner. |
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83 | * Based on the fact that there are numOnPage spectra shown on each |
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84 | * page, going down the page in increasing number (given by |
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85 | * SpectralPlot::spectraCount). |
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86 | */ |
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87 | int posOnPage = (numOnPage - (spectraCount%numOnPage))%numOnPage; |
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88 | mainCoords[0] = Plot::spMainX1/inchToCm; |
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89 | mainCoords[1] = Plot::spMainX2/inchToCm; |
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90 | zoomCoords[0] = Plot::spZoomX1/inchToCm; |
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91 | zoomCoords[1] = Plot::spZoomX2/inchToCm; |
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92 | mainCoords[2] = zoomCoords[2] = mapCoords[2] = |
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93 | posOnPage*paperHeight/float(numOnPage) + Plot::spMainY1/inchToCm; |
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94 | mainCoords[3] = zoomCoords[3] = mapCoords[3] = |
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95 | posOnPage*paperHeight/float(numOnPage) + Plot::spMainY2/inchToCm; |
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96 | mapCoords[0] = Plot::spMapX1/inchToCm; |
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97 | mapCoords[1] = mapCoords[0] + (mapCoords[3]-mapCoords[2]); |
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98 | } |
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99 | //---------------------------------------------------------- |
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100 | void SpectralPlot::gotoHeader(std::string xlabel){ |
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101 | /** |
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102 | * Calls calcCoords, to calculate correct coordinates for this spectrum. |
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103 | * Defines the region for the header information, making it centred |
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104 | * on the page. |
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105 | * Also writes the velocity (x axis) label, given by the string argument. |
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106 | * \param xlabel Label to go on the velocity/spectral axis. |
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107 | */ |
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108 | if(spectraCount%numOnPage==0) cpgpage(); |
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109 | spectraCount++; |
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110 | calcCoords(); |
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111 | cpgvsiz(0., paperWidth, mainCoords[2], mainCoords[3]); |
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112 | cpgsch(spLabelSize); |
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113 | cpgmtxt("b",Plot::spXlabelOffset,0.5,0.5,xlabel.c_str()); |
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114 | } |
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115 | //---------------------------------------------------------- |
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116 | void SpectralPlot::gotoMainSpectrum(float x1, float x2, float y1, float y2, std::string ylabel){ |
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117 | /** |
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118 | * Defines the region for the main spectrum. |
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119 | * Draws the box, with tick marks, and |
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120 | * writes the flux (y axis) label, given by the string argument. |
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121 | * \param x1 Minimum X-coordinate of box. |
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122 | * \param x2 Maximum X-coordinate of box. |
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123 | * \param y1 Minimum Y-coordinate of box. |
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124 | * \param y2 Maximum Y-coordinate of box. |
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125 | * \param ylabel Label for the flux (Y) axis. |
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126 | */ |
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127 | cpgvsiz(mainCoords[0],mainCoords[1],mainCoords[2],mainCoords[3]); |
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128 | cpgsch(spIndexSize); |
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129 | cpgswin(x1,x2,y1,y2); |
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130 | cpgbox("1bcnst",0.,0,"bcnst1v",0.,0); |
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131 | cpgsch(spLabelSize); |
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132 | cpgmtxt("l",Plot::spYlabelOffset,0.5,0.5,ylabel.c_str()); |
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133 | } |
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134 | //---------------------------------------------------------- |
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135 | void SpectralPlot::gotoZoomSpectrum(float x1, float x2, float y1, float y2){ |
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136 | /** |
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137 | * Defines the region for the zoomed-in part of the spectrum. |
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138 | * Draws the box, with special tick marks on the bottom axis. |
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139 | * \param x1 Minimum X-coordinate of box. |
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140 | * \param x2 Maximum X-coordinate of box. |
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141 | * \param y1 Minimum Y-coordinate of box. |
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142 | * \param y2 Maximum Y-coordinate of box. |
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143 | */ |
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144 | cpgvsiz(zoomCoords[0],zoomCoords[1],zoomCoords[2],zoomCoords[3]); |
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145 | cpgsch(spIndexSize); |
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146 | cpgswin(x1,x2,y1,y2); |
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147 | cpgbox("bc",0.,0,"bcstn1v",0.,0); |
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148 | float lengthL,lengthR,disp,tickpt,step; |
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149 | stringstream label; |
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150 | for(int i=1;i<10;i++){ |
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151 | tickpt = x1+(x2-x1)*float(i)/10.; // spectral coord of the tick |
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152 | switch(i) |
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153 | { |
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154 | case 2: |
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155 | case 8: |
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156 | lengthL = lengthR = 0.5; |
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157 | disp = 0.3 + float(i-2)/6.; // i==2 --> disp=0.3, i==8 --> disp=1.3 |
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158 | label.str(""); |
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159 | label << tickpt; |
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160 | // do a labelled tick mark |
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161 | cpgtick(x1,y1,x2,y1,float(i)/10.,lengthL,lengthR, |
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162 | disp, 0., label.str().c_str()); |
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163 | break; |
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164 | default: |
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165 | label.str(""); |
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166 | lengthL = 0.25; |
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167 | lengthR = 0.; |
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168 | disp = 0.; // not used in this case, but set it anyway. |
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169 | break; |
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170 | } |
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171 | // first the bottom axis, just the ticks |
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172 | if(fabs(tickpt)<(x2-x1)/1.e4) step = 2.*(x2-x1); |
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173 | else step = tickpt; |
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174 | cpgaxis("", |
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175 | tickpt-0.001*(x2-x1), y1, |
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176 | tickpt+0.001*(x2-x1), y1, |
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177 | tickpt-0.001*(x2-x1), tickpt+0.001*(x2-x1), |
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178 | step, -1, lengthL,lengthR, 0.5, disp, 0.); |
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179 | //and now the top -- no labels, just tick marks |
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180 | cpgtick(x1,y2,x2,y2,float(i)/10.,lengthL,lengthR,0.,0.,""); |
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181 | } |
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182 | } |
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183 | //---------------------------------------------------------- |
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184 | void SpectralPlot::gotoMap(){ |
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185 | cpgvsiz(mapCoords[0],mapCoords[1],mapCoords[2],mapCoords[3]); |
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186 | cpgsch(spIndexSize); |
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187 | } |
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188 | //---------------------------------------------------------- |
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189 | void SpectralPlot::drawVelRange(float v1, float v2){ |
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190 | /** |
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191 | * Draws two vertical lines at the limits of velocity |
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192 | * given by the arguments. |
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193 | * \param v1 Minimum velocity. |
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194 | * \param v2 Maximum velocity. |
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195 | */ |
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196 | int ci,ls; |
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197 | float dud,min,max; |
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198 | cpgqwin(&dud,&dud,&min,&max); |
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199 | cpgqci(&ci); |
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200 | cpgqls(&ls); |
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201 | cpgsci(DUCHAMP_OBJECT_OUTLINE_COLOUR); |
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202 | cpgsls(DASHED); |
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203 | cpgmove(v1,min); cpgdraw(v1,max); |
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204 | cpgmove(v2,min); cpgdraw(v2,max); |
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205 | cpgsci(ci); |
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206 | cpgsls(ls); |
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207 | } |
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208 | //---------------------------------------------------------- |
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209 | void SpectralPlot::drawMWRange(float v1, float v2){ |
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210 | /** |
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211 | * Draws a box showing the extent of channels masked by the |
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212 | * Milky Way parameters |
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213 | * \param v1 Minimum velocity of the Milky Way range. |
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214 | * \param v2 Maximum velocity of the Milky Way range. |
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215 | */ |
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216 | int ci,fs; |
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217 | float dud,min,max,height; |
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218 | cpgqwin(&dud,&dud,&min,&max); |
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219 | height = max-min; |
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220 | max += 0.01*height; |
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221 | min -= 0.01*height; |
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222 | cpgqci(&ci); |
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223 | cpgqfs(&fs); |
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224 | setDarkGreen(); |
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225 | cpgsci(DUCHAMP_MILKY_WAY_COLOUR); |
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226 | cpgsfs(HATCHED); |
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227 | cpgrect(v1,v2,min,max); |
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228 | cpgsfs(OUTLINE); |
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229 | cpgrect(v1,v2,min,max); |
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230 | cpgsci(ci); |
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231 | cpgsfs(fs); |
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232 | } |
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233 | |
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234 | //---------------------------------------------------------- |
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235 | //---------------------------------------------------------- |
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236 | // ImagePlot functions |
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237 | //---------------------------------------------------------- |
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238 | |
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239 | ImagePlot::ImagePlot(){ |
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240 | paperWidth = 7.5; |
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241 | maxPaperHeight = 10.; |
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242 | marginWidth = 0.8; |
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243 | wedgeWidth = 0.7; |
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244 | }; |
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245 | |
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246 | ImagePlot::~ImagePlot(){}; |
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247 | //---------------------------------------------------------- |
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248 | |
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249 | int ImagePlot::setUpPlot(std::string pgDestination, float x, float y){ |
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250 | /** |
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251 | * Opens a pgplot device and scales it to the correct shape. |
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252 | * In doing so, the dimensions for the image are set, and the required |
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253 | * aspect ratios of the image and of the plot are calculated. |
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254 | * If the resulting image is going to be tall enough to exceed the |
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255 | * maximum height (given the default width), then scale everything |
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256 | * down by enough to make the height equal to maxPaperHeight. |
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257 | * \param pgDestination The string indicating the PGPLOT device to be |
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258 | * written to. |
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259 | * \param x The length of the X-axis. |
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260 | * \param y The length of the Y-axis. |
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261 | * \return The value returned by mycpgopen: if <= 0, then an error |
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262 | * has occurred. |
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263 | */ |
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264 | xdim = x; |
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265 | ydim = y; |
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266 | imageRatio= ydim / xdim; |
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267 | aspectRatio = (imageRatio*imageWidth() + 2*marginWidth) / paperWidth; |
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268 | float correction; |
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269 | if((imageRatio*imageWidth() + 2*marginWidth) > maxPaperHeight){ |
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270 | correction = maxPaperHeight / (imageRatio*imageWidth()+2*marginWidth); |
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271 | paperWidth *= correction; |
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272 | marginWidth *= correction; |
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273 | wedgeWidth *= correction; |
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274 | } |
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275 | identifier = mycpgopen(pgDestination); |
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276 | if(identifier>0) cpgpap(paperWidth, aspectRatio); |
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277 | return identifier; |
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278 | } |
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279 | //---------------------------------------------------------- |
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280 | void ImagePlot::drawMapBox(float x1, float x2, float y1, float y2, |
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281 | std::string xlabel, std::string ylabel){ |
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282 | /** |
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283 | * Defines the region that the box containing the map is to go in, |
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284 | * and draws the box with limits given by the arguments. |
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285 | * Also writes labels on both X- and Y-axes. |
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286 | * \param x1 Minimum X-axis value. |
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287 | * \param x2 Maximum X-axis value. |
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288 | * \param y1 Minimum Y-axis value. |
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289 | * \param y2 Maximum Y-axis value. |
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290 | * \param xlabel The label to be put on the X-axis. |
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291 | * \param ylabel The label to be put on the Y-axis. |
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292 | */ |
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293 | cpgvsiz(marginWidth, marginWidth + imageWidth(), |
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294 | marginWidth, marginWidth + (imageWidth()*imageRatio)); |
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295 | cpgslw(2); |
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296 | cpgswin(x1,x2,y1,y2); |
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297 | cpgbox("bcst",0.,0,"bcst",0.,0); |
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298 | cpgslw(1); |
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299 | cpgbox("bcnst",0.,0,"bcnst",0.,0); |
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300 | cpglab(xlabel.c_str(), ylabel.c_str(), ""); |
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301 | } |
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302 | //---------------------------------------------------------- |
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303 | void ImagePlot::makeTitle(std::string title){ |
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304 | /** |
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305 | * Writes the title for the plot, making it centred for the entire |
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306 | * plot and not just the map. |
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307 | * \param title String with title for plot. |
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308 | */ |
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309 | cpgvstd(); |
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310 | cpgmtxt("t", Plot::imTitleOffset, 0.5, 0.5, title.c_str()); |
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311 | } |
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312 | |
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313 | |
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314 | } |
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