1 | <?php
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2 | /*=======================================================================
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3 | // File: JPGRAPH_SCATTER.PHP
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4 | // Description: Scatter (and impuls) plot extension for JpGraph
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5 | // Created: 2001-02-11
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6 | // Ver: $Id: jpgraph_scatter.php 1397 2009-06-27 21:34:14Z ljp $
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7 | //
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8 | // Copyright (c) Asial Corporation. All rights reserved.
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9 | //========================================================================
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10 | */
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11 | require_once ('jpgraph_plotmark.inc.php');
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12 |
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13 | //===================================================
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14 | // CLASS FieldArrow
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15 | // Description: Draw an arrow at (x,y) with angle a
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16 | //===================================================
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17 | class FieldArrow {
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18 | public $iColor='black';
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19 | public $iSize=10; // Length in pixels for arrow
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20 | public $iArrowSize = 2;
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21 | private $isizespec = array(
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22 | array(2,1),array(3,2),array(4,3),array(6,4),array(7,4),array(8,5),array(10,6),array(12,7),array(16,8),array(20,10)
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23 | );
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24 | function __construct() {
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25 | // Empty
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26 | }
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27 |
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28 | function SetSize($aSize,$aArrowSize=2) {
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29 | $this->iSize = $aSize;
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30 | $this->iArrowSize = $aArrowSize;
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31 | }
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32 |
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33 | function SetColor($aColor) {
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34 | $this->iColor = $aColor;
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35 | }
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36 |
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37 | function Stroke($aImg,$x,$y,$a) {
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38 | // First rotate the center coordinates
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39 | list($x,$y) = $aImg->Rotate($x,$y);
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40 |
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41 | $old_origin = $aImg->SetCenter($x,$y);
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42 | $old_a = $aImg->a;
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43 | $aImg->SetAngle(-$a+$old_a);
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44 |
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45 | $dx = round($this->iSize/2);
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46 | $c = array($x-$dx,$y,$x+$dx,$y);
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47 | $x += $dx;
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48 |
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49 | list($dx,$dy) = $this->isizespec[$this->iArrowSize];
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50 | $ca = array($x,$y,$x-$dx,$y-$dy,$x-$dx,$y+$dy,$x,$y);
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51 |
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52 | $aImg->SetColor($this->iColor);
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53 | $aImg->Polygon($c);
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54 | $aImg->FilledPolygon($ca);
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55 |
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56 | $aImg->SetCenter($old_origin[0],$old_origin[1]);
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57 | $aImg->SetAngle($old_a);
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58 | }
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59 | }
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60 |
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61 | //===================================================
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62 | // CLASS FieldPlot
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63 | // Description: Render a field plot
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64 | //===================================================
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65 | class FieldPlot extends Plot {
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66 | public $arrow = '';
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67 | private $iAngles = array();
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68 | private $iCallback = '';
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69 |
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70 | function __construct($datay,$datax,$angles) {
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71 | if( (count($datax) != count($datay)) )
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72 | JpGraphError::RaiseL(20001);//("Fieldplots must have equal number of X and Y points.");
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73 | if( (count($datax) != count($angles)) )
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74 | JpGraphError::RaiseL(20002);//("Fieldplots must have an angle specified for each X and Y points.");
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75 |
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76 | $this->iAngles = $angles;
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77 |
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78 | parent::__construct($datay,$datax);
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79 | $this->value->SetAlign('center','center');
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80 | $this->value->SetMargin(15);
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81 |
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82 | $this->arrow = new FieldArrow();
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83 | }
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84 |
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85 | function SetCallback($aFunc) {
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86 | $this->iCallback = $aFunc;
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87 | }
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88 |
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89 | function Stroke($img,$xscale,$yscale) {
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90 |
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91 | // Remeber base color and size
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92 | $bc = $this->arrow->iColor;
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93 | $bs = $this->arrow->iSize;
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94 | $bas = $this->arrow->iArrowSize;
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95 |
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96 | for( $i=0; $i<$this->numpoints; ++$i ) {
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97 | // Skip null values
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98 | if( $this->coords[0][$i]==="" )
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99 | continue;
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100 |
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101 | $f = $this->iCallback;
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102 | if( $f != "" ) {
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103 | list($cc,$cs,$cas) = call_user_func($f,$this->coords[1][$i],$this->coords[0][$i],$this->iAngles[$i]);
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104 | // Fall back on global data if the callback isn't set
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105 | if( $cc == "" ) $cc = $bc;
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106 | if( $cs == "" ) $cs = $bs;
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107 | if( $cas == "" ) $cas = $bas;
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108 | $this->arrow->SetColor($cc);
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109 | $this->arrow->SetSize($cs,$cas);
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110 | }
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111 |
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112 | $xt = $xscale->Translate($this->coords[1][$i]);
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113 | $yt = $yscale->Translate($this->coords[0][$i]);
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114 |
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115 | $this->arrow->Stroke($img,$xt,$yt,$this->iAngles[$i]);
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116 | $this->value->Stroke($img,$this->coords[0][$i],$xt,$yt);
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117 | }
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118 | }
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119 |
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120 | // Framework function
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121 | function Legend($aGraph) {
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122 | if( $this->legend != "" ) {
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123 | $aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0,
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124 | $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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125 | }
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126 | }
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127 | }
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128 |
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129 | //===================================================
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130 | // CLASS ScatterPlot
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131 | // Description: Render X and Y plots
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132 | //===================================================
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133 | class ScatterPlot extends Plot {
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134 | public $mark,$link;
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135 | private $impuls = false;
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136 | //---------------
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137 | // CONSTRUCTOR
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138 | function __construct($datay,$datax=false) {
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139 | if( is_array($datax) && (count($datax) != count($datay)) ) {
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140 | JpGraphError::RaiseL(20003);//("Scatterplot must have equal number of X and Y points.");
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141 | }
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142 | parent::__construct($datay,$datax);
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143 | $this->mark = new PlotMark();
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144 | $this->mark->SetType(MARK_SQUARE);
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145 | $this->mark->SetColor($this->color);
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146 | $this->value->SetAlign('center','center');
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147 | $this->value->SetMargin(0);
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148 | $this->link = new LineProperty(1,'black','solid');
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149 | $this->link->iShow = false;
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150 | }
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151 |
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152 | //---------------
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153 | // PUBLIC METHODS
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154 | function SetImpuls($f=true) {
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155 | $this->impuls = $f;
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156 | }
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157 |
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158 | function SetStem($f=true) {
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159 | $this->impuls = $f;
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160 | }
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161 |
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162 | // Combine the scatter plot points with a line
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163 | function SetLinkPoints($aFlag=true,$aColor="black",$aWeight=1,$aStyle='solid') {
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164 | $this->link->iShow = $aFlag;
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165 | $this->link->iColor = $aColor;
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166 | $this->link->iWeight = $aWeight;
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167 | $this->link->iStyle = $aStyle;
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168 | }
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169 |
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170 | function Stroke($img,$xscale,$yscale) {
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171 |
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172 | $ymin=$yscale->scale_abs[0];
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173 | if( $yscale->scale[0] < 0 )
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174 | $yzero=$yscale->Translate(0);
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175 | else
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176 | $yzero=$yscale->scale_abs[0];
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177 |
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178 | $this->csimareas = '';
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179 | for( $i=0; $i<$this->numpoints; ++$i ) {
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180 |
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181 | // Skip null values
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182 | if( $this->coords[0][$i]==='' || $this->coords[0][$i]==='-' || $this->coords[0][$i]==='x')
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183 | continue;
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184 |
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185 | if( isset($this->coords[1]) )
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186 | $xt = $xscale->Translate($this->coords[1][$i]);
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187 | else
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188 | $xt = $xscale->Translate($i);
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189 | $yt = $yscale->Translate($this->coords[0][$i]);
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190 |
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191 |
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192 | if( $this->link->iShow && isset($yt_old) ) {
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193 | $img->SetColor($this->link->iColor);
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194 | $img->SetLineWeight($this->link->iWeight);
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195 | $old = $img->SetLineStyle($this->link->iStyle);
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196 | $img->StyleLine($xt_old,$yt_old,$xt,$yt);
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197 | $img->SetLineStyle($old);
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198 | }
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199 |
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200 | if( $this->impuls ) {
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201 | $img->SetColor($this->color);
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202 | $img->SetLineWeight($this->weight);
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203 | $img->Line($xt,$yzero,$xt,$yt);
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204 | }
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205 |
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206 | if( !empty($this->csimtargets[$i]) ) {
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207 | if( !empty($this->csimwintargets[$i]) ) {
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208 | $this->mark->SetCSIMTarget($this->csimtargets[$i],$this->csimwintargets[$i]);
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209 | }
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210 | else {
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211 | $this->mark->SetCSIMTarget($this->csimtargets[$i]);
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212 | }
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213 | $this->mark->SetCSIMAlt($this->csimalts[$i]);
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214 | }
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215 |
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216 | if( isset($this->coords[1]) ) {
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217 | $this->mark->SetCSIMAltVal($this->coords[0][$i],$this->coords[1][$i]);
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218 | }
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219 | else {
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220 | $this->mark->SetCSIMAltVal($this->coords[0][$i],$i);
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221 | }
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222 |
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223 | $this->mark->Stroke($img,$xt,$yt);
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224 |
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225 | $this->csimareas .= $this->mark->GetCSIMAreas();
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226 | $this->value->Stroke($img,$this->coords[0][$i],$xt,$yt);
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227 |
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228 | $xt_old = $xt;
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229 | $yt_old = $yt;
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230 | }
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231 | }
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232 |
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233 | // Framework function
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234 | function Legend($aGraph) {
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235 | if( $this->legend != "" ) {
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236 | $aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0,
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237 | $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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238 | }
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239 | }
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240 | } // Class
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241 | /* EOF */
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242 | ?>
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