[3594] | 1 | <?php |
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| 2 | /*======================================================================= |
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| 3 | // File: JPGRAPH_SPIDER.PHP |
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| 4 | // Description: Spider plot extension for JpGraph |
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| 5 | // Created: 2001-02-04 |
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| 6 | // Author: Johan Persson (johanp@aditus.nu) |
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| 7 | // Ver: $Id: jpgraph_spider.php 18250 2005-05-07 14:13:43Z ralfbecker $ |
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| 8 | // |
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| 9 | // License: This code is released under GPL 2.0 |
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| 10 | // Copyright (C) 2001 Johan Persson |
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| 11 | //======================================================================== |
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| 12 | */ |
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| 13 | |
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| 14 | //=================================================== |
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| 15 | // CLASS FontProp |
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| 16 | // Description: Utility class to enable the use |
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| 17 | // of a "title" instance variable for the spider axis. |
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| 18 | // This clas is only used to hold a font and a color |
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| 19 | // property for the axis title. |
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| 20 | //=================================================== |
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| 21 | class FontProp { |
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| 22 | var $font_family=FF_FONT1, $font_style=FS_NORMAL,$font_size=14,$font_color=array(0,0,0); |
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| 23 | function SetFont($family,$style=FS_NORMAL,$size=14) { |
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| 24 | $this->font_family = $family; |
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| 25 | $this->font_style = $style; |
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| 26 | $this->font_size = $size; |
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| 27 | } |
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| 28 | |
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| 29 | function SetColor($c) { |
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| 30 | $this->font_color = $c; |
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| 31 | } |
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| 32 | } |
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| 33 | |
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| 34 | class SpiderLogTicks extends Ticks { |
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| 35 | //--------------- |
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| 36 | // CONSTRUCTOR |
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| 37 | function SpiderLogTicks() { |
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| 38 | } |
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| 39 | //--------------- |
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| 40 | // PUBLIC METHODS |
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| 41 | |
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| 42 | // TODO: Add Argument grid |
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| 43 | function Stroke(&$aImg,&$grid,$aPos,$aAxisAngle,&$aScale,&$aMajPos,&$aMajLabel) { |
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| 44 | $start = $aScale->GetMinVal(); |
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| 45 | $limit = $aScale->GetMaxVal(); |
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| 46 | $nextMajor = 10*$start; |
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| 47 | $step = $nextMajor / 10.0; |
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| 48 | $count=1; |
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| 49 | |
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| 50 | $ticklen_maj=5; |
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| 51 | $dx_maj=round(sin($aAxisAngle)*$ticklen_maj); |
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| 52 | $dy_maj=round(cos($aAxisAngle)*$ticklen_maj); |
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| 53 | $ticklen_min=3; |
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| 54 | $dx_min=round(sin($aAxisAngle)*$ticklen_min); |
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| 55 | $dy_min=round(cos($aAxisAngle)*$ticklen_min); |
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| 56 | |
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| 57 | $aMajPos=array(); |
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| 58 | $aMajLabel=array(); |
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| 59 | |
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| 60 | if( $this->supress_first ) |
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| 61 | $aMajLabel[]=""; |
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| 62 | else |
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| 63 | $aMajLabel[]=$start; |
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| 64 | $yr=$aScale->RelTranslate($start); |
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| 65 | $xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0]; |
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| 66 | $yt=$aPos-round($yr*sin($aAxisAngle)); |
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| 67 | $aMajPos[]=$xt+2*$dx_maj; |
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| 68 | $aMajPos[]=$yt-$aImg->GetFontheight()/2; |
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| 69 | $grid[]=$xt; |
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| 70 | $grid[]=$yt; |
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| 71 | |
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| 72 | $aImg->SetLineWeight($this->weight); |
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| 73 | |
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| 74 | for($y=$start; $y<=$limit; $y+=$step,++$count ) { |
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| 75 | $yr=$aScale->RelTranslate($y); |
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| 76 | $xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0]; |
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| 77 | $yt=$aPos-round($yr*sin($aAxisAngle)); |
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| 78 | if( $count % 10 == 0 ) { |
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| 79 | $grid[]=$xt; |
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| 80 | $grid[]=$yt; |
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| 81 | $aMajPos[]=$xt+2*$dx_maj; |
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| 82 | $aMajPos[]=$yt-$aImg->GetFontheight()/2; |
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| 83 | if( !$this->supress_tickmarks ) { |
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| 84 | if( $this->majcolor!="" ) $aImg->PushColor($this->majcolor); |
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| 85 | $aImg->Line($xt+$dx_maj,$yt+$dy_maj,$xt-$dx_maj,$yt-$dy_maj); |
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| 86 | if( $this->majcolor!="" ) $aImg->PopColor(); |
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| 87 | } |
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| 88 | $aMajLabel[]=$nextMajor; |
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| 89 | $nextMajor *= 10; |
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| 90 | $step *= 10; |
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| 91 | $count=1; |
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| 92 | } |
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| 93 | else |
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| 94 | if( !$this->supress_minor_tickmarks ) { |
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| 95 | if( $this->mincolor!="" ) $aImg->PushColor($this->mincolor); |
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| 96 | $aImg->Line($xt+$dx_min,$yt+$dy_min,$xt-$dx_min,$yt-$dy_min); |
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| 97 | if( $this->mincolor!="" ) $aImg->PopColor(); |
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| 98 | } |
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| 99 | } |
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| 100 | } |
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| 101 | } |
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| 102 | |
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| 103 | class SpiderLinearTicks extends LinearTicks { |
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| 104 | //--------------- |
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| 105 | // CONSTRUCTOR |
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| 106 | function SpiderLinearTicks() { |
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| 107 | // Empty |
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| 108 | } |
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| 109 | |
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| 110 | //--------------- |
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| 111 | // PUBLIC METHODS |
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| 112 | |
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| 113 | // TODO: Add argument grid |
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| 114 | function Stroke(&$aImg,&$grid,$aPos,$aAxisAngle,&$aScale,&$aMajPos,&$aMajLabel) { |
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| 115 | // Prepare to draw linear ticks |
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| 116 | $maj_step_abs = abs($aScale->scale_factor*$this->major_step); |
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| 117 | $min_step_abs = abs($aScale->scale_factor*$this->minor_step); |
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| 118 | $nbrmaj = floor(($aScale->world_abs_size)/$maj_step_abs); |
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| 119 | $nbrmin = floor(($aScale->world_abs_size)/$min_step_abs); |
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| 120 | $skip = round($nbrmin/$nbrmaj); // Don't draw minor ontop of major |
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| 121 | |
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| 122 | // Draw major ticks |
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| 123 | $ticklen2=4; |
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| 124 | $dx=round(sin($aAxisAngle)*$ticklen2); |
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| 125 | $dy=round(cos($aAxisAngle)*$ticklen2); |
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| 126 | $label=$aScale->scale[0]+$this->major_step; |
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| 127 | |
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| 128 | $aImg->SetLineWeight($this->weight); |
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| 129 | |
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| 130 | for($i=1; $i<=$nbrmaj; ++$i) { |
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| 131 | $xt=round($i*$maj_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0]; |
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| 132 | $yt=$aPos-round($i*$maj_step_abs*sin($aAxisAngle)); |
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| 133 | $aMajLabel[]=$label; |
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| 134 | $label += $this->major_step; |
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| 135 | $grid[]=$xt; |
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| 136 | $grid[]=$yt; |
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| 137 | $aMajPos[($i-1)*2]=$xt+2*$dx; |
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| 138 | $aMajPos[($i-1)*2+1]=$yt-$aImg->GetFontheight()/2; |
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| 139 | if( !$this->supress_tickmarks ) { |
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| 140 | if( $this->majcolor!="" ) $aImg->PushColor($this->majcolor); |
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| 141 | $aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy); |
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| 142 | if( $this->majcolor!="" ) $aImg->PopColor(); |
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| 143 | } |
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| 144 | } |
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| 145 | |
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| 146 | // Draw minor ticks |
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| 147 | $ticklen2=3; |
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| 148 | $dx=round(sin($aAxisAngle)*$ticklen2); |
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| 149 | $dy=round(cos($aAxisAngle)*$ticklen2); |
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| 150 | if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) { |
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| 151 | if( $this->mincolor!="" ) $aImg->PushColor($this->mincolor); |
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| 152 | for($i=1; $i<=$nbrmin; ++$i) { |
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| 153 | if( ($i % $skip) == 0 ) continue; |
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| 154 | $xt=round($i*$min_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0]; |
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| 155 | $yt=$pos-round($i*$min_step_abs*sin($aAxisAngle)); |
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| 156 | $aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy); |
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| 157 | } |
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| 158 | if( $this->mincolor!="" ) $aImg->PopColor(); |
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| 159 | } |
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| 160 | } |
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| 161 | } |
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| 162 | |
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| 163 | |
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| 164 | |
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| 165 | //=================================================== |
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| 166 | // CLASS SpiderAxis |
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| 167 | // Description: Implements axis for the spider graph |
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| 168 | //=================================================== |
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| 169 | class SpiderAxis extends Axis { |
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| 170 | var $title_color="navy"; |
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| 171 | var $title=null; |
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| 172 | //--------------- |
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| 173 | // CONSTRUCTOR |
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| 174 | function SpiderAxis(&$img,&$aScale,$color=array(0,0,0)) { |
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| 175 | parent::Axis($img,$aScale,$color); |
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| 176 | $this->len=$img->plotheight; |
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| 177 | $this->font_size = FF_FONT1; |
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| 178 | $this->title = new FontProp(); |
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| 179 | $this->color = array(0,0,0); |
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| 180 | } |
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| 181 | //--------------- |
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| 182 | // PUBLIC METHODS |
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| 183 | function SetTickLabels($l) { |
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| 184 | $this->ticks_label = $l; |
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| 185 | } |
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| 186 | |
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| 187 | |
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| 188 | // Stroke the axis |
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| 189 | // $pos = Vertical position of axis |
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| 190 | // $aAxisAngle = Axis angle |
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| 191 | // $grid = Returns an array with positions used to draw the grid |
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| 192 | // $lf = Label flag, TRUE if the axis should have labels |
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| 193 | function Stroke($pos,$aAxisAngle,&$grid,$title,$lf) { |
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| 194 | $this->img->SetColor($this->color); |
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| 195 | |
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| 196 | // Determine end points for the axis |
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| 197 | $x=round($this->scale->world_abs_size*cos($aAxisAngle)+$this->scale->scale_abs[0]); |
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| 198 | $y=round($pos-$this->scale->world_abs_size*sin($aAxisAngle)); |
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| 199 | |
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| 200 | // Draw axis |
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| 201 | $this->img->SetColor($this->color); |
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| 202 | $this->img->SetLineWeight($this->weight); |
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| 203 | if( !$this->hide ) |
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| 204 | $this->img->Line($this->scale->scale_abs[0],$pos,$x,$y); |
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| 205 | |
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| 206 | $this->scale->ticks->Stroke($this->img,$grid,$pos,$aAxisAngle,$this->scale,$majpos,$majlabel); |
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| 207 | |
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| 208 | // Draw labels |
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| 209 | if( $lf && !$this->hide ) { |
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| 210 | $this->img->SetFont($this->font_family,$this->font_style,$this->font_size); |
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| 211 | $this->img->SetTextAlign("left","top"); |
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| 212 | $this->img->SetColor($this->color); |
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| 213 | |
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| 214 | // majpos contsins (x,y) coordinates for labels |
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| 215 | for($i=0; $i<count($majpos)/2; ++$i) { |
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| 216 | if( $this->ticks_label != null ) |
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| 217 | $this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$this->ticks_label[$i]); |
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| 218 | else |
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| 219 | $this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$majlabel[$i]); |
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| 220 | } |
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| 221 | } |
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| 222 | $this->_StrokeAxisTitle($pos,$aAxisAngle,$title); |
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| 223 | } |
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| 224 | //--------------- |
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| 225 | // PRIVATE METHODS |
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| 226 | |
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| 227 | function _StrokeAxisTitle($pos,$aAxisAngle,$title) { |
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| 228 | // Draw title of this axis |
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| 229 | $this->img->SetFont($this->title->font_family,$this->title->font_style,$this->title->font_size); |
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| 230 | $this->img->SetColor($this->title->font_color); |
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| 231 | $marg=6; |
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| 232 | $xt=round(($this->scale->world_abs_size+$marg)*cos($aAxisAngle)+$this->scale->scale_abs[0]); |
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| 233 | $yt=round($pos-($this->scale->world_abs_size+$marg)*sin($aAxisAngle)); |
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| 234 | |
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| 235 | // Position the axis title. |
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| 236 | // dx, dy is the offset from the top left corner of the bounding box that sorrounds the text |
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| 237 | // that intersects with the extension of the corresponding axis. The code looks a little |
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| 238 | // bit messy but this is really the only way of having a reasonable position of the |
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| 239 | // axis titles. |
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| 240 | $h=$this->img->GetFontHeight(); |
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| 241 | $w=$this->img->GetTextWidth($title); |
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| 242 | while( $aAxisAngle > 2*M_PI ) $aAxisAngle -= 2*M_PI; |
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| 243 | if( $aAxisAngle>=7*M_PI/4 || $aAxisAngle <= M_PI/4 ) $dx=0; |
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| 244 | if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dx=($aAxisAngle-M_PI/4)*2/M_PI; |
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| 245 | if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dx=1; |
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| 246 | if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dx=(1-($aAxisAngle-M_PI*5/4)*2/M_PI); |
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| 247 | |
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| 248 | if( $aAxisAngle>=7*M_PI/4 ) $dy=(($aAxisAngle-M_PI)-3*M_PI/4)*2/M_PI; |
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| 249 | if( $aAxisAngle<=M_PI/4 ) $dy=(1-$aAxisAngle*2/M_PI); |
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| 250 | if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dy=1; |
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| 251 | if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dy=(1-($aAxisAngle-3*M_PI/4)*2/M_PI); |
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| 252 | if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dy=0; |
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| 253 | |
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| 254 | if( !$this->hide ) |
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| 255 | $this->img->StrokeText($xt-$dx*$w,$yt-$dy*$h,$title); |
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| 256 | |
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| 257 | } |
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| 258 | |
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| 259 | |
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| 260 | } // Class |
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| 261 | |
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| 262 | |
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| 263 | //=================================================== |
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| 264 | // CLASS SpiderGrid |
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| 265 | // Description: Draws grid for the spider graph |
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| 266 | //=================================================== |
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| 267 | class SpiderGrid extends Grid { |
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| 268 | //------------ |
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| 269 | // CONSTRUCTOR |
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| 270 | function SpiderGrid() { |
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| 271 | } |
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| 272 | |
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| 273 | //---------------- |
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| 274 | // PRIVATE METHODS |
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| 275 | function Stroke(&$img,&$grid) { |
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| 276 | if( !$this->show ) return; |
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| 277 | $nbrticks = count($grid[0])/2; |
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| 278 | $nbrpnts = count($grid); |
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| 279 | $img->SetColor($this->grid_color); |
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| 280 | $img->SetLineWeight($this->weight); |
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| 281 | for($i=0; $i<$nbrticks; ++$i) { |
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| 282 | for($j=0; $j<$nbrpnts; ++$j) { |
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| 283 | $pnts[$j*2]=$grid[$j][$i*2]; |
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| 284 | $pnts[$j*2+1]=$grid[$j][$i*2+1]; |
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| 285 | } |
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| 286 | for($k=0; $k<$nbrpnts; ++$k ){ |
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| 287 | $l=($k+1)%$nbrpnts; |
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| 288 | if( $this->type == "solid" ) |
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| 289 | $img->Line($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1]); |
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| 290 | elseif( $this->type == "dotted" ) |
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| 291 | $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],1,6); |
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| 292 | elseif( $this->type == "dashed" ) |
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| 293 | $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],2,4); |
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| 294 | elseif( $this->type == "longdashed" ) |
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| 295 | $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],8,6); |
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| 296 | } |
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| 297 | $pnts=array(); |
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| 298 | } |
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| 299 | } |
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| 300 | } // Class |
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| 301 | |
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| 302 | |
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| 303 | //=================================================== |
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| 304 | // CLASS SpiderPlot |
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| 305 | // Description: Plot a spiderplot |
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| 306 | //=================================================== |
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| 307 | class SpiderPlot { |
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| 308 | var $data=array(); |
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| 309 | var $fill=false, $fill_color=array(200,170,180); |
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| 310 | var $color=array(0,0,0); |
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| 311 | var $legend=""; |
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| 312 | var $weight=1; |
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| 313 | //--------------- |
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| 314 | // CONSTRUCTOR |
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| 315 | function SpiderPlot($data) { |
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| 316 | $this->data = $data; |
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| 317 | } |
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| 318 | |
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| 319 | //--------------- |
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| 320 | // PUBLIC METHODS |
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| 321 | function Min() { |
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| 322 | return Min($this->data); |
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| 323 | } |
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| 324 | |
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| 325 | function Max() { |
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| 326 | return Max($this->data); |
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| 327 | } |
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| 328 | |
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| 329 | function SetLegend($legend) { |
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| 330 | $this->legend=$legend; |
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| 331 | } |
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| 332 | |
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| 333 | function SetFill($f=true) { |
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| 334 | $this->fill = $f; |
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| 335 | } |
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| 336 | |
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| 337 | function SetLineWeight($w) { |
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| 338 | $this->weight=$w; |
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| 339 | } |
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| 340 | |
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| 341 | function SetColor($color,$fill_color=array(160,170,180)) { |
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| 342 | $this->color = $color; |
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| 343 | $this->fill_color = $fill_color; |
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| 344 | } |
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| 345 | |
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| 346 | function GetCSIMareas() { |
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| 347 | JpGraphError::Raise("JpGraph Error: Client side image maps not supported for SpiderPlots."); |
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| 348 | } |
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| 349 | |
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| 350 | function Stroke(&$img, $pos, &$scale, $startangle) { |
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| 351 | $nbrpnts = count($this->data); |
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| 352 | $astep=2*M_PI/$nbrpnts; |
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| 353 | $a=$startangle; |
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| 354 | |
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| 355 | // Rotate each point to the correct axis-angle |
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| 356 | // TODO: Update for LogScale |
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| 357 | for($i=0; $i<$nbrpnts; ++$i) { |
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| 358 | //$c=$this->data[$i]; |
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| 359 | $cs=$scale->RelTranslate($this->data[$i]); |
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| 360 | $x=round($cs*cos($a)+$scale->scale_abs[0]); |
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| 361 | $y=round($pos-$cs*sin($a)); |
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| 362 | /* |
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| 363 | $c=log10($c); |
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| 364 | $x=round(($c-$scale->scale[0])*$scale->scale_factor*cos($a)+$scale->scale_abs[0]); |
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| 365 | $y=round($pos-($c-$scale->scale[0])*$scale->scale_factor*sin($a)); |
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| 366 | */ |
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| 367 | $pnts[$i*2]=$x; |
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| 368 | $pnts[$i*2+1]=$y; |
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| 369 | $a += $astep; |
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| 370 | } |
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| 371 | if( $this->fill ) { |
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| 372 | $img->SetColor($this->fill_color); |
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| 373 | $img->FilledPolygon($pnts); |
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| 374 | } |
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| 375 | $img->SetLineWeight($this->weight); |
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| 376 | $img->SetColor($this->color); |
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| 377 | $img->Polygon($pnts); |
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| 378 | } |
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| 379 | |
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| 380 | //--------------- |
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| 381 | // PRIVATE METHODS |
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| 382 | function GetCount() { |
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| 383 | return count($this->data); |
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| 384 | } |
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| 385 | |
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| 386 | function Legend(&$graph) { |
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| 387 | if( $this->legend=="" ) return; |
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| 388 | if( $this->fill ) |
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| 389 | $graph->legend->Add($this->legend,$this->fill_color); |
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| 390 | else |
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| 391 | $graph->legend->Add($this->legend,$this->color); |
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| 392 | } |
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| 393 | |
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| 394 | } // Class |
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| 395 | |
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| 396 | //=================================================== |
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| 397 | // CLASS SpiderGraph |
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| 398 | // Description: Main container for a spider graph |
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| 399 | //=================================================== |
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| 400 | class SpiderGraph extends Graph { |
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| 401 | var $posx; |
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| 402 | var $posy; |
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| 403 | var $len; |
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| 404 | var $plots=null, $axis_title=null; |
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| 405 | var $grid,$axis=null; |
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| 406 | //--------------- |
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| 407 | // CONSTRUCTOR |
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| 408 | function SpiderGraph($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) { |
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| 409 | $this->Graph($width,$height,$cachedName,$timeout,$inline); |
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| 410 | $this->posx=$width/2; |
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| 411 | $this->posy=$height/2; |
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| 412 | $this->len=min($width,$height)*0.35; |
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| 413 | $this->SetColor(array(255,255,255)); |
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| 414 | $this->SetTickDensity(TICKD_NORMAL); |
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| 415 | $this->SetScale("lin"); |
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| 416 | } |
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| 417 | |
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| 418 | //--------------- |
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| 419 | // PUBLIC METHODS |
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| 420 | function SupressTickMarks($f=true) { |
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| 421 | $this->axis->scale->ticks->SupressTickMarks($f); |
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| 422 | } |
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| 423 | |
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| 424 | function SetScale($axtype,$ymin=1,$ymax=1) { |
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| 425 | if( $axtype != "lin" && $axtype != "log" ) { |
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| 426 | JpGraphError::Raise("Illegal scale for spiderplot ($axtype). Must be \"lin\" or \"log\""); |
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| 427 | } |
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| 428 | if( $axtype=="lin" ) { |
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| 429 | $this->yscale = & new LinearScale(1,1); |
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| 430 | $this->yscale->ticks = & new SpiderLinearTicks(); |
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| 431 | $this->yscale->ticks->SupressMinorTickMarks(); |
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| 432 | } |
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| 433 | elseif( $axtype=="log" ) { |
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| 434 | $this->yscale = & new LogScale(1,1); |
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| 435 | $this->yscale->ticks = & new SpiderLogTicks(); |
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| 436 | //JpGraphError::Raise("JpGraph Error: Logarithmic spider plots are not yet supported"); |
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| 437 | } |
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| 438 | |
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| 439 | $this->axis = & new SpiderAxis($this->img,$this->yscale); |
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| 440 | $this->grid = & new SpiderGrid(); |
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| 441 | } |
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| 442 | |
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| 443 | function SetPlotSize($s) { |
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| 444 | if( $s<0.1 || $s>1 ) |
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| 445 | JpGraphError::Raise("JpGraph Error: Spider Plot size must be between 0.1 and 1. (Your value=$s)"); |
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| 446 | $this->len=min($this->img->width,$this->img->height)*$s/2; |
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| 447 | } |
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| 448 | |
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| 449 | function SetTickDensity($densy=TICKD_NORMAL) { |
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| 450 | $this->ytick_factor=25; |
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| 451 | switch( $densy ) { |
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| 452 | case TICKD_DENSE: |
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| 453 | $this->ytick_factor=12; |
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| 454 | break; |
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| 455 | case TICKD_NORMAL: |
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| 456 | $this->ytick_factor=25; |
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| 457 | break; |
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| 458 | case TICKD_SPARSE: |
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| 459 | $this->ytick_factor=40; |
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| 460 | break; |
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| 461 | case TICKD_VERYSPARSE: |
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| 462 | $this->ytick_factor=70; |
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| 463 | break; |
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| 464 | default: |
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| 465 | JpGraphError::Raise("Unsupported Tick density: $densy"); |
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| 466 | } |
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| 467 | } |
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| 468 | |
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| 469 | function SetCenter($px,$py=0.5) { |
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| 470 | assert($px > 0 && $py > 0 ); |
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| 471 | $this->posx=$this->img->width*$px; |
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| 472 | $this->posy=$this->img->height*$py; |
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| 473 | } |
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| 474 | |
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| 475 | function SetColor($c) { |
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| 476 | $this->SetMarginColor($c); |
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| 477 | } |
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| 478 | |
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| 479 | function SetTitles($title) { |
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| 480 | $this->axis_title = $title; |
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| 481 | } |
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| 482 | |
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| 483 | function Add(&$splot) { |
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| 484 | $this->plots[]=$splot; |
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| 485 | } |
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| 486 | |
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| 487 | function GetPlotsYMinMax() { |
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| 488 | $min=$this->plots[0]->Min(); |
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| 489 | $max=$this->plots[0]->Max(); |
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| 490 | foreach( $this->plots as $p ) { |
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| 491 | $max=max($max,$p->Max()); |
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| 492 | $min=min($min,$p->Min()); |
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| 493 | } |
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| 494 | if( $min < 0 ) |
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| 495 | JpGraphError::Raise("JpGraph Error: Minimum data $min (Spider plots only makes sence to use when all data points > 0)"); |
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| 496 | return array($min,$max); |
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| 497 | } |
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| 498 | |
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| 499 | // Stroke the Spider graph |
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| 500 | function Stroke($aStrokeFileName="") { |
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| 501 | // Set Y-scale |
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| 502 | if( !$this->yscale->IsSpecified() && |
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| 503 | count($this->plots)>0 ) { |
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| 504 | list($min,$max) = $this->GetPlotsYMinMax(); |
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| 505 | $this->yscale->AutoScale($this->img,0,$max,$this->len/$this->ytick_factor); |
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| 506 | } |
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| 507 | // Set start position end length of scale (in absolute pixels) |
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| 508 | $this->yscale->SetConstants($this->posx,$this->len); |
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| 509 | |
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| 510 | // We need as many axis as there are data points |
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| 511 | $nbrpnts=$this->plots[0]->GetCount(); |
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| 512 | |
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| 513 | // If we have no titles just number the axis 1,2,3,... |
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| 514 | if( $this->axis_title==null ) { |
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| 515 | for($i=0; $i<$nbrpnts; ++$i ) |
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| 516 | $this->axis_title[$i] = $i+1; |
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| 517 | } |
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| 518 | elseif(count($this->axis_title)<$nbrpnts) |
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| 519 | JpGraphError::Raise("JpGraph: Number of titles does not match number of points in plot."); |
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| 520 | for($i=0; $i<count($this->plots); ++$i ) |
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| 521 | if( $nbrpnts != $this->plots[$i]->GetCount() ) |
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| 522 | JpGraphError::Raise("JpGraph: Each spider plot must have the same number of data points."); |
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| 523 | |
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| 524 | $this->StrokeFrame(); |
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| 525 | $astep=2*M_PI/$nbrpnts; |
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| 526 | |
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| 527 | // Prepare legends |
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| 528 | for($i=0; $i<count($this->plots); ++$i) |
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| 529 | $this->plots[$i]->Legend($this); |
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| 530 | $this->legend->Stroke($this->img); |
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| 531 | |
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| 532 | // Plot points |
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| 533 | $a=M_PI/2; |
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| 534 | for($i=0; $i<count($this->plots); ++$i ) |
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| 535 | $this->plots[$i]->Stroke($this->img, $this->posy, $this->yscale, $a); |
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| 536 | |
---|
| 537 | // Draw axis and grid |
---|
| 538 | for( $i=0,$a=M_PI/2; $i<$nbrpnts; ++$i, $a+=$astep ) { |
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| 539 | $this->axis->Stroke($this->posy,$a,$grid[$i],$this->axis_title[$i],$i==0); |
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| 540 | } |
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| 541 | $this->grid->Stroke($this->img,$grid); |
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| 542 | $this->title->Center($this->img->left_margin,$this->img->width-$this->img->right_margin,5); |
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| 543 | $this->title->Stroke($this->img); |
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| 544 | |
---|
| 545 | // Stroke texts |
---|
| 546 | if( $this->texts != null ) |
---|
| 547 | foreach( $this->texts as $t) |
---|
| 548 | $t->Stroke($this->img); |
---|
| 549 | |
---|
| 550 | |
---|
| 551 | // Finally output the image |
---|
| 552 | $this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName); |
---|
| 553 | } |
---|
| 554 | } // Class |
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| 555 | |
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| 556 | /* EOF */ |
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| 557 | ?> |
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