| [2] | 1 | <?php
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| 2 | /*=======================================================================
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| [284] | 3 | // File: JPGRAPH_LINE.PHP
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| 4 | // Description: Line plot extension for JpGraph
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| 5 | // Created: 2001-01-08
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| 6 | // Ver: $Id: jpgraph_line.php 1921 2009-12-11 11:46:39Z 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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| [2] | 11 |
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| 12 | require_once ('jpgraph_plotmark.inc.php');
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| 13 |
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| 14 | // constants for the (filled) area
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| 15 | DEFINE("LP_AREA_FILLED", true);
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| 16 | DEFINE("LP_AREA_NOT_FILLED", false);
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| 17 | DEFINE("LP_AREA_BORDER",false);
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| 18 | DEFINE("LP_AREA_NO_BORDER",true);
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| 19 |
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| 20 | //===================================================
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| 21 | // CLASS LinePlot
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| [284] | 22 | // Description:
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| [2] | 23 | //===================================================
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| 24 | class LinePlot extends Plot{
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| 25 | public $mark=null;
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| 26 | protected $filled=false;
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| 27 | protected $fill_color='blue';
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| 28 | protected $step_style=false, $center=false;
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| [284] | 29 | protected $line_style=1; // Default to solid
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| [2] | 30 | protected $filledAreas = array(); // array of arrays(with min,max,col,filled in them)
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| 31 | public $barcenter=false; // When we mix line and bar. Should we center the line in the bar.
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| [284] | 32 | protected $fillFromMin = false, $fillFromMax = false;
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| [2] | 33 | protected $fillgrad=false,$fillgrad_fromcolor='navy',$fillgrad_tocolor='silver',$fillgrad_numcolors=100;
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| 34 | protected $iFastStroke=false;
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| 35 |
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| [284] | 36 | //---------------
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| 37 | // CONSTRUCTOR
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| 38 | function __construct($datay,$datax=false) {
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| 39 | parent::__construct($datay,$datax);
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| 40 | $this->mark = new PlotMark() ;
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| 41 | $this->color = ColorFactory::getColor();
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| 42 | $this->fill_color = $this->color;
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| [2] | 43 | }
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| [284] | 44 | //---------------
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| 45 | // PUBLIC METHODS
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| [2] | 46 |
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| [284] | 47 | function SetFilled($aFlg=true) {
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| 48 | $this->filled = $aFlg;
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| [2] | 49 | }
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| [284] | 50 |
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| [2] | 51 | function SetBarCenter($aFlag=true) {
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| [284] | 52 | $this->barcenter=$aFlag;
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| [2] | 53 | }
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| 54 |
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| 55 | function SetStyle($aStyle) {
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| [284] | 56 | $this->line_style=$aStyle;
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| [2] | 57 | }
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| [284] | 58 |
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| [2] | 59 | function SetStepStyle($aFlag=true) {
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| [284] | 60 | $this->step_style = $aFlag;
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| [2] | 61 | }
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| [284] | 62 |
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| [2] | 63 | function SetColor($aColor) {
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| [284] | 64 | parent::SetColor($aColor);
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| [2] | 65 | }
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| [284] | 66 |
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| [2] | 67 | function SetFillFromYMin($f=true) {
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| [284] | 68 | $this->fillFromMin = $f ;
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| [2] | 69 | }
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| [284] | 70 |
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| 71 | function SetFillFromYMax($f=true) {
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| 72 | $this->fillFromMax = $f ;
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| 73 | }
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| 74 |
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| [2] | 75 | function SetFillColor($aColor,$aFilled=true) {
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| [284] | 76 | //$this->color = $aColor;
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| 77 | $this->fill_color=$aColor;
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| 78 | $this->filled=$aFilled;
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| [2] | 79 | }
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| 80 |
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| 81 | function SetFillGradient($aFromColor,$aToColor,$aNumColors=100,$aFilled=true) {
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| [284] | 82 | $this->fillgrad_fromcolor = $aFromColor;
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| 83 | $this->fillgrad_tocolor = $aToColor;
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| 84 | $this->fillgrad_numcolors = $aNumColors;
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| 85 | $this->filled = $aFilled;
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| 86 | $this->fillgrad = true;
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| [2] | 87 | }
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| [284] | 88 |
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| [2] | 89 | function Legend($graph) {
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| [284] | 90 | if( $this->legend!="" ) {
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| 91 | if( $this->filled && !$this->fillgrad ) {
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| 92 | $graph->legend->Add($this->legend,
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| 93 | $this->fill_color,$this->mark,0,
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| 94 | $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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| 95 | }
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| 96 | elseif( $this->fillgrad ) {
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| 97 | $color=array($this->fillgrad_fromcolor,$this->fillgrad_tocolor);
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| 98 | // In order to differentiate between gradients and cooors specified as an RGB triple
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| 99 | $graph->legend->Add($this->legend,$color,"",-2 /* -GRAD_HOR */,
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| 100 | $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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| 101 | } else {
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| 102 | $graph->legend->Add($this->legend,
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| 103 | $this->color,$this->mark,$this->line_style,
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| 104 | $this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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| 105 | }
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| 106 | }
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| [2] | 107 | }
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| 108 |
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| 109 | function AddArea($aMin=0,$aMax=0,$aFilled=LP_AREA_NOT_FILLED,$aColor="gray9",$aBorder=LP_AREA_BORDER) {
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| [284] | 110 | if($aMin > $aMax) {
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| 111 | // swap
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| 112 | $tmp = $aMin;
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| 113 | $aMin = $aMax;
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| 114 | $aMax = $tmp;
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| 115 | }
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| 116 | $this->filledAreas[] = array($aMin,$aMax,$aColor,$aFilled,$aBorder);
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| [2] | 117 | }
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| [284] | 118 |
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| [2] | 119 | // Gets called before any axis are stroked
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| 120 | function PreStrokeAdjust($graph) {
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| 121 |
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| [284] | 122 | // If another plot type have already adjusted the
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| 123 | // offset we don't touch it.
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| 124 | // (We check for empty in case the scale is a log scale
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| 125 | // and hence doesn't contain any xlabel_offset)
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| 126 | if( empty($graph->xaxis->scale->ticks->xlabel_offset) || $graph->xaxis->scale->ticks->xlabel_offset == 0 ) {
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| 127 | if( $this->center ) {
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| 128 | ++$this->numpoints;
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| 129 | $a=0.5; $b=0.5;
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| 130 | } else {
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| 131 | $a=0; $b=0;
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| 132 | }
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| 133 | $graph->xaxis->scale->ticks->SetXLabelOffset($a);
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| 134 | $graph->SetTextScaleOff($b);
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| 135 | //$graph->xaxis->scale->ticks->SupressMinorTickMarks();
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| 136 | }
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| [2] | 137 | }
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| [284] | 138 |
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| [2] | 139 | function SetFastStroke($aFlg=true) {
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| [284] | 140 | $this->iFastStroke = $aFlg;
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| [2] | 141 | }
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| 142 |
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| 143 | function FastStroke($img,$xscale,$yscale,$aStartPoint=0,$exist_x=true) {
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| [284] | 144 | // An optimized stroke for many data points with no extra
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| 145 | // features but 60% faster. You can't have values or line styles, or null
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| 146 | // values in plots.
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| 147 | $numpoints=count($this->coords[0]);
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| 148 | if( $this->barcenter ) {
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| 149 | $textadj = 0.5-$xscale->text_scale_off;
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| 150 | }
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| 151 | else {
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| 152 | $textadj = 0;
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| 153 | }
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| [2] | 154 |
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| [284] | 155 | $img->SetColor($this->color);
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| 156 | $img->SetLineWeight($this->weight);
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| 157 | $pnts=$aStartPoint;
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| 158 | while( $pnts < $numpoints ) {
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| 159 | if( $exist_x ) {
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| 160 | $x=$this->coords[1][$pnts];
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| 161 | }
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| 162 | else {
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| 163 | $x=$pnts+$textadj;
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| 164 | }
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| 165 | $xt = $xscale->Translate($x);
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| 166 | $y=$this->coords[0][$pnts];
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| 167 | $yt = $yscale->Translate($y);
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| 168 | if( is_numeric($y) ) {
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| 169 | $cord[] = $xt;
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| 170 | $cord[] = $yt;
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| 171 | }
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| 172 | elseif( $y == '-' && $pnts > 0 ) {
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| 173 | // Just ignore
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| 174 | }
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| 175 | else {
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| 176 | JpGraphError::RaiseL(10002);//('Plot too complicated for fast line Stroke. Use standard Stroke()');
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| 177 | }
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| 178 | ++$pnts;
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| 179 | } // WHILE
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| [2] | 180 |
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| [284] | 181 | $img->Polygon($cord,false,true);
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| [2] | 182 | }
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| [284] | 183 |
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| [2] | 184 | function Stroke($img,$xscale,$yscale) {
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| [284] | 185 | $idx=0;
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| 186 | $numpoints=count($this->coords[0]);
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| 187 | if( isset($this->coords[1]) ) {
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| 188 | if( count($this->coords[1])!=$numpoints ) {
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| 189 | JpGraphError::RaiseL(2003,count($this->coords[1]),$numpoints);
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| 190 | //("Number of X and Y points are not equal. Number of X-points:".count($this->coords[1])." Number of Y-points:$numpoints");
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| 191 | }
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| 192 | else {
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| 193 | $exist_x = true;
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| 194 | }
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| 195 | }
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| 196 | else {
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| 197 | $exist_x = false;
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| 198 | }
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| [2] | 199 |
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| [284] | 200 | if( $this->barcenter ) {
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| 201 | $textadj = 0.5-$xscale->text_scale_off;
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| 202 | }
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| 203 | else {
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| 204 | $textadj = 0;
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| 205 | }
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| [2] | 206 |
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| [284] | 207 | // Find the first numeric data point
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| 208 | $startpoint=0;
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| 209 | while( $startpoint < $numpoints && !is_numeric($this->coords[0][$startpoint]) ) {
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| 210 | ++$startpoint;
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| 211 | }
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| [2] | 212 |
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| [284] | 213 | // Bail out if no data points
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| 214 | if( $startpoint == $numpoints ) return;
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| [2] | 215 |
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| [284] | 216 | if( $this->iFastStroke ) {
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| 217 | $this->FastStroke($img,$xscale,$yscale,$startpoint,$exist_x);
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| 218 | return;
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| 219 | }
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| [2] | 220 |
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| [284] | 221 | if( $exist_x ) {
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| 222 | $xs=$this->coords[1][$startpoint];
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| 223 | }
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| 224 | else {
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| 225 | $xs= $textadj+$startpoint;
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| 226 | }
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| [2] | 227 |
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| [284] | 228 | $img->SetStartPoint($xscale->Translate($xs),
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| 229 | $yscale->Translate($this->coords[0][$startpoint]));
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| [2] | 230 |
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| [284] | 231 | if( $this->filled ) {
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| 232 | if( $this->fillFromMax ) {
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| 233 | //$max = $yscale->GetMaxVal();
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| 234 | $cord[$idx++] = $xscale->Translate($xs);
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| 235 | $cord[$idx++] = $yscale->scale_abs[1];
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| 236 | }
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| 237 | else {
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| 238 | $min = $yscale->GetMinVal();
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| 239 | if( $min > 0 || $this->fillFromMin ) {
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| 240 | $fillmin = $yscale->scale_abs[0];//Translate($min);
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| 241 | }
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| 242 | else {
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| 243 | $fillmin = $yscale->Translate(0);
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| 244 | }
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| [2] | 245 |
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| [284] | 246 | $cord[$idx++] = $xscale->Translate($xs);
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| 247 | $cord[$idx++] = $fillmin;
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| 248 | }
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| 249 | }
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| 250 | $xt = $xscale->Translate($xs);
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| 251 | $yt = $yscale->Translate($this->coords[0][$startpoint]);
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| 252 | $cord[$idx++] = $xt;
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| 253 | $cord[$idx++] = $yt;
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| 254 | $yt_old = $yt;
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| 255 | $xt_old = $xt;
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| 256 | $y_old = $this->coords[0][$startpoint];
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| [2] | 257 |
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| [284] | 258 | $this->value->Stroke($img,$this->coords[0][$startpoint],$xt,$yt);
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| [2] | 259 |
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| [284] | 260 | $img->SetColor($this->color);
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| 261 | $img->SetLineWeight($this->weight);
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| 262 | $img->SetLineStyle($this->line_style);
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| 263 | $pnts=$startpoint+1;
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| 264 | $firstnonumeric = false;
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| [2] | 265 |
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| 266 |
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| [284] | 267 | while( $pnts < $numpoints ) {
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| [2] | 268 |
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| [284] | 269 | if( $exist_x ) {
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| 270 | $x=$this->coords[1][$pnts];
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| 271 | }
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| 272 | else {
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| 273 | $x=$pnts+$textadj;
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| 274 | }
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| 275 | $xt = $xscale->Translate($x);
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| 276 | $yt = $yscale->Translate($this->coords[0][$pnts]);
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| [2] | 277 |
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| [284] | 278 | $y=$this->coords[0][$pnts];
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| 279 | if( $this->step_style ) {
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| 280 | // To handle null values within step style we need to record the
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| 281 | // first non numeric value so we know from where to start if the
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| 282 | // non value is '-'.
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| 283 | if( is_numeric($y) ) {
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| 284 | $firstnonumeric = false;
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| 285 | if( is_numeric($y_old) ) {
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| 286 | $img->StyleLine($xt_old,$yt_old,$xt,$yt_old);
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| 287 | $img->StyleLine($xt,$yt_old,$xt,$yt);
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| 288 | }
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| 289 | elseif( $y_old == '-' ) {
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| 290 | $img->StyleLine($xt_first,$yt_first,$xt,$yt_first);
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| 291 | $img->StyleLine($xt,$yt_first,$xt,$yt);
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| 292 | }
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| 293 | else {
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| 294 | $yt_old = $yt;
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| 295 | $xt_old = $xt;
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| 296 | }
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| 297 | $cord[$idx++] = $xt;
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| 298 | $cord[$idx++] = $yt_old;
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| 299 | $cord[$idx++] = $xt;
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| 300 | $cord[$idx++] = $yt;
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| 301 | }
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| 302 | elseif( $firstnonumeric==false ) {
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| 303 | $firstnonumeric = true;
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| 304 | $yt_first = $yt_old;
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| 305 | $xt_first = $xt_old;
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| 306 | }
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| 307 | }
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| 308 | else {
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| 309 | $tmp1=$y;
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| 310 | $prev=$this->coords[0][$pnts-1];
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| 311 | if( $tmp1==='' || $tmp1===NULL || $tmp1==='X' ) $tmp1 = 'x';
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| 312 | if( $prev==='' || $prev===null || $prev==='X' ) $prev = 'x';
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| [2] | 313 |
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| [284] | 314 | if( is_numeric($y) || (is_string($y) && $y != '-') ) {
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| 315 | if( is_numeric($y) && (is_numeric($prev) || $prev === '-' ) ) {
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| 316 | $img->StyleLineTo($xt,$yt);
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| 317 | }
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| 318 | else {
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| 319 | $img->SetStartPoint($xt,$yt);
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| 320 | }
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| 321 | }
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| 322 | if( $this->filled && $tmp1 !== '-' ) {
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| 323 | if( $tmp1 === 'x' ) {
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| 324 | $cord[$idx++] = $cord[$idx-3];
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| 325 | $cord[$idx++] = $fillmin;
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| 326 | }
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| 327 | elseif( $prev === 'x' ) {
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| 328 | $cord[$idx++] = $xt;
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| 329 | $cord[$idx++] = $fillmin;
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| 330 | $cord[$idx++] = $xt;
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| 331 | $cord[$idx++] = $yt;
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| 332 | }
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| 333 | else {
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| 334 | $cord[$idx++] = $xt;
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| 335 | $cord[$idx++] = $yt;
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| 336 | }
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| 337 | }
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| 338 | else {
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| 339 | if( is_numeric($tmp1) && (is_numeric($prev) || $prev === '-' ) ) {
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| 340 | $cord[$idx++] = $xt;
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| 341 | $cord[$idx++] = $yt;
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| 342 | }
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| 343 | }
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| 344 | }
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| 345 | $yt_old = $yt;
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| 346 | $xt_old = $xt;
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| 347 | $y_old = $y;
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| [2] | 348 |
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| [284] | 349 | $this->StrokeDataValue($img,$this->coords[0][$pnts],$xt,$yt);
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| [2] | 350 |
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| [284] | 351 | ++$pnts;
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| 352 | }
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| [2] | 353 |
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| [284] | 354 | if( $this->filled ) {
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| 355 | $cord[$idx++] = $xt;
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| 356 | if( $this->fillFromMax ) {
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| 357 | $cord[$idx++] = $yscale->scale_abs[1];
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| 358 | }
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| 359 | else {
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| 360 | if( $min > 0 || $this->fillFromMin ) {
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| 361 | $cord[$idx++] = $yscale->Translate($min);
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| 362 | }
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| 363 | else {
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| 364 | $cord[$idx++] = $yscale->Translate(0);
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| 365 | }
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| 366 | }
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| 367 | if( $this->fillgrad ) {
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| 368 | $img->SetLineWeight(1);
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| 369 | $grad = new Gradient($img);
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| 370 | $grad->SetNumColors($this->fillgrad_numcolors);
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| 371 | $grad->FilledFlatPolygon($cord,$this->fillgrad_fromcolor,$this->fillgrad_tocolor);
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| 372 | $img->SetLineWeight($this->weight);
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| 373 | }
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| 374 | else {
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| 375 | $img->SetColor($this->fill_color);
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| 376 | $img->FilledPolygon($cord);
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| 377 | }
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| 378 | if( $this->weight > 0 ) {
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| 379 | $img->SetLineWeight($this->weight);
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| 380 | $img->SetColor($this->color);
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| 381 | // Remove first and last coordinate before drawing the line
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| 382 | // sine we otherwise get the vertical start and end lines which
|
|---|
| 383 | // doesn't look appropriate
|
|---|
| 384 | $img->Polygon(array_slice($cord,2,count($cord)-4));
|
|---|
| 385 | }
|
|---|
| 386 | }
|
|---|
| [2] | 387 |
|
|---|
| [284] | 388 | if(!empty($this->filledAreas)) {
|
|---|
| [2] | 389 |
|
|---|
| [284] | 390 | $minY = $yscale->Translate($yscale->GetMinVal());
|
|---|
| 391 | $factor = ($this->step_style ? 4 : 2);
|
|---|
| [2] | 392 |
|
|---|
| [284] | 393 | for($i = 0; $i < sizeof($this->filledAreas); ++$i) {
|
|---|
| 394 | // go through all filled area elements ordered by insertion
|
|---|
| 395 | // fill polygon array
|
|---|
| 396 | $areaCoords[] = $cord[$this->filledAreas[$i][0] * $factor];
|
|---|
| 397 | $areaCoords[] = $minY;
|
|---|
| [2] | 398 |
|
|---|
| [284] | 399 | $areaCoords =
|
|---|
| 400 | array_merge($areaCoords,
|
|---|
| 401 | array_slice($cord,
|
|---|
| 402 | $this->filledAreas[$i][0] * $factor,
|
|---|
| 403 | ($this->filledAreas[$i][1] - $this->filledAreas[$i][0] + ($this->step_style ? 0 : 1)) * $factor));
|
|---|
| 404 | $areaCoords[] = $areaCoords[sizeof($areaCoords)-2]; // last x
|
|---|
| 405 | $areaCoords[] = $minY; // last y
|
|---|
| [2] | 406 |
|
|---|
| [284] | 407 | if($this->filledAreas[$i][3]) {
|
|---|
| 408 | $img->SetColor($this->filledAreas[$i][2]);
|
|---|
| 409 | $img->FilledPolygon($areaCoords);
|
|---|
| 410 | $img->SetColor($this->color);
|
|---|
| 411 | }
|
|---|
| 412 | // Check if we should draw the frame.
|
|---|
| 413 | // If not we still re-draw the line since it might have been
|
|---|
| 414 | // partially overwritten by the filled area and it doesn't look
|
|---|
| 415 | // very good.
|
|---|
| 416 | if( $this->filledAreas[$i][4] ) {
|
|---|
| 417 | $img->Polygon($areaCoords);
|
|---|
| 418 | }
|
|---|
| 419 | else {
|
|---|
| 420 | $img->Polygon($cord);
|
|---|
| 421 | }
|
|---|
| [2] | 422 |
|
|---|
| [284] | 423 | $areaCoords = array();
|
|---|
| 424 | }
|
|---|
| 425 | }
|
|---|
| [2] | 426 |
|
|---|
| [284] | 427 | if( $this->mark->type == -1 || $this->mark->show == false )
|
|---|
| 428 | return;
|
|---|
| 429 |
|
|---|
| 430 | for( $pnts=0; $pnts<$numpoints; ++$pnts) {
|
|---|
| 431 |
|
|---|
| 432 | if( $exist_x ) {
|
|---|
| 433 | $x=$this->coords[1][$pnts];
|
|---|
| 434 | }
|
|---|
| 435 | else {
|
|---|
| 436 | $x=$pnts+$textadj;
|
|---|
| 437 | }
|
|---|
| 438 | $xt = $xscale->Translate($x);
|
|---|
| 439 | $yt = $yscale->Translate($this->coords[0][$pnts]);
|
|---|
| 440 |
|
|---|
| 441 | if( is_numeric($this->coords[0][$pnts]) ) {
|
|---|
| 442 | if( !empty($this->csimtargets[$pnts]) ) {
|
|---|
| 443 | if( !empty($this->csimwintargets[$pnts]) ) {
|
|---|
| 444 | $this->mark->SetCSIMTarget($this->csimtargets[$pnts],$this->csimwintargets[$pnts]);
|
|---|
| 445 | }
|
|---|
| 446 | else {
|
|---|
| 447 | $this->mark->SetCSIMTarget($this->csimtargets[$pnts]);
|
|---|
| 448 | }
|
|---|
| 449 | $this->mark->SetCSIMAlt($this->csimalts[$pnts]);
|
|---|
| 450 | }
|
|---|
| 451 | if( $exist_x ) {
|
|---|
| 452 | $x=$this->coords[1][$pnts];
|
|---|
| 453 | }
|
|---|
| 454 | else {
|
|---|
| 455 | $x=$pnts;
|
|---|
| 456 | }
|
|---|
| 457 | $this->mark->SetCSIMAltVal($this->coords[0][$pnts],$x);
|
|---|
| 458 | $this->mark->Stroke($img,$xt,$yt);
|
|---|
| 459 | $this->csimareas .= $this->mark->GetCSIMAreas();
|
|---|
| 460 | }
|
|---|
| 461 | }
|
|---|
| [2] | 462 | }
|
|---|
| 463 | } // Class
|
|---|
| 464 |
|
|---|
| 465 |
|
|---|
| 466 | //===================================================
|
|---|
| 467 | // CLASS AccLinePlot
|
|---|
| [284] | 468 | // Description:
|
|---|
| [2] | 469 | //===================================================
|
|---|
| 470 | class AccLinePlot extends Plot {
|
|---|
| 471 | protected $plots=null,$nbrplots=0;
|
|---|
| 472 | private $iStartEndZero=true;
|
|---|
| [284] | 473 | //---------------
|
|---|
| 474 | // CONSTRUCTOR
|
|---|
| 475 | function __construct($plots) {
|
|---|
| [2] | 476 | $this->plots = $plots;
|
|---|
| [284] | 477 | $this->nbrplots = count($plots);
|
|---|
| 478 | $this->numpoints = $plots[0]->numpoints;
|
|---|
| [2] | 479 |
|
|---|
| [284] | 480 | // Verify that all plots have the same number of data points
|
|---|
| 481 | for( $i=1; $i < $this->nbrplots; ++$i ) {
|
|---|
| 482 | if( $plots[$i]->numpoints != $this->numpoints ) {
|
|---|
| 483 | JpGraphError::RaiseL(10003);//('Each plot in an accumulated lineplot must have the same number of data points',0)
|
|---|
| 484 | }
|
|---|
| 485 | }
|
|---|
| [2] | 486 |
|
|---|
| [284] | 487 | for($i=0; $i < $this->nbrplots; ++$i ) {
|
|---|
| 488 | $this->LineInterpolate($this->plots[$i]->coords[0]);
|
|---|
| 489 | }
|
|---|
| [2] | 490 | }
|
|---|
| 491 |
|
|---|
| [284] | 492 | //---------------
|
|---|
| 493 | // PUBLIC METHODS
|
|---|
| [2] | 494 | function Legend($graph) {
|
|---|
| [284] | 495 | foreach( $this->plots as $p ) {
|
|---|
| 496 | $p->DoLegend($graph);
|
|---|
| 497 | }
|
|---|
| [2] | 498 | }
|
|---|
| [284] | 499 |
|
|---|
| [2] | 500 | function Max() {
|
|---|
| [284] | 501 | list($xmax) = $this->plots[0]->Max();
|
|---|
| 502 | $nmax=0;
|
|---|
| 503 | $n = count($this->plots);
|
|---|
| 504 | for($i=0; $i < $n; ++$i) {
|
|---|
| 505 | $nc = count($this->plots[$i]->coords[0]);
|
|---|
| 506 | $nmax = max($nmax,$nc);
|
|---|
| 507 | list($x) = $this->plots[$i]->Max();
|
|---|
| 508 | $xmax = Max($xmax,$x);
|
|---|
| 509 | }
|
|---|
| 510 | for( $i = 0; $i < $nmax; $i++ ) {
|
|---|
| 511 | // Get y-value for line $i by adding the
|
|---|
| 512 | // individual bars from all the plots added.
|
|---|
| 513 | // It would be wrong to just add the
|
|---|
| 514 | // individual plots max y-value since that
|
|---|
| 515 | // would in most cases give to large y-value.
|
|---|
| 516 | $y=$this->plots[0]->coords[0][$i];
|
|---|
| 517 | for( $j = 1; $j < $this->nbrplots; $j++ ) {
|
|---|
| 518 | $y += $this->plots[ $j ]->coords[0][$i];
|
|---|
| 519 | }
|
|---|
| 520 | $ymax[$i] = $y;
|
|---|
| 521 | }
|
|---|
| 522 | $ymax = max($ymax);
|
|---|
| 523 | return array($xmax,$ymax);
|
|---|
| 524 | }
|
|---|
| [2] | 525 |
|
|---|
| 526 | function Min() {
|
|---|
| [284] | 527 | $nmax=0;
|
|---|
| 528 | list($xmin,$ysetmin) = $this->plots[0]->Min();
|
|---|
| 529 | $n = count($this->plots);
|
|---|
| 530 | for($i=0; $i < $n; ++$i) {
|
|---|
| 531 | $nc = count($this->plots[$i]->coords[0]);
|
|---|
| 532 | $nmax = max($nmax,$nc);
|
|---|
| 533 | list($x,$y) = $this->plots[$i]->Min();
|
|---|
| 534 | $xmin = Min($xmin,$x);
|
|---|
| 535 | $ysetmin = Min($y,$ysetmin);
|
|---|
| 536 | }
|
|---|
| 537 | for( $i = 0; $i < $nmax; $i++ ) {
|
|---|
| 538 | // Get y-value for line $i by adding the
|
|---|
| 539 | // individual bars from all the plots added.
|
|---|
| 540 | // It would be wrong to just add the
|
|---|
| 541 | // individual plots min y-value since that
|
|---|
| 542 | // would in most cases give to small y-value.
|
|---|
| 543 | $y=$this->plots[0]->coords[0][$i];
|
|---|
| 544 | for( $j = 1; $j < $this->nbrplots; $j++ ) {
|
|---|
| 545 | $y += $this->plots[ $j ]->coords[0][$i];
|
|---|
| 546 | }
|
|---|
| 547 | $ymin[$i] = $y;
|
|---|
| 548 | }
|
|---|
| 549 | $ymin = Min($ysetmin,Min($ymin));
|
|---|
| 550 | return array($xmin,$ymin);
|
|---|
| [2] | 551 | }
|
|---|
| 552 |
|
|---|
| 553 | // Gets called before any axis are stroked
|
|---|
| 554 | function PreStrokeAdjust($graph) {
|
|---|
| 555 |
|
|---|
| [284] | 556 | // If another plot type have already adjusted the
|
|---|
| 557 | // offset we don't touch it.
|
|---|
| 558 | // (We check for empty in case the scale is a log scale
|
|---|
| 559 | // and hence doesn't contain any xlabel_offset)
|
|---|
| 560 |
|
|---|
| 561 | if( empty($graph->xaxis->scale->ticks->xlabel_offset) ||
|
|---|
| 562 | $graph->xaxis->scale->ticks->xlabel_offset == 0 ) {
|
|---|
| 563 | if( $this->center ) {
|
|---|
| 564 | ++$this->numpoints;
|
|---|
| 565 | $a=0.5; $b=0.5;
|
|---|
| 566 | } else {
|
|---|
| 567 | $a=0; $b=0;
|
|---|
| 568 | }
|
|---|
| 569 | $graph->xaxis->scale->ticks->SetXLabelOffset($a);
|
|---|
| 570 | $graph->SetTextScaleOff($b);
|
|---|
| 571 | $graph->xaxis->scale->ticks->SupressMinorTickMarks();
|
|---|
| 572 | }
|
|---|
| 573 |
|
|---|
| [2] | 574 | }
|
|---|
| 575 |
|
|---|
| 576 | function SetInterpolateMode($aIntMode) {
|
|---|
| [284] | 577 | $this->iStartEndZero=$aIntMode;
|
|---|
| [2] | 578 | }
|
|---|
| 579 |
|
|---|
| 580 | // Replace all '-' with an interpolated value. We use straightforward
|
|---|
| 581 | // linear interpolation. If the data starts with one or several '-' they
|
|---|
| 582 | // will be replaced by the the first valid data point
|
|---|
| 583 | function LineInterpolate(&$aData) {
|
|---|
| 584 |
|
|---|
| [284] | 585 | $n=count($aData);
|
|---|
| 586 | $i=0;
|
|---|
| [2] | 587 |
|
|---|
| [284] | 588 | // If first point is undefined we will set it to the same as the first
|
|---|
| 589 | // valid data
|
|---|
| 590 | if( $aData[$i]==='-' ) {
|
|---|
| 591 | // Find the first valid data
|
|---|
| 592 | while( $i < $n && $aData[$i]==='-' ) {
|
|---|
| 593 | ++$i;
|
|---|
| 594 | }
|
|---|
| 595 | if( $i < $n ) {
|
|---|
| 596 | for($j=0; $j < $i; ++$j ) {
|
|---|
| 597 | if( $this->iStartEndZero )
|
|---|
| 598 | $aData[$i] = 0;
|
|---|
| 599 | else
|
|---|
| 600 | $aData[$j] = $aData[$i];
|
|---|
| 601 | }
|
|---|
| 602 | }
|
|---|
| 603 | else {
|
|---|
| 604 | // All '-' => Error
|
|---|
| 605 | return false;
|
|---|
| 606 | }
|
|---|
| 607 | }
|
|---|
| [2] | 608 |
|
|---|
| [284] | 609 | while($i < $n) {
|
|---|
| 610 | while( $i < $n && $aData[$i] !== '-' ) {
|
|---|
| 611 | ++$i;
|
|---|
| 612 | }
|
|---|
| 613 | if( $i < $n ) {
|
|---|
| 614 | $pstart=$i-1;
|
|---|
| 615 |
|
|---|
| 616 | // Now see how long this segment of '-' are
|
|---|
| 617 | while( $i < $n && $aData[$i] === '-' ) {
|
|---|
| 618 | ++$i;
|
|---|
| 619 | }
|
|---|
| 620 | if( $i < $n ) {
|
|---|
| 621 | $pend=$i;
|
|---|
| 622 | $size=$pend-$pstart;
|
|---|
| 623 | $k=($aData[$pend]-$aData[$pstart])/$size;
|
|---|
| 624 | // Replace the segment of '-' with a linear interpolated value.
|
|---|
| 625 | for($j=1; $j < $size; ++$j ) {
|
|---|
| 626 | $aData[$pstart+$j] = $aData[$pstart] + $j*$k ;
|
|---|
| 627 | }
|
|---|
| 628 | }
|
|---|
| 629 | else {
|
|---|
| 630 | // There are no valid end point. The '-' goes all the way to the end
|
|---|
| 631 | // In that case we just set all the remaining values the the same as the
|
|---|
| 632 | // last valid data point.
|
|---|
| 633 | for( $j=$pstart+1; $j < $n; ++$j )
|
|---|
| 634 | if( $this->iStartEndZero ) {
|
|---|
| 635 | $aData[$j] = 0;
|
|---|
| 636 | }
|
|---|
| 637 | else {
|
|---|
| 638 | $aData[$j] = $aData[$pstart] ;
|
|---|
| 639 | }
|
|---|
| 640 | }
|
|---|
| 641 | }
|
|---|
| 642 | }
|
|---|
| 643 | return true;
|
|---|
| [2] | 644 | }
|
|---|
| 645 |
|
|---|
| 646 | // To avoid duplicate of line drawing code here we just
|
|---|
| 647 | // change the y-values for each plot and then restore it
|
|---|
| 648 | // after we have made the stroke. We must do this copy since
|
|---|
| 649 | // it wouldn't be possible to create an acc line plot
|
|---|
| 650 | // with the same graphs, i.e AccLinePlot(array($pl,$pl,$pl));
|
|---|
| 651 | // since this method would have a side effect.
|
|---|
| 652 | function Stroke($img,$xscale,$yscale) {
|
|---|
| [284] | 653 | $img->SetLineWeight($this->weight);
|
|---|
| 654 | $this->numpoints = count($this->plots[0]->coords[0]);
|
|---|
| 655 | // Allocate array
|
|---|
| 656 | $coords[$this->nbrplots][$this->numpoints]=0;
|
|---|
| 657 | for($i=0; $i<$this->numpoints; $i++) {
|
|---|
| 658 | $coords[0][$i]=$this->plots[0]->coords[0][$i];
|
|---|
| 659 | $accy=$coords[0][$i];
|
|---|
| 660 | for($j=1; $j<$this->nbrplots; ++$j ) {
|
|---|
| 661 | $coords[$j][$i] = $this->plots[$j]->coords[0][$i]+$accy;
|
|---|
| 662 | $accy = $coords[$j][$i];
|
|---|
| 663 | }
|
|---|
| 664 | }
|
|---|
| 665 | for($j=$this->nbrplots-1; $j>=0; --$j) {
|
|---|
| 666 | $p=$this->plots[$j];
|
|---|
| 667 | for( $i=0; $i<$this->numpoints; ++$i) {
|
|---|
| 668 | $tmp[$i]=$p->coords[0][$i];
|
|---|
| 669 | $p->coords[0][$i]=$coords[$j][$i];
|
|---|
| 670 | }
|
|---|
| 671 | $p->Stroke($img,$xscale,$yscale);
|
|---|
| 672 | for( $i=0; $i<$this->numpoints; ++$i) {
|
|---|
| 673 | $p->coords[0][$i]=$tmp[$i];
|
|---|
| 674 | }
|
|---|
| 675 | $p->coords[0][]=$tmp;
|
|---|
| 676 | }
|
|---|
| [2] | 677 | }
|
|---|
| 678 | } // Class
|
|---|
| 679 |
|
|---|
| 680 |
|
|---|
| 681 | /* EOF */
|
|---|
| 682 | ?>
|
|---|
