[2] | 1 | <?php
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| 2 | /*=======================================================================
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| 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 | // Author: Johan Persson (johanp@aditus.nu)
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| 7 | // Ver: $Id: jpgraph_line.php,v 1.48 2003/05/28 18:39:45 aditus Exp $
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| 8 | //
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| 9 | // License: This code is released under QPL
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| 10 | // Copyright (C) 2001,2002 Johan Persson
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| 11 | //========================================================================
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| 12 | */
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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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| 22 | // Description:
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| 23 | //===================================================
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| 24 | class LinePlot extends Plot{
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| 25 | var $filled=false;
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| 26 | var $fill_color='blue';
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| 27 | var $mark=null;
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| 28 | var $step_style=false, $center=false;
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| 29 | var $line_style=1; // Default to solid
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| 30 | var $filledAreas = array(); // array of arrays(with min,max,col,filled in them)
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| 31 | var $barcenter=false; // When we mix line and bar. Should we center the line in the bar.
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| 32 | var $fillFromMin = false ;
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| 33 |
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| 34 | //---------------
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| 35 | // CONSTRUCTOR
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| 36 | function LinePlot(&$datay,$datax=false) {
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| 37 | $this->Plot($datay,$datax);
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| 38 | $this->mark = new PlotMark();
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| 39 | }
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| 40 | //---------------
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| 41 | // PUBLIC METHODS
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| 42 |
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| 43 | // Set style, filled or open
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| 44 | function SetFilled($aFlag=true) {
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| 45 | JpGraphError::Raise('LinePlot::SetFilled() is deprecated. Use SetFillColor()');
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| 46 | }
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| 47 |
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| 48 | function SetBarCenter($aFlag=true) {
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| 49 | $this->barcenter=$aFlag;
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| 50 | }
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| 51 |
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| 52 | function SetStyle($aStyle) {
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| 53 | $this->line_style=$aStyle;
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| 54 | }
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| 55 |
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| 56 | function SetStepStyle($aFlag=true) {
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| 57 | $this->step_style = $aFlag;
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| 58 | }
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| 59 |
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| 60 | function SetColor($aColor) {
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| 61 | parent::SetColor($aColor);
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| 62 | }
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| 63 |
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| 64 | function SetFillFromYMin($f = true ) {
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| 65 | $this->fillFromMin = $f ;
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| 66 | }
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| 67 |
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| 68 | function SetFillColor($aColor,$aFilled=true) {
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| 69 | $this->fill_color=$aColor;
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| 70 | $this->filled=$aFilled;
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| 71 | }
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| 72 |
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| 73 | function Legend(&$graph) {
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| 74 | if( $this->legend!="" ) {
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| 75 | if( $this->filled ) {
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| 76 | $graph->legend->Add($this->legend,
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| 77 | $this->fill_color,$this->mark,0,
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| 78 | $this->legendcsimtarget,$this->legendcsimalt);
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| 79 | } else {
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| 80 | $graph->legend->Add($this->legend,
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| 81 | $this->color,$this->mark,$this->line_style,
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| 82 | $this->legendcsimtarget,$this->legendcsimalt);
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| 83 | }
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | function AddArea($aMin=0,$aMax=0,$aFilled=LP_AREA_NOT_FILLED,$aColor="gray9",$aBorder=LP_AREA_BORDER) {
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| 88 | if($aMin > $aMax) {
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| 89 | // swap
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| 90 | $tmp = $aMin;
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| 91 | $aMin = $aMax;
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| 92 | $aMax = $tmp;
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| 93 | }
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| 94 | $this->filledAreas[] = array($aMin,$aMax,$aColor,$aFilled,$aBorder);
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| 95 | }
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| 96 |
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| 97 | // Gets called before any axis are stroked
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| 98 | function PreStrokeAdjust(&$graph) {
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| 99 |
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| 100 | // If another plot type have already adjusted the
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| 101 | // offset we don't touch it.
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| 102 | // (We check for empty in case the scale is a log scale
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| 103 | // and hence doesn't contain any xlabel_offset)
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| 104 | if( empty($graph->xaxis->scale->ticks->xlabel_offset) ||
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| 105 | $graph->xaxis->scale->ticks->xlabel_offset == 0 ) {
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| 106 | if( $this->center ) {
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| 107 | ++$this->numpoints;
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| 108 | $a=0.5; $b=0.5;
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| 109 | } else {
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| 110 | $a=0; $b=0;
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| 111 | }
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| 112 | $graph->xaxis->scale->ticks->SetXLabelOffset($a);
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| 113 | $graph->SetTextScaleOff($b);
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| 114 | //$graph->xaxis->scale->ticks->SupressMinorTickMarks();
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| 115 | }
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| 116 | }
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| 117 |
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| 118 | function Stroke(&$img,&$xscale,&$yscale) {
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| 119 | $numpoints=count($this->coords[0]);
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| 120 | if( isset($this->coords[1]) ) {
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| 121 | if( count($this->coords[1])!=$numpoints )
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| 122 | JpGraphError::Raise("Number of X and Y points are not equal. Number of X-points:".count($this->coords[1])." Number of Y-points:$numpoints");
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| 123 | else
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| 124 | $exist_x = true;
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| 125 | }
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| 126 | else
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| 127 | $exist_x = false;
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| 128 |
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| 129 | if( $this->barcenter )
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| 130 | $textadj = 0.5-$xscale->text_scale_off;
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| 131 | else
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| 132 | $textadj = 0;
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| 133 |
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| 134 | // Find the first numeric data point
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| 135 | $startpoint=0;
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| 136 | while( $startpoint < $numpoints && !is_numeric($this->coords[0][$startpoint]) )
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| 137 | ++$startpoint;
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| 138 |
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| 139 | // Bail out if no data points
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| 140 | if( $startpoint == $numpoints )
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| 141 | return;
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| 142 |
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| 143 | if( $exist_x )
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| 144 | $xs=$this->coords[1][$startpoint];
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| 145 | else
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| 146 | $xs= $textadj+$startpoint;
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| 147 |
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| 148 | $img->SetStartPoint($xscale->Translate($xs),
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| 149 | $yscale->Translate($this->coords[0][$startpoint]));
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| 150 |
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| 151 |
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| 152 | if( $this->filled ) {
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| 153 | $cord[] = $xscale->Translate($xs);
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| 154 | $min = $yscale->GetMinVal();
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| 155 | if( $min > 0 || $this->fillFromMin )
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| 156 | $cord[] = $yscale->Translate($min);
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| 157 | else
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| 158 | $cord[] = $yscale->Translate(0);
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| 159 | }
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| 160 | $xt = $xscale->Translate($xs);
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| 161 | $yt = $yscale->Translate($this->coords[0][$startpoint]);
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| 162 | $cord[] = $xt;
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| 163 | $cord[] = $yt;
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| 164 | $yt_old = $yt;
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| 165 |
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| 166 | $this->value->Stroke($img,$this->coords[0][$startpoint],$xt,$yt);
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| 167 |
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| 168 | $img->SetColor($this->color);
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| 169 | $img->SetLineWeight($this->weight);
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| 170 | $img->SetLineStyle($this->line_style);
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| 171 | for( $pnts=$startpoint+1; $pnts<$numpoints; ++$pnts) {
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| 172 |
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| 173 | if( $exist_x ) $x=$this->coords[1][$pnts];
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| 174 | else $x=$pnts+$textadj;
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| 175 | $xt = $xscale->Translate($x);
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| 176 | $yt = $yscale->Translate($this->coords[0][$pnts]);
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| 177 |
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| 178 | $y=$this->coords[0][$pnts];
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| 179 | if( $this->step_style && is_numeric($y) ) {
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| 180 | $img->StyleLineTo($xt,$yt_old);
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| 181 | $img->StyleLineTo($xt,$yt);
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| 182 |
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| 183 | $cord[] = $xt;
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| 184 | $cord[] = $yt_old;
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| 185 |
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| 186 | $cord[] = $xt;
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| 187 | $cord[] = $yt;
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| 188 |
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| 189 | }
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| 190 | else {
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| 191 | if( is_numeric($y) || (is_string($y) && $y != "-") ) {
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| 192 | $tmp1=$this->coords[0][$pnts];
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| 193 | $tmp2=$this->coords[0][$pnts-1];
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| 194 | if( is_numeric($tmp1) && (is_numeric($tmp2) || $tmp2=="-" ) ) {
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| 195 | $img->StyleLineTo($xt,$yt);
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| 196 | }
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| 197 | else {
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| 198 | $img->SetStartPoint($xt,$yt);
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| 199 | }
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| 200 |
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| 201 | if( is_numeric($tmp1) &&
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| 202 | (is_numeric($tmp2) || $tmp2=="-" || ($this->filled && $tmp2=='') ) ) {
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| 203 | $cord[] = $xt;
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| 204 | $cord[] = $yt;
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| 205 | }
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| 206 | }
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| 207 | }
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| 208 | $yt_old = $yt;
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| 209 |
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| 210 | $this->StrokeDataValue($img,$this->coords[0][$pnts],$xt,$yt);
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| 211 |
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| 212 | }
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| 213 |
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| 214 | if( $this->filled ) {
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| 215 | $cord[] = $xt;
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| 216 | if( $min > 0 || $this->fillFromMin )
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| 217 | $cord[] = $yscale->Translate($min);
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| 218 | else
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| 219 | $cord[] = $yscale->Translate(0);
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| 220 | $img->SetColor($this->fill_color);
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| 221 | $img->FilledPolygon($cord);
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| 222 | $img->SetColor($this->color);
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| 223 | $img->Polygon($cord);
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| 224 | }
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| 225 |
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| 226 | if(!empty($this->filledAreas)) {
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| 227 |
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| 228 | $minY = $yscale->Translate($yscale->GetMinVal());
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| 229 | $factor = ($this->step_style ? 4 : 2);
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| 230 |
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| 231 | for($i = 0; $i < sizeof($this->filledAreas); ++$i) {
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| 232 | // go through all filled area elements ordered by insertion
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| 233 | // fill polygon array
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| 234 | $areaCoords[] = $cord[$this->filledAreas[$i][0] * $factor];
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| 235 | $areaCoords[] = $minY;
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| 236 |
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| 237 | $areaCoords =
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| 238 | array_merge($areaCoords,
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| 239 | array_slice($cord,
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| 240 | $this->filledAreas[$i][0] * $factor,
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| 241 | ($this->filledAreas[$i][1] - $this->filledAreas[$i][0] + ($this->step_style ? 0 : 1)) * $factor));
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| 242 | $areaCoords[] = $areaCoords[sizeof($areaCoords)-2]; // last x
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| 243 | $areaCoords[] = $minY; // last y
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| 244 |
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| 245 | if($this->filledAreas[$i][3]) {
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| 246 | $img->SetColor($this->filledAreas[$i][2]);
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| 247 | $img->FilledPolygon($areaCoords);
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| 248 | $img->SetColor($this->color);
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| 249 | }
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| 250 | // Check if we should draw the frame.
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| 251 | // If not we still re-draw the line since it might have been
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| 252 | // partially overwritten by the filled area and it doesn't look
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| 253 | // very good.
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| 254 | // TODO: The behaviour is undefined if the line does not have
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| 255 | // any line at the position of the area.
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| 256 | if( $this->filledAreas[$i][4] )
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| 257 | $img->Polygon($areaCoords);
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| 258 | else
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| 259 | $img->Polygon($cord);
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| 260 |
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| 261 | $areaCoords = array();
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| 262 | }
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| 263 | }
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| 264 |
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| 265 | if( $this->mark->type == -1 || $this->mark->show == false )
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| 266 | return;
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| 267 |
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| 268 | for( $pnts=0; $pnts<$numpoints; ++$pnts) {
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| 269 |
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| 270 | if( $exist_x ) $x=$this->coords[1][$pnts];
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| 271 | else $x=$pnts+$textadj;
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| 272 | $xt = $xscale->Translate($x);
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| 273 | $yt = $yscale->Translate($this->coords[0][$pnts]);
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| 274 |
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| 275 | if( is_numeric($this->coords[0][$pnts]) ) {
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| 276 | if( !empty($this->csimtargets[$pnts]) ) {
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| 277 | $this->mark->SetCSIMTarget($this->csimtargets[$pnts]);
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| 278 | $this->mark->SetCSIMAlt($this->csimalts[$pnts]);
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| 279 | }
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| 280 | if( $exist_x )
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| 281 | $x=$this->coords[1][$pnts];
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| 282 | else
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| 283 | $x=$pnts;
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| 284 | $this->mark->SetCSIMAltVal($this->coords[0][$pnts],$x);
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| 285 | $this->mark->Stroke($img,$xt,$yt);
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| 286 | $this->csimareas .= $this->mark->GetCSIMAreas();
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| 287 | $this->StrokeDataValue($img,$this->coords[0][$pnts],$xt,$yt);
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| 288 | }
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| 289 | }
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| 290 |
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| 291 |
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| 292 | }
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| 293 | } // Class
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| 294 |
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| 295 |
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| 296 | //===================================================
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| 297 | // CLASS AccLinePlot
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| 298 | // Description:
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| 299 | //===================================================
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| 300 | class AccLinePlot extends Plot {
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| 301 | var $plots=null,$nbrplots=0,$numpoints=0;
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| 302 | //---------------
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| 303 | // CONSTRUCTOR
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| 304 | function AccLinePlot($plots) {
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| 305 | $this->plots = $plots;
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| 306 | $this->nbrplots = count($plots);
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| 307 | $this->numpoints = $plots[0]->numpoints;
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| 308 | }
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| 309 |
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| 310 | //---------------
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| 311 | // PUBLIC METHODS
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| 312 | function Legend(&$graph) {
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| 313 | foreach( $this->plots as $p )
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| 314 | $p->DoLegend($graph);
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| 315 | }
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| 316 |
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| 317 | function Max() {
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| 318 | list($xmax) = $this->plots[0]->Max();
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| 319 | $nmax=0;
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| 320 | for($i=0; $i<count($this->plots); ++$i) {
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| 321 | $n = count($this->plots[$i]->coords[0]);
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| 322 | $nmax = max($nmax,$n);
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| 323 | list($x) = $this->plots[$i]->Max();
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| 324 | $xmax = Max($xmax,$x);
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| 325 | }
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| 326 | for( $i = 0; $i < $nmax; $i++ ) {
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| 327 | // Get y-value for line $i by adding the
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| 328 | // individual bars from all the plots added.
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| 329 | // It would be wrong to just add the
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| 330 | // individual plots max y-value since that
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| 331 | // would in most cases give to large y-value.
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| 332 | $y=$this->plots[0]->coords[0][$i];
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| 333 | for( $j = 1; $j < $this->nbrplots; $j++ ) {
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| 334 | $y += $this->plots[ $j ]->coords[0][$i];
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| 335 | }
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| 336 | $ymax[$i] = $y;
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| 337 | }
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| 338 | $ymax = max($ymax);
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| 339 | return array($xmax,$ymax);
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| 340 | }
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| 341 |
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| 342 | function Min() {
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| 343 | $nmax=0;
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| 344 | list($xmin,$ysetmin) = $this->plots[0]->Min();
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| 345 | for($i=0; $i<count($this->plots); ++$i) {
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| 346 | $n = count($this->plots[$i]->coords[0]);
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| 347 | $nmax = max($nmax,$n);
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| 348 | list($x,$y) = $this->plots[$i]->Min();
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| 349 | $xmin = Min($xmin,$x);
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| 350 | $ysetmin = Min($y,$ysetmin);
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| 351 | }
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| 352 | for( $i = 0; $i < $nmax; $i++ ) {
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| 353 | // Get y-value for line $i by adding the
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| 354 | // individual bars from all the plots added.
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| 355 | // It would be wrong to just add the
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| 356 | // individual plots min y-value since that
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| 357 | // would in most cases give to small y-value.
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| 358 | $y=$this->plots[0]->coords[0][$i];
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| 359 | for( $j = 1; $j < $this->nbrplots; $j++ ) {
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| 360 | $y += $this->plots[ $j ]->coords[0][$i];
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| 361 | }
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| 362 | $ymin[$i] = $y;
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| 363 | }
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| 364 | $ymin = Min($ysetmin,Min($ymin));
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| 365 | return array($xmin,$ymin);
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| 366 | }
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| 367 |
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| 368 | // Gets called before any axis are stroked
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| 369 | function PreStrokeAdjust(&$graph) {
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| 370 |
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| 371 | // If another plot type have already adjusted the
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| 372 | // offset we don't touch it.
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| 373 | // (We check for empty in case the scale is a log scale
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| 374 | // and hence doesn't contain any xlabel_offset)
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| 375 |
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| 376 | if( empty($graph->xaxis->scale->ticks->xlabel_offset) ||
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| 377 | $graph->xaxis->scale->ticks->xlabel_offset == 0 ) {
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| 378 | if( $this->center ) {
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| 379 | ++$this->numpoints;
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| 380 | $a=0.5; $b=0.5;
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| 381 | } else {
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| 382 | $a=0; $b=0;
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| 383 | }
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| 384 | $graph->xaxis->scale->ticks->SetXLabelOffset($a);
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| 385 | $graph->SetTextScaleOff($b);
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| 386 | $graph->xaxis->scale->ticks->SupressMinorTickMarks();
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| 387 | }
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| 388 |
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| 389 | }
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| 390 |
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| 391 | // To avoid duplicate of line drawing code here we just
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| 392 | // change the y-values for each plot and then restore it
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| 393 | // after we have made the stroke. We must do this copy since
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| 394 | // it wouldn't be possible to create an acc line plot
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| 395 | // with the same graphs, i.e AccLinePlot(array($pl,$pl,$pl));
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| 396 | // since this method would have a side effect.
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| 397 | function Stroke(&$img,&$xscale,&$yscale) {
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| 398 | $img->SetLineWeight($this->weight);
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| 399 | $this->numpoints = count($this->plots[0]->coords[0]);
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| 400 | // Allocate array
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| 401 | $coords[$this->nbrplots][$this->numpoints]=0;
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| 402 | for($i=0; $i<$this->numpoints; $i++) {
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| 403 | $coords[0][$i]=$this->plots[0]->coords[0][$i];
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| 404 | $accy=$coords[0][$i];
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| 405 | for($j=1; $j<$this->nbrplots; ++$j ) {
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| 406 | $coords[$j][$i] = $this->plots[$j]->coords[0][$i]+$accy;
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| 407 | $accy = $coords[$j][$i];
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| 408 | }
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| 409 | }
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| 410 | for($j=$this->nbrplots-1; $j>=0; --$j) {
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| 411 | $p=$this->plots[$j];
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| 412 | for( $i=0; $i<$this->numpoints; ++$i) {
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| 413 | $tmp[$i]=$p->coords[0][$i];
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| 414 | $p->coords[0][$i]=$coords[$j][$i];
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| 415 | }
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| 416 | $p->Stroke($img,$xscale,$yscale);
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| 417 | for( $i=0; $i<$this->numpoints; ++$i)
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| 418 | $p->coords[0][$i]=$tmp[$i];
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| 419 | $p->coords[0][]=$tmp;
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| 420 | }
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| 421 | }
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| 422 | } // Class
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| 423 |
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| 424 |
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| 425 | /* EOF */
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| 426 | ?>
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