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<?php
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/*=======================================================================
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// File: JPGRAPH_LINE.PHP
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// Description: Line plot extension for JpGraph
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// Created: 2001-01-08
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// Ver: $Id: jpgraph_line.php 1921 2009-12-11 11:46:39Z ljp $
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//
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// Copyright (c) Aditus Consulting. All rights reserved.
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//========================================================================
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*/
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require_once ('jpgraph_plotmark.inc.php');
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// constants for the (filled) area
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DEFINE("LP_AREA_FILLED", true);
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DEFINE("LP_AREA_NOT_FILLED", false);
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DEFINE("LP_AREA_BORDER",false);
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DEFINE("LP_AREA_NO_BORDER",true);
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//===================================================
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// CLASS LinePlot
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// Description:
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//===================================================
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class LinePlot extends Plot{
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public $mark=null;
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protected $filled=false;
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protected $fill_color='blue';
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protected $step_style=false, $center=false;
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protected $line_style=1; // Default to solid
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protected $filledAreas = array(); // array of arrays(with min,max,col,filled in them)
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public $barcenter=false; // When we mix line and bar. Should we center the line in the bar.
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protected $fillFromMin = false, $fillFromMax = false;
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protected $fillgrad=false,$fillgrad_fromcolor='navy',$fillgrad_tocolor='silver',$fillgrad_numcolors=100;
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protected $iFastStroke=false;
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//---------------
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// CONSTRUCTOR
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function LinePlot($datay,$datax=false) {
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parent::__construct($datay,$datax);
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$this->mark = new PlotMark() ;
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$this->color = ColorFactory::getColor();
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$this->fill_color = $this->color;
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}
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//---------------
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// PUBLIC METHODS
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function SetFilled($aFlg=true) {
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$this->filled = $aFlg;
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}
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function SetBarCenter($aFlag=true) {
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$this->barcenter=$aFlag;
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}
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function SetStyle($aStyle) {
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$this->line_style=$aStyle;
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}
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function SetStepStyle($aFlag=true) {
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$this->step_style = $aFlag;
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}
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function SetColor($aColor) {
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parent::SetColor($aColor);
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}
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function SetFillFromYMin($f=true) {
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$this->fillFromMin = $f ;
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}
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function SetFillFromYMax($f=true) {
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$this->fillFromMax = $f ;
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}
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function SetFillColor($aColor,$aFilled=true) {
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//$this->color = $aColor;
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$this->fill_color=$aColor;
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$this->filled=$aFilled;
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}
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function SetFillGradient($aFromColor,$aToColor,$aNumColors=100,$aFilled=true) {
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$this->fillgrad_fromcolor = $aFromColor;
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$this->fillgrad_tocolor = $aToColor;
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$this->fillgrad_numcolors = $aNumColors;
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$this->filled = $aFilled;
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$this->fillgrad = true;
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}
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function Legend($graph) {
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if( $this->legend!="" ) {
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if( $this->filled && !$this->fillgrad ) {
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$graph->legend->Add($this->legend,
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$this->fill_color,$this->mark,0,
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$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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}
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elseif( $this->fillgrad ) {
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$color=array($this->fillgrad_fromcolor,$this->fillgrad_tocolor);
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// In order to differentiate between gradients and cooors specified as an RGB triple
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$graph->legend->Add($this->legend,$color,"",-2 /* -GRAD_HOR */,
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$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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} else {
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$graph->legend->Add($this->legend,
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$this->color,$this->mark,$this->line_style,
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$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget);
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}
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}
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}
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function AddArea($aMin=0,$aMax=0,$aFilled=LP_AREA_NOT_FILLED,$aColor="gray9",$aBorder=LP_AREA_BORDER) {
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if($aMin > $aMax) {
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// swap
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$tmp = $aMin;
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$aMin = $aMax;
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$aMax = $tmp;
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}
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$this->filledAreas[] = array($aMin,$aMax,$aColor,$aFilled,$aBorder);
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}
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// Gets called before any axis are stroked
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function PreStrokeAdjust($graph) {
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// If another plot type have already adjusted the
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// offset we don't touch it.
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// (We check for empty in case the scale is a log scale
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// and hence doesn't contain any xlabel_offset)
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if( empty($graph->xaxis->scale->ticks->xlabel_offset) || $graph->xaxis->scale->ticks->xlabel_offset == 0 ) {
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if( $this->center ) {
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++$this->numpoints;
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$a=0.5; $b=0.5;
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} else {
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$a=0; $b=0;
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}
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$graph->xaxis->scale->ticks->SetXLabelOffset($a);
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$graph->SetTextScaleOff($b);
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//$graph->xaxis->scale->ticks->SupressMinorTickMarks();
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}
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}
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function SetFastStroke($aFlg=true) {
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$this->iFastStroke = $aFlg;
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}
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function FastStroke($img,$xscale,$yscale,$aStartPoint=0,$exist_x=true) {
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// An optimized stroke for many data points with no extra
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// features but 60% faster. You can't have values or line styles, or null
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// values in plots.
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$numpoints=count($this->coords[0]);
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if( $this->barcenter ) {
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$textadj = 0.5-$xscale->text_scale_off;
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}
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else {
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$textadj = 0;
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}
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$img->SetColor($this->color);
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$img->SetLineWeight($this->weight);
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$pnts=$aStartPoint;
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while( $pnts < $numpoints ) {
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if( $exist_x ) {
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$x=$this->coords[1][$pnts];
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}
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else {
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$x=$pnts+$textadj;
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}
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$xt = $xscale->Translate($x);
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$y=$this->coords[0][$pnts];
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$yt = $yscale->Translate($y);
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if( is_numeric($y) ) {
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$cord[] = $xt;
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$cord[] = $yt;
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}
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elseif( $y == '-' && $pnts > 0 ) {
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// Just ignore
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}
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else {
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JpGraphError::RaiseL(10002);//('Plot too complicated for fast line Stroke. Use standard Stroke()');
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}
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++$pnts;
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} // WHILE
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$img->Polygon($cord,false,true);
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}
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function Stroke($img,$xscale,$yscale) {
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$idx=0;
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$numpoints=count($this->coords[0]);
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if( isset($this->coords[1]) ) {
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if( count($this->coords[1])!=$numpoints ) {
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JpGraphError::RaiseL(2003,count($this->coords[1]),$numpoints);
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//("Number of X and Y points are not equal. Number of X-points:".count($this->coords[1])." Number of Y-points:$numpoints");
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}
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else {
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$exist_x = true;
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}
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}
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else {
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$exist_x = false;
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}
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if( $this->barcenter ) {
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$textadj = 0.5-$xscale->text_scale_off;
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}
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else {
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$textadj = 0;
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}
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// Find the first numeric data point
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$startpoint=0;
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while( $startpoint < $numpoints && !is_numeric($this->coords[0][$startpoint]) ) {
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++$startpoint;
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}
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// Bail out if no data points
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if( $startpoint == $numpoints ) return;
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if( $this->iFastStroke ) {
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$this->FastStroke($img,$xscale,$yscale,$startpoint,$exist_x);
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return;
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}
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if( $exist_x ) {
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$xs=$this->coords[1][$startpoint];
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}
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else {
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$xs= $textadj+$startpoint;
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}
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$img->SetStartPoint($xscale->Translate($xs),
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$yscale->Translate($this->coords[0][$startpoint]));
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if( $this->filled ) {
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if( $this->fillFromMax ) {
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//$max = $yscale->GetMaxVal();
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$cord[$idx++] = $xscale->Translate($xs);
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$cord[$idx++] = $yscale->scale_abs[1];
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}
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else {
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$min = $yscale->GetMinVal();
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if( $min > 0 || $this->fillFromMin ) {
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$fillmin = $yscale->scale_abs[0];//Translate($min);
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}
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else {
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$fillmin = $yscale->Translate(0);
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}
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$cord[$idx++] = $xscale->Translate($xs);
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$cord[$idx++] = $fillmin;
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}
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}
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$xt = $xscale->Translate($xs);
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$yt = $yscale->Translate($this->coords[0][$startpoint]);
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$cord[$idx++] = $xt;
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$cord[$idx++] = $yt;
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$yt_old = $yt;
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$xt_old = $xt;
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$y_old = $this->coords[0][$startpoint];
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$this->value->Stroke($img,$this->coords[0][$startpoint],$xt,$yt);
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$img->SetColor($this->color);
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$img->SetLineWeight($this->weight);
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$img->SetLineStyle($this->line_style);
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$pnts=$startpoint+1;
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$firstnonumeric = false;
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while( $pnts < $numpoints ) {
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if( $exist_x ) {
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$x=$this->coords[1][$pnts];
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}
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else {
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$x=$pnts+$textadj;
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}
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$xt = $xscale->Translate($x);
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$yt = $yscale->Translate($this->coords[0][$pnts]);
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$y=$this->coords[0][$pnts];
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if( $this->step_style ) {
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// To handle null values within step style we need to record the
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// first non numeric value so we know from where to start if the
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// non value is '-'.
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if( is_numeric($y) ) {
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$firstnonumeric = false;
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if( is_numeric($y_old) ) {
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$img->StyleLine($xt_old,$yt_old,$xt,$yt_old);
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$img->StyleLine($xt,$yt_old,$xt,$yt);
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}
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elseif( $y_old == '-' ) {
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$img->StyleLine($xt_first,$yt_first,$xt,$yt_first);
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$img->StyleLine($xt,$yt_first,$xt,$yt);
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}
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else {
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$yt_old = $yt;
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$xt_old = $xt;
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}
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$cord[$idx++] = $xt;
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$cord[$idx++] = $yt_old;
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$cord[$idx++] = $xt;
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300 |
$cord[$idx++] = $yt;
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}
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elseif( $firstnonumeric==false ) {
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$firstnonumeric = true;
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$yt_first = $yt_old;
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$xt_first = $xt_old;
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}
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}
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else {
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309 |
$tmp1=$y;
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310 |
$prev=$this->coords[0][$pnts-1];
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if( $tmp1==='' || $tmp1===NULL || $tmp1==='X' ) $tmp1 = 'x';
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if( $prev==='' || $prev===null || $prev==='X' ) $prev = 'x';
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313 |
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314 |
if( is_numeric($y) || (is_string($y) && $y != '-') ) {
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315 |
if( is_numeric($y) && (is_numeric($prev) || $prev === '-' ) ) {
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$img->StyleLineTo($xt,$yt);
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}
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else {
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319 |
$img->SetStartPoint($xt,$yt);
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}
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}
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322 |
if( $this->filled && $tmp1 !== '-' ) {
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323 |
if( $tmp1 === 'x' ) {
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$cord[$idx++] = $cord[$idx-3];
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$cord[$idx++] = $fillmin;
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}
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elseif( $prev === 'x' ) {
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$cord[$idx++] = $xt;
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$cord[$idx++] = $fillmin;
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330 |
$cord[$idx++] = $xt;
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$cord[$idx++] = $yt;
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}
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else {
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$cord[$idx++] = $xt;
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$cord[$idx++] = $yt;
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}
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}
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else {
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339 |
if( is_numeric($tmp1) && (is_numeric($prev) || $prev === '-' ) ) {
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$cord[$idx++] = $xt;
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$cord[$idx++] = $yt;
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}
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}
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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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348 |
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349 |
$this->StrokeDataValue($img,$this->coords[0][$pnts],$xt,$yt);
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351 |
++$pnts;
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352 |
}
|
|
|
353 |
|
|
|
354 |
if( $this->filled ) {
|
|
|
355 |
$cord[$idx++] = $xt;
|
|
|
356 |
if( $this->fillFromMax ) {
|
|
|
357 |
$cord[$idx++] = $yscale->scale_abs[1];
|
|
|
358 |
}
|
|
|
359 |
else {
|
|
|
360 |
if( $min > 0 || $this->fillFromMin ) {
|
|
|
361 |
$cord[$idx++] = $yscale->Translate($min);
|
|
|
362 |
}
|
|
|
363 |
else {
|
|
|
364 |
$cord[$idx++] = $yscale->Translate(0);
|
|
|
365 |
}
|
|
|
366 |
}
|
|
|
367 |
if( $this->fillgrad ) {
|
|
|
368 |
$img->SetLineWeight(1);
|
|
|
369 |
$grad = new Gradient($img);
|
|
|
370 |
$grad->SetNumColors($this->fillgrad_numcolors);
|
|
|
371 |
$grad->FilledFlatPolygon($cord,$this->fillgrad_fromcolor,$this->fillgrad_tocolor);
|
|
|
372 |
$img->SetLineWeight($this->weight);
|
|
|
373 |
}
|
|
|
374 |
else {
|
|
|
375 |
$img->SetColor($this->fill_color);
|
|
|
376 |
$img->FilledPolygon($cord);
|
|
|
377 |
}
|
|
|
378 |
if( $this->weight > 0 ) {
|
|
|
379 |
$img->SetLineWeight($this->weight);
|
|
|
380 |
$img->SetColor($this->color);
|
|
|
381 |
// Remove first and last coordinate before drawing the line
|
|
|
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($cord)-4));
|
|
|
385 |
}
|
|
|
386 |
}
|
|
|
387 |
|
|
|
388 |
if(!empty($this->filledAreas)) {
|
|
|
389 |
|
|
|
390 |
$minY = $yscale->Translate($yscale->GetMinVal());
|
|
|
391 |
$factor = ($this->step_style ? 4 : 2);
|
|
|
392 |
|
|
|
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;
|
|
|
398 |
|
|
|
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[] = $minY; // last y
|
|
|
406 |
|
|
|
407 |
if($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 |
}
|
|
|
422 |
|
|
|
423 |
$areaCoords = array();
|
|
|
424 |
}
|
|
|
425 |
}
|
|
|
426 |
|
|
|
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 |
}
|
|
|
462 |
}
|
|
|
463 |
} // Class
|
|
|
464 |
|
|
|
465 |
|
|
|
466 |
//===================================================
|
|
|
467 |
// CLASS AccLinePlot
|
|
|
468 |
// Description:
|
|
|
469 |
//===================================================
|
|
|
470 |
class AccLinePlot extends Plot {
|
|
|
471 |
protected $plots=null,$nbrplots=0;
|
|
|
472 |
private $iStartEndZero=true;
|
|
|
473 |
//---------------
|
|
|
474 |
// CONSTRUCTOR
|
|
|
475 |
function __construct($plots) {
|
|
|
476 |
$this->plots = $plots;
|
|
|
477 |
$this->nbrplots = count($plots);
|
|
|
478 |
$this->numpoints = $plots[0]->numpoints;
|
|
|
479 |
|
|
|
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 != $this->numpoints ) {
|
|
|
483 |
JpGraphError::RaiseL(10003);//('Each plot in an accumulated lineplot must have the same number of data points',0)
|
|
|
484 |
}
|
|
|
485 |
}
|
|
|
486 |
|
|
|
487 |
for($i=0; $i < $this->nbrplots; ++$i ) {
|
|
|
488 |
$this->LineInterpolate($this->plots[$i]->coords[0]);
|
|
|
489 |
}
|
|
|
490 |
}
|
|
|
491 |
|
|
|
492 |
//---------------
|
|
|
493 |
// PUBLIC METHODS
|
|
|
494 |
function Legend($graph) {
|
|
|
495 |
foreach( $this->plots as $p ) {
|
|
|
496 |
$p->DoLegend($graph);
|
|
|
497 |
}
|
|
|
498 |
}
|
|
|
499 |
|
|
|
500 |
function Max() {
|
|
|
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 |
}
|
|
|
525 |
|
|
|
526 |
function Min() {
|
|
|
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,$ymin);
|
|
|
551 |
}
|
|
|
552 |
|
|
|
553 |
// Gets called before any axis are stroked
|
|
|
554 |
function PreStrokeAdjust($graph) {
|
|
|
555 |
|
|
|
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 |
$graph->xaxis->scale->ticks->SupressMinorTickMarks();
|
|
|
572 |
}
|
|
|
573 |
|
|
|
574 |
}
|
|
|
575 |
|
|
|
576 |
function SetInterpolateMode($aIntMode) {
|
|
|
577 |
$this->iStartEndZero=$aIntMode;
|
|
|
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 |
|
|
|
585 |
$n=count($aData);
|
|
|
586 |
$i=0;
|
|
|
587 |
|
|
|
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 |
}
|
|
|
608 |
|
|
|
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;
|
|
|
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) {
|
|
|
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 |
}
|
|
|
677 |
}
|
|
|
678 |
} // Class
|
|
|
679 |
|
|
|
680 |
|
|
|
681 |
/* EOF */
|
|
|
682 |
?>
|