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242 lines
7.8 KiB
242 lines
7.8 KiB
<?php |
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/*======================================================================= |
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// File: JPGRAPH_SCATTER.PHP |
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// Description: Scatter (and impuls) plot extension for JpGraph |
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// Created: 2001-02-11 |
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// Ver: $Id: jpgraph_scatter.php 1397 2009-06-27 21:34:14Z ljp $ |
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// |
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// Copyright (c) Asial Corporation. 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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//=================================================== |
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// CLASS FieldArrow |
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// Description: Draw an arrow at (x,y) with angle a |
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//=================================================== |
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class FieldArrow { |
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public $iColor='black'; |
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public $iSize=10; // Length in pixels for arrow |
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public $iArrowSize = 2; |
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private $isizespec = array( |
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array(2,1),array(3,2),array(4,3),array(6,4),array(7,4),array(8,5),array(10,6),array(12,7),array(16,8),array(20,10) |
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); |
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function __construct() { |
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// Empty |
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} |
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function SetSize($aSize,$aArrowSize=2) { |
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$this->iSize = $aSize; |
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$this->iArrowSize = $aArrowSize; |
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} |
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function SetColor($aColor) { |
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$this->iColor = $aColor; |
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} |
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function Stroke($aImg,$x,$y,$a) { |
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// First rotate the center coordinates |
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list($x,$y) = $aImg->Rotate($x,$y); |
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$old_origin = $aImg->SetCenter($x,$y); |
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$old_a = $aImg->a; |
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$aImg->SetAngle(-$a+$old_a); |
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$dx = round($this->iSize/2); |
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$c = array($x-$dx,$y,$x+$dx,$y); |
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$x += $dx; |
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list($dx,$dy) = $this->isizespec[$this->iArrowSize]; |
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$ca = array($x,$y,$x-$dx,$y-$dy,$x-$dx,$y+$dy,$x,$y); |
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$aImg->SetColor($this->iColor); |
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$aImg->Polygon($c); |
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$aImg->FilledPolygon($ca); |
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$aImg->SetCenter($old_origin[0],$old_origin[1]); |
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$aImg->SetAngle($old_a); |
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} |
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} |
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//=================================================== |
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// CLASS FieldPlot |
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// Description: Render a field plot |
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//=================================================== |
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class FieldPlot extends Plot { |
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public $arrow = ''; |
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private $iAngles = array(); |
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private $iCallback = ''; |
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function __construct($datay,$datax,$angles) { |
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if( (count($datax) != count($datay)) ) |
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JpGraphError::RaiseL(20001);//("Fieldplots must have equal number of X and Y points."); |
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if( (count($datax) != count($angles)) ) |
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JpGraphError::RaiseL(20002);//("Fieldplots must have an angle specified for each X and Y points."); |
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$this->iAngles = $angles; |
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parent::__construct($datay,$datax); |
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$this->value->SetAlign('center','center'); |
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$this->value->SetMargin(15); |
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$this->arrow = new FieldArrow(); |
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} |
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function SetCallback($aFunc) { |
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$this->iCallback = $aFunc; |
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} |
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function Stroke($img,$xscale,$yscale) { |
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// Remeber base color and size |
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$bc = $this->arrow->iColor; |
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$bs = $this->arrow->iSize; |
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$bas = $this->arrow->iArrowSize; |
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for( $i=0; $i<$this->numpoints; ++$i ) { |
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// Skip null values |
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if( $this->coords[0][$i]==="" ) |
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continue; |
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$f = $this->iCallback; |
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if( $f != "" ) { |
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list($cc,$cs,$cas) = call_user_func($f,$this->coords[1][$i],$this->coords[0][$i],$this->iAngles[$i]); |
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// Fall back on global data if the callback isn't set |
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if( $cc == "" ) $cc = $bc; |
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if( $cs == "" ) $cs = $bs; |
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if( $cas == "" ) $cas = $bas; |
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$this->arrow->SetColor($cc); |
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$this->arrow->SetSize($cs,$cas); |
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} |
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$xt = $xscale->Translate($this->coords[1][$i]); |
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$yt = $yscale->Translate($this->coords[0][$i]); |
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$this->arrow->Stroke($img,$xt,$yt,$this->iAngles[$i]); |
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$this->value->Stroke($img,$this->coords[0][$i],$xt,$yt); |
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} |
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} |
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// Framework function |
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function Legend($aGraph) { |
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if( $this->legend != "" ) { |
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$aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0, |
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$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget); |
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} |
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} |
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} |
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//=================================================== |
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// CLASS ScatterPlot |
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// Description: Render X and Y plots |
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//=================================================== |
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class ScatterPlot extends Plot { |
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public $mark,$link; |
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private $impuls = false; |
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//--------------- |
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// CONSTRUCTOR |
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function __construct($datay,$datax=false) { |
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if( (count($datax) != count($datay)) && is_array($datax)) { |
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JpGraphError::RaiseL(20003);//("Scatterplot must have equal number of X and Y points."); |
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} |
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parent::__construct($datay,$datax); |
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$this->mark = new PlotMark(); |
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$this->mark->SetType(MARK_SQUARE); |
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$this->mark->SetColor($this->color); |
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$this->value->SetAlign('center','center'); |
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$this->value->SetMargin(0); |
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$this->link = new LineProperty(1,'black','solid'); |
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$this->link->iShow = false; |
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} |
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//--------------- |
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// PUBLIC METHODS |
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function SetImpuls($f=true) { |
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$this->impuls = $f; |
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} |
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function SetStem($f=true) { |
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$this->impuls = $f; |
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} |
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// Combine the scatter plot points with a line |
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function SetLinkPoints($aFlag=true,$aColor="black",$aWeight=1,$aStyle='solid') { |
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$this->link->iShow = $aFlag; |
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$this->link->iColor = $aColor; |
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$this->link->iWeight = $aWeight; |
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$this->link->iStyle = $aStyle; |
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} |
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function Stroke($img,$xscale,$yscale) { |
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$ymin=$yscale->scale_abs[0]; |
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if( $yscale->scale[0] < 0 ) |
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$yzero=$yscale->Translate(0); |
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else |
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$yzero=$yscale->scale_abs[0]; |
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$this->csimareas = ''; |
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for( $i=0; $i<$this->numpoints; ++$i ) { |
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// Skip null values |
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if( $this->coords[0][$i]==='' || $this->coords[0][$i]==='-' || $this->coords[0][$i]==='x') |
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continue; |
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if( isset($this->coords[1]) ) |
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$xt = $xscale->Translate($this->coords[1][$i]); |
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else |
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$xt = $xscale->Translate($i); |
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$yt = $yscale->Translate($this->coords[0][$i]); |
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if( $this->link->iShow && isset($yt_old) ) { |
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$img->SetColor($this->link->iColor); |
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$img->SetLineWeight($this->link->iWeight); |
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$old = $img->SetLineStyle($this->link->iStyle); |
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$img->StyleLine($xt_old,$yt_old,$xt,$yt); |
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$img->SetLineStyle($old); |
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} |
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if( $this->impuls ) { |
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$img->SetColor($this->color); |
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$img->SetLineWeight($this->weight); |
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$img->Line($xt,$yzero,$xt,$yt); |
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} |
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if( !empty($this->csimtargets[$i]) ) { |
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if( !empty($this->csimwintargets[$i]) ) { |
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$this->mark->SetCSIMTarget($this->csimtargets[$i],$this->csimwintargets[$i]); |
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} |
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else { |
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$this->mark->SetCSIMTarget($this->csimtargets[$i]); |
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} |
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$this->mark->SetCSIMAlt($this->csimalts[$i]); |
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} |
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if( isset($this->coords[1]) ) { |
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$this->mark->SetCSIMAltVal($this->coords[0][$i],$this->coords[1][$i]); |
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} |
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else { |
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$this->mark->SetCSIMAltVal($this->coords[0][$i],$i); |
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} |
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$this->mark->Stroke($img,$xt,$yt); |
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$this->csimareas .= $this->mark->GetCSIMAreas(); |
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$this->value->Stroke($img,$this->coords[0][$i],$xt,$yt); |
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$xt_old = $xt; |
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$yt_old = $yt; |
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} |
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} |
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// Framework function |
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function Legend($aGraph) { |
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if( $this->legend != "" ) { |
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$aGraph->legend->Add($this->legend,$this->mark->fill_color,$this->mark,0, |
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$this->legendcsimtarget,$this->legendcsimalt,$this->legendcsimwintarget); |
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} |
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} |
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} // Class |
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/* EOF */ |
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?>
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