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225 lines
No EOL
6.6 KiB
PHP
225 lines
No EOL
6.6 KiB
PHP
<?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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// Author: Johan Persson (johanp@aditus.nu)
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// Ver: $Id: jpgraph_scatter.php,v 1.1 2006/07/07 13:37:14 powles Exp $
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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');
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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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var $iSize=10; // Length in pixels for arrow
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var $iArrowSize = 2;
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var $iColor='black';
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var $isizespec = array(
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array(2,1),array(3,2),array(4,3),array(6,4),array(7,4),array(8,5),array(10,6),array(12,7),array(16,8),array(20,10));
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function FieldArrow() {
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}
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function SetSize($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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var $iAngles;
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var $iCallback='';
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function FieldPlot($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 = $angles;
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$this->Plot($datay,$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 = $bas;
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//echo "f=$f, cc=$cc, cs=$cs, cas=$cas<br>";
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$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);
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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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var $impuls = false;
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var $linkpoints = false, $linkpointweight=1, $linkpointcolor="black";
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//---------------
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// CONSTRUCTOR
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function ScatterPlot($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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$this->Plot($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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$this->value->SetMargin(0);
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}
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//---------------
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// PUBLIC METHODS
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function SetImpuls($f=true) {
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$this->impuls = $f;
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}
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// Combine the scatter plot points with a line
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function SetLinkPoints($aFlag=true,$aColor="black",$aWeight=1) {
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$this->linkpoints=$aFlag;
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$this->linkpointcolor=$aColor;
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$this->linkpointweight=$aWeight;
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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( $this->linkpoints && isset($yt_old) ) {
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$img->SetColor($this->linkpointcolor);
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$img->SetLineWeight($this->linkpointweight);
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$img->Line($xt_old,$yt_old,$xt,$yt);
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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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$this->mark->SetCSIMTarget($this->csimtargets[$i]);
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$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);
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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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