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