1 files changed, 157 insertions, 0 deletions
diff --git a/html/jpgraph/jpgraph_error.php b/html/jpgraph/jpgraph_error.php
new file mode 100644
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+++ b/html/jpgraph/jpgraph_error.php
@@ -0,0 +1,157 @@
+<?php
+/*=======================================================================
+ // File:        JPGRAPH_ERROR.PHP
+ // Description: Error plot extension for JpGraph
+ // Created:     2001-01-08
+ // Ver:         $Id: jpgraph_error.php 1106 2009-02-22 20:16:35Z ljp $
+ //
+ // Copyright (c) Asial Corporation. All rights reserved.
+ //========================================================================
+ */
+   
+//===================================================
+// CLASS ErrorPlot
+// Description: Error plot with min/max value for
+// each datapoint
+//===================================================
+class ErrorPlot extends Plot {
+    private $errwidth=2;
+    
+    //---------------
+    // CONSTRUCTOR
+    function __construct($datay,$datax=false) {
+        parent::__construct($datay,$datax);
+        $this->numpoints /= 2;
+    }
+    //---------------
+    // PUBLIC METHODS
+
+    // Gets called before any axis are stroked
+    function PreStrokeAdjust($graph) {
+        if( $this->center ) {
+            $a=0.5; $b=0.5;
+            ++$this->numpoints;
+        } else {
+            $a=0; $b=0;
+        }
+        $graph->xaxis->scale->ticks->SetXLabelOffset($a);
+        $graph->SetTextScaleOff($b);
+        //$graph->xaxis->scale->ticks->SupressMinorTickMarks();
+    }
+
+    // Method description
+    function Stroke($img,$xscale,$yscale) {
+        $numpoints=count($this->coords[0])/2;
+        $img->SetColor($this->color);
+        $img->SetLineWeight($this->weight);
+
+        if( isset($this->coords[1]) ) {
+            if( count($this->coords[1])!=$numpoints )
+            JpGraphError::RaiseL(2003,count($this->coords[1]),$numpoints);
+            //("Number of X and Y points are not equal. Number of X-points:".count($this->coords[1])." Number of Y-points:$numpoints");
+            else
+            $exist_x = true;
+        }
+        else
+        $exist_x = false;
+
+        for( $i=0; $i<$numpoints; ++$i) {
+            if( $exist_x )
+            $x=$this->coords[1][$i];
+            else
+            $x=$i;
+
+            if( !is_numeric($x) ||
+            !is_numeric($this->coords[0][$i*2]) || !is_numeric($this->coords[0][$i*2+1]) ) {
+                continue;
+            }
+
+            $xt = $xscale->Translate($x);
+            $yt1 = $yscale->Translate($this->coords[0][$i*2]);
+            $yt2 = $yscale->Translate($this->coords[0][$i*2+1]);
+            $img->Line($xt,$yt1,$xt,$yt2);
+            $img->Line($xt-$this->errwidth,$yt1,$xt+$this->errwidth,$yt1);
+            $img->Line($xt-$this->errwidth,$yt2,$xt+$this->errwidth,$yt2);
+        }
+        return true;
+    }
+} // Class
+
+
+//===================================================
+// CLASS ErrorLinePlot
+// Description: Combine a line and error plot
+// THIS IS A DEPRECATED PLOT TYPE JUST KEPT FOR
+// BACKWARD COMPATIBILITY
+//===================================================
+class ErrorLinePlot extends ErrorPlot {
+    public $line=null;
+    //---------------
+    // CONSTRUCTOR
+    function __construct($datay,$datax=false) {
+        parent::__construct($datay,$datax);
+        // Calculate line coordinates as the average of the error limits
+        $n = count($datay);
+        for($i=0; $i < $n; $i+=2 ) {
+            $ly[]=($datay[$i]+$datay[$i+1])/2;
+        }
+        $this->line=new LinePlot($ly,$datax);
+    }
+
+    //---------------
+    // PUBLIC METHODS
+    function Legend($graph) {
+        if( $this->legend != "" )
+        $graph->legend->Add($this->legend,$this->color);
+        $this->line->Legend($graph);
+    }
+     
+    function Stroke($img,$xscale,$yscale) {
+        parent::Stroke($img,$xscale,$yscale);
+        $this->line->Stroke($img,$xscale,$yscale);
+    }
+} // Class
+
+
+//===================================================
+// CLASS LineErrorPlot
+// Description: Combine a line and error plot
+//===================================================
+class LineErrorPlot extends ErrorPlot {
+    public $line=null;
+    //---------------
+    // CONSTRUCTOR
+    // Data is (val, errdeltamin, errdeltamax)
+    function __construct($datay,$datax=false) {
+        $ly=array(); $ey=array();
+        $n = count($datay);
+        if( $n % 3 != 0 ) {
+            JpGraphError::RaiseL(4002);
+            //('Error in input data to LineErrorPlot. Number of data points must be a multiple of 3');
+        }
+        for($i=0; $i < $n; $i+=3 ) {
+            $ly[]=$datay[$i];
+            $ey[]=$datay[$i]+$datay[$i+1];
+            $ey[]=$datay[$i]+$datay[$i+2];
+        }
+        parent::__construct($ey,$datax);
+        $this->line=new LinePlot($ly,$datax);
+    }
+
+    //---------------
+    // PUBLIC METHODS
+    function Legend($graph) {
+        if( $this->legend != "" )
+        $graph->legend->Add($this->legend,$this->color);
+        $this->line->Legend($graph);
+    }
+     
+    function Stroke($img,$xscale,$yscale) {
+        parent::Stroke($img,$xscale,$yscale);
+        $this->line->Stroke($img,$xscale,$yscale);
+    }
+} // Class
+
+
+/* EOF */
+?>