Initial commit

2026-09-03 11:24:19 +02:00
commit 6ed3153f36
1897 changed files with 538007 additions and 0 deletions
@@ -0,0 +1,102 @@
+<?php
+require_once('./polynomial/XY_Plot.php' );
+
+function plotRenderData( $data, $color )
+{
+    global $plot;
+
+    $plot->resetData();
+    foreach ( $data as $point )
+        $plot->addData( $point[ 0 ], $point[ 1 ] );
+
+    $plot->setColor( $color );
+
+    $plot->autoScaleX_MinMax( 0 );
+    $plot->autoScaleY_MinMax( 1 );
+}
+function textCallback( $Value )
+{
+    return number_format( $Value, 1 );
+}
+function plotAddScale()
+{
+    global $plot;
+    global $X_MajorScale;
+    global $X_MinorScale;
+    global $Y_MajorScale;
+    global $Y_MinorScale;
+    global $colorMap;
+
+    // Setup and draw minor horizontal scale (right to left).
+    $plot->SetX_MinorDivisionScale( $X_MinorScale );
+    $plot->SetX_MinorDivisionColor( $colorMap[ "Gray90" ] );
+    $plot->DrawX_MinorDivisions();
+
+    // Setup and draw minor vertical scale (top to bottom).
+    $plot->SetY_MinorDivisionScale( $Y_MinorScale );
+    $plot->SetY_MinorDivisionColor( $colorMap[ "Gray90" ] );
+    $plot->DrawY_MinorDivisions();
+
+    //----------------------------------
+    // Setup and draw major horizontal scale (right to left).
+    //----------------------------------
+
+    // Extend lines 5 pixels past margins for label.
+    $plot->SetX_MajorDivisionExtention( 5 );
+
+    // Scale.
+    $plot->SetX_MajorDivisionScale( $X_MajorScale );
+
+    // Division lines are blue.
+    $plot->SetX_MajorDivisionColor( $colorMap[ "Gray80" ] );
+
+    // Text labels are dark gray.
+    $plot->SetX_MajorDivisionTextColor( $colorMap[ "Black" ] );
+    $plot->SetX_MajorTextCallback( "textCallback" );
+
+    // Draw it.
+    $plot->DrawX_MajorDivisions();
+
+    //----------------------------------
+    // Setup and draw major vertical scale (top to bottom)
+    //----------------------------------
+
+    // Extend lines 5 pixels past margins for label.
+    $plot->SetY_MajorDivisionExtention( 5 );
+
+    // Scale.
+    $plot->SetY_MajorDivisionScale( $Y_MajorScale );
+
+    // Divisions in dark gray.
+    $plot->SetY_MajorDivisionColor( $colorMap[ "Gray80" ] );
+    $plot->SetY_MajorTextCallback( "textCallback" );
+
+    // Lables in dark gray.
+    $plot->SetY_MajorDivisionTextColor( $colorMap[ "Black" ] );
+
+    // Draw it.
+    $plot->DrawY_MajorDivisions();
+}
+function plotRenderRegression( $regression, $coefficients, $min, $max, $color )
+{
+    global $plot;
+    global $imageWidth;
+    global $leftMargin;
+    global $rightMargin;
+
+    $plot->resetData();
+
+    $frameWidth = $imageWidth - $leftMargin - $rightMargin;
+    for ( $xIndex = 0; $xIndex < $frameWidth; ++$xIndex )
+    {
+        $x = $xIndex * ( $max - $min ) / $frameWidth + $min;
+        $y = $regression->interpolate( $coefficients, $x );
+        $plot->addData( $x, $y );
+    }
+
+    $plot->setColor( $color );
+    $plot->renderWithLines();
+
+}
+
+?>