255 lines
8.2 KiB
PHP
255 lines
8.2 KiB
PHP
<?php
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// Load the least-square regression class.
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require_once('./polynomial/XY_Plot.php' );
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//-----------------------------------------------------------
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$imageWidth = 969;
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$imageHeight = 600;
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$leftMargin = 25;
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$rightMargin = 50;
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$topMargin = 25;
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$bottomMargin = 40;
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// Verticle scale
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$Y_MajorScale = 0.1;
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$Y_MinorScale = $Y_MajorScale / 5;
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$X_MajorScale = 0.1;
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$X_MinorScale = $X_MajorScale / 5;
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//-----------------------------------------------------------
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// Create image
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$image = @imageCreate( $imageWidth , $imageHeight )
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or die( "Cannot Initialize new GD image stream" );
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//---------------------------------
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// Create basic color map
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//---------------------------------
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$colorMap = array();
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//$colorMap[ "Background" ] = imageColorAllocate( $image , 0xDB , 0xB3 , 0xE6 );
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$colorMap[ "Background" ] = imageColorAllocate( $image , 255, 255, 255 );
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// Create a standard color palette
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$colorMap[ "Black" ] = imagecolorallocate( $image, 0, 0, 0 );
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$colorMap[ "Red" ] = imagecolorallocate( $image, 192, 0, 0 );
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$colorMap[ "Green" ] = imagecolorallocate( $image, 0, 192, 0 );
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$colorMap[ "Blue" ] = imagecolorallocate( $image, 0, 0, 192 );
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$colorMap[ "Brown" ] = imagecolorallocate( $image, 48, 48, 0 );
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$colorMap[ "Cyan" ] = imagecolorallocate( $image, 0, 192, 192 );
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$colorMap[ "Purple" ] = imagecolorallocate( $image, 192, 0, 192 );
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$colorMap[ "LightGray" ] = imagecolorallocate( $image, 192, 192, 192 );
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$colorMap[ "DarkGray" ] = imagecolorallocate( $image, 48, 48, 48 );
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$colorMap[ "LightRed" ] = imagecolorallocate( $image, 255, 0, 0 );
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$colorMap[ "LightGreen" ] = imagecolorallocate( $image, 0, 255, 0 );
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$colorMap[ "LightBlue" ] = imagecolorallocate( $image, 0, 0, 255 );
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$colorMap[ "Yellow" ] = imagecolorallocate( $image, 255, 255, 0 );
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$colorMap[ "LightCyan" ] = imagecolorallocate( $image, 0, 255, 255 );
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$colorMap[ "LightPurple" ] = imagecolorallocate( $image, 255, 0, 255 );
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$colorMap[ "White" ] = imagecolorallocate( $image, 255, 255, 255 );
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$colorMap[ "DarkYellow" ] = imagecolorallocate( $image, 255, 214, 0 );
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$colorMap[ "Gray10" ] = imagecolorallocate( $image , 26 , 26 , 26 );
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$colorMap[ "Gray20" ] = imagecolorallocate( $image , 51 , 51 , 51 );
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$colorMap[ "Gray30" ] = imagecolorallocate( $image , 77 , 77 , 77 );
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$colorMap[ "Gray40" ] = imagecolorallocate( $image , 102 , 102 , 102 );
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$colorMap[ "Gray50" ] = imagecolorallocate( $image , 128 , 128 , 128 );
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$colorMap[ "Gray60" ] = imagecolorallocate( $image , 154 , 154 , 154 );
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$colorMap[ "Gray70" ] = imagecolorallocate( $image , 180 , 180 , 180 );
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$colorMap[ "Gray80" ] = imagecolorallocate( $image , 205 , 205 , 205 );
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$colorMap[ "Gray90" ] = imagecolorallocate( $image , 230 , 230 , 230 );
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// New plot
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$plot = new XY_PlotClass( $image );
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// Setup boundaries
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$plot->sizeWindow
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(
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$leftMargin,
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$topMargin,
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$imageWidth - $rightMargin,
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$imageHeight - $bottomMargin
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);
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// Draw border around graph area.
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imageRectangle
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(
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$image,
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$leftMargin,
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$topMargin,
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$imageWidth - $rightMargin,
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$imageHeight - $bottomMargin,
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$colorMap[ "LightGray" ]
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);
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//---------------------------------------------------------------------------
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//
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//---------------------------------------------------------------------------
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function plotRenderData( $data, $color )
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{
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global $plot;
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$plot->resetData();
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foreach ( $data as $point )
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$plot->addData( $point[ 0 ], $point[ 1 ] );
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$plot->setColor( $color );
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$plot->autoScaleX_MinMax( 0 );
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$plot->autoScaleY_MinMax( 1 );
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}
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//---------------------------------------------------------------------------
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// Custom vertical text-- just return value with dolor sign in front
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//---------------------------------------------------------------------------
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function textCallback( $Value )
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{
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return number_format( $Value, 2 );
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}
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//---------------------------------------------------------------------------
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//
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//---------------------------------------------------------------------------
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function plotAddScale()
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{
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global $plot;
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global $X_MajorScale;
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global $X_MinorScale;
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global $Y_MajorScale;
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global $Y_MinorScale;
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global $colorMap;
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// Setup and draw minor horizontal scale (right to left).
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$plot->SetX_MinorDivisionScale( $X_MinorScale );
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$plot->SetX_MinorDivisionColor( $colorMap[ "Gray90" ] );
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$plot->DrawX_MinorDivisions();
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// Setup and draw minor vertical scale (top to bottom).
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$plot->SetY_MinorDivisionScale( $Y_MinorScale );
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$plot->SetY_MinorDivisionColor( $colorMap[ "Gray90" ] );
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$plot->DrawY_MinorDivisions();
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//----------------------------------
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// Setup and draw major horizontal scale (right to left).
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//----------------------------------
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// Extend lines 5 pixels past margins for label.
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$plot->SetX_MajorDivisionExtention( 5 );
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// Scale.
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$plot->SetX_MajorDivisionScale( $X_MajorScale );
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// Division lines are blue.
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$plot->SetX_MajorDivisionColor( $colorMap[ "Gray80" ] );
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// Text labels are dark gray.
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$plot->SetX_MajorDivisionTextColor( $colorMap[ "Black" ] );
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$plot->SetX_MajorTextCallback( "textCallback" );
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// Draw it.
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$plot->DrawX_MajorDivisions();
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//----------------------------------
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// Setup and draw major vertical scale (top to bottom)
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//----------------------------------
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// Extend lines 5 pixels past margins for label.
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$plot->SetY_MajorDivisionExtention( 5 );
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// Scale.
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$plot->SetY_MajorDivisionScale( $Y_MajorScale );
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// Divisions in dark gray.
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$plot->SetY_MajorDivisionColor( $colorMap[ "Gray80" ] );
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$plot->SetY_MajorTextCallback( "textCallback" );
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// Lables in dark gray.
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$plot->SetY_MajorDivisionTextColor( $colorMap[ "Black" ] );
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// Draw it.
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$plot->DrawY_MajorDivisions();
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}
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function plotRenderRegression( $regression, $coefficients, $min, $max, $color )
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{
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global $plot;
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global $imageWidth;
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global $leftMargin;
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global $rightMargin;
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$plot->resetData();
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$frameWidth = $imageWidth - $leftMargin - $rightMargin;
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for ( $xIndex = 0; $xIndex < $frameWidth; ++$xIndex )
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{
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$x = $xIndex * ( $max - $min ) / $frameWidth + $min;
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$y = $regression->interpolate( $coefficients, $x );
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$plot->addData( $x, $y );
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}
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$plot->setColor( $color );
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$plot->renderWithLines();
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}
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function plotRectangleRange($scaleFrom,$scaleTo,$xFrom,$xTo, $color)
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{
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global $plot;
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global $imageWidth;
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global $leftMargin;
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global $rightMargin;
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global $imageHeight;
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global $topMargin;
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global $bottomMargin;
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global $image;
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$plot->resetData();
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$frameWidth = $imageWidth - $leftMargin - $rightMargin;
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$scaleCounter = $frameWidth/($scaleTo-$scaleFrom);
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if ($color == 'green_value')
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$rgb = imagecolorallocatealpha($image, 0, 255, 0, 100);
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else if ($color == 'yellow_value')
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$rgb = imagecolorallocatealpha($image, 255, 255, 0, 100);
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else if ($color == 'red_value')
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$rgb = imagecolorallocatealpha($image, 255, 0, 0, 100);
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if ($leftMargin+$xTo*$scaleCounter > $imageWidth-$rightMargin) $val=$imageWidth-$rightMargin;
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else $val=$leftMargin+$xTo*$scaleCounter;
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imagefilledrectangle($image, $leftMargin+$xFrom*$scaleCounter, $topMargin, $val, $imageHeight-$bottomMargin, $rgb);
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}
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function plotCircleRange($scaleXFrom,$scaleXTo,$scaleYFrom,$scaleYTo,$xParam,$yParam, $color)
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{
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global $plot;
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global $imageWidth;
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global $leftMargin;
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global $rightMargin;
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global $imageHeight;
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global $topMargin;
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global $bottomMargin;
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global $image;
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$plot->resetData();
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$frameWidth = $imageWidth - $leftMargin - $rightMargin;
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$frameHeight = $imageHeight - $topMargin - $bottomMargin;
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$scaleXCounter = $frameWidth/($scaleXTo-$scaleXFrom);
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$scaleYCounter = $frameHeight/($scaleYTo-$scaleYFrom);
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if ($leftMargin+$xParam*$scaleXCounter > $imageWidth-$rightMargin) $valX=$imageWidth-$rightMargin;
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else $valX=$leftMargin+$xParam*$scaleXCounter;
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$valY=($imageHeight-$bottomMargin)-$yParam*$scaleYCounter;
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//$grey = imagecolorallocatealpha($image, 150, 150, 150, 100);
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imagefilledellipse($image, $valX, $valY, 9, 9, $color);
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}
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?>
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