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PHP-Boxplot

1. Features

PHP-Boxplot is a PHP Library which is easy to use for creating boxplots.

Outlier Detection can be turned on/off.

Plotting Mean, Plotting Jitter and Plotting Outliers are available.

 

Multiple datasets can be displayed side by side at the same time.

Legends can also be displayed.

Transparent background is also supported.

Contents

3. Requirements

  • PHP 8.1 or later
  • Imagick PHP Extension
  • Composer

4. Installation

composer require macocci7/php-boxplot

5. Usage

5.1. Basic Usage

  • PHP: examples/BasicUsage.php

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $data = [
        '1st' => [ 75, 82, 96, 43, 78, 91, 84, 87, 93, ],
        '2nd' => [ 66, 74, 62, 100, 72, 68, 59, 76, 65, ],
        '3rd' => [ 56, 0, 45, 76, 58, 52, 13, 48, 54, 68, ],
        '4th' => [ 68, 32, 56, 92, 67, 72, 45, 76, 48, 73, ],
        '5th' => [ 70, 58, 62, 88, 62, 68, 56, 63, 64, 78, ],
    ];
    
    $bp = new Boxplot();
    
    $bp->setData($data)
       ->create('img/BasicUsage.png');
  • Result:

    • Outlier Detection is enabled by default.
    • Outliers are plotted as red dods.
    • The Scale Range is 10% larger than the Data Range.
    • Horizontal grid lines are drawn at intervals of 10% of the Scale Range.
    • The hash keys of the data are used as the labels for the X axis.
  • Details:

    • Import Autoloader: require_once __DIR__ . '/../vendor/autoload.php'
    • Declare: use Macocci7\PhpBoxplot\Boxplot
    • Instantiate: new Boxplot()
    • Set Data: setData($data)
      • Acceptable Data Type: array<int|string, array<int|float>>
    • Create Image: create($path)

5.2. Adjusting the Display By Methods

Adjusting Scale Size, Grid Pitch, Showing Vertical Grids,

Setting Labels for Each Boxplot, Labels for X Axis, Labels For Y Axis

And Setting Caption can be done as follows:

  • PHP:

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $data = [
        '1st' => [ 75, 82, 96, 43, 78, 91, 84, 87, 93, ],
        '2nd' => [ 66, 74, 62, 100, 72, 68, 59, 76, 65, ],
        '3rd' => [ 56, 0, 45, 76, 58, 52, 13, 48, 54, 68, ],
        '4th' => [ 68, 32, 56, 92, 67, 72, 45, 76, 48, 73, ],
        '5th' => [ 70, 58, 62, 88, 62, 68, 56, 63, 64, 78, ],
    ];
    
    $bp = new Boxplot();
    
    $bp->setData($data)
       ->limit(0, 100)
       ->gridHeightPitch(20)
       ->gridVerticalOn()
       ->meanOn()
       ->jitterOn()
       ->legendOn()
       ->labels([ '#1', '#2', '#3', '#4', '#5', ])
       ->labelX('Achievement Test')
       ->labelY('Score')
       ->caption('Achievement Test Results in 2023')
       ->legends(['Donald Biden'])
       ->create('img/AdjustDisplayByMethods.png');
  • Result:

  • Details:

    • Set Limits: limit(int|float $lower, int|float $upper)

    • Set Grid Pitch: gridHeightPitch(int|float $pitch)

    • Set Vertical Grid Visibility:

      • gridVerticalOn()
      • gridVerticalOff()
    • Set Labels: labels(string[] $labels)

    • Set Label for X Axis: labelX(string $labelX)

    • Set Label for Y Axis: labelY(string $labelY)

    • Set Caption: caption(string $caption)

    • Available Methods:

      Note: $colorCode must be in #RGB or #RRGGBB format.

      Method Detail
      resize(int $width, int $height) Resizes Canvas Size
      bgcolor(string $colorCode) Sets Canvas Background Color
      fontColor(string $colorCode) Sets Font Color
      axisColor(string $colorCode) Sets Axis Color
      gridColor(string $colorCode) Sets Grid Color
      boxBorder(int $width, string $colorCode) Sets Box Border Color
      whisker(int $width, string $colorCode) Sets Whisker Width and Color
      gridHeightPitch(int|float $pitch) Sets Grid Pitch
      boxWidth(int $width) Sets Box Width
      boxBackground(array $colorCodes) Sets Box Background Color Set
      labels(array $labels) Sets Labels for Each Box
      labelX(string $label) Sets Label for X Axis
      labelY(string $label) Sets Label for Y Axis
      caption(string $caption) Sets Caption
      legends(array $legends) Sets Legend Labels
      legendBgcolor(string $colorCode) Sets Legends Area Background Color
      gridVerticalOn() Sets Visibility of Vertical Grid On
      gridVerticalOff() Sets Visibility of Vertical Grid Off
      outlierOn() Sets Outlier Detection On
      outlierOff() Sets Outlier Detection Off
      jitterOn() Sets Jitter Plot On
      jitterOff() Sets Jitter Plot Off
      meanOn() Sets Plotting Mean On
      meanOff() Sets Plotting Mean Off
      legendOn() Sets Displaying Legends On
      legendOff() Sets Displaying Legends Off

5.3. Multiple Data Set

Multiple datasets can be displayed side by side at the same time.

  • PHP: examples/MultipleDataSet.php

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $dataSet = [
        'John' => [
            '1st' => [75, 82, 96, 43, 78, 91, 84, 87, 93, ],
            '2nd' => [66, 74, 62, 100, 72, 68, 59, 76, 65, ],
            '3rd' => [56, 0, 45, 76, 58, 52, 13, 48, 54, 68, ],
            '4th' => [68, 32, 56, 92, 67, 72, 45, 76, 48, 73, ],
            '5th' => [70, 58, 62, 88, 62, 68, 56, 63, 64, 78, ],
        ],
        'Jake' => [
            'test#1' => [62, 35, 48, 43, 56, 78, 32, 24, 29, ],
            'test#2' => [37, 92, 56, 36, 14, 86, 41, 58, 47, ],
            'test#3' => [49, 83, 0, 48, 64, 73, 50, 46, 38, 92, ],
            'test#4' => [53, 44, 34, 51, 74, 68, 53, 86, 24, 66, ],
            'test#5' => [83, 61, 55, 96, 87, 46, 21, 19, 88, 68, ],
        ],
        'Hugo' => [
            'test01' => [73, 36, 0, 11, 40, 76, 24, 46, 83, ],
            'test02' => [69, 42, 76, 8, 92, 84, 45, 34, 67, ],
            'test03' => [100, 46, 34, 77, 85, 47, 91, 85, 66, 79, ],
            'test04' => [0, 14, 32, 24, 54, 44, 56, 32, 59, 38, ],
            'test05' => [69, 84, 65, 42, 33, 80, 74, 54, 75, 56, ],
        ],
    ];
    
    $bp = new Boxplot();
    $bp->setDataset($dataSet)
       ->limit(0, 100)
       ->gridHeightPitch(20)
       ->gridVerticalOn()
       ->legendOn()
       ->meanOn()
       ->labelX('Achievement Test')
       ->labelY('Score')
       ->caption('Achievement Test Results in 2023')
       ->create('img/MultipleDataSet.png');
  • Result: examples/img/MultipleDataSet.png

  • Details:

    • Set Data Set: setDataset(array $dataSet)
      • $dataSet: array<int|string, array<int|string, array<int|float>>>
    • The result of array_keys($dataSet) will be set as the legends.
      • In this case: [ 'John', 'Jake', 'Hugo', ] will be set as the legends.
    • The result of array_keys($dataSet[array_keys($dataSet)[0]]) will be set as the labels.
      • In this case: [ '1st', '2nd', '3rd', '4th', '5th', ] will be set as the legends.
    • legends(array $legends) can overwrite legends.
    • labels(array $labels) can overwrite labels.

5.4. Adjusting the Display By Neon File

You can adjust the display by using Neon file.

First, prepare a Neon file like this:

  • Neon: examples/AdjustDisplayByNeon.neon

    # Configuration for BoxplotExample.php
    
    dataSet:
        'John': [
            1st: [75, 82, 96, 43, 78, 91, 84, 87, 93]
            2nd: [66, 74, 62, 100, 72, 68, 59, 76, 65]
            3rd: [56, 0, 45, 76, 58, 52, 13, 48, 54, 68]
            4th: [68, 32, 56, 92, 67, 72, 45, 76, 48, 73]
            5th: [70, 58, 62, 88, 62, 68, 56, 63, 64, 78]
        ]
        'Jake': [
            'test#1': [62, 35, 48, 43, 56, 78, 32, 24, 29]
            'test#2': [37, 92, 56, 36, 14, 86, 41, 58, 47]
            'test#3': [49, 83, 0, 48, 64, 73, 50, 46, 38, 92]
            'test#4': [53, 44, 34, 51, 74, 68, 53, 86, 24, 66]
            'test#5': [83, 61, 55, 96, 87, 46, 21, 19, 88, 68]
        ]
        'Hugo': [
            'test01': [73, 36, 0, 11, 40, 76, 24, 46, 83]
            'test02': [69, 42, 76, 8, 92, 84, 45, 34, 67]
            'test03': [100, 46, 34, 77, 85, 47, 91, 85, 66, 79]
            'test04': [0, 14, 32, 24, 54, 44, 56, 32, 59, 38]
            'test05': [69, 84, 65, 42, 33, 80, 74, 54, 75, 56]
        ]
    
    limitUpper: 100
    limitLower: 0
    
    #canvasWidth: 600
    #canvasHeight: 400
    canvasBackgroundColor: '#333399'
    #frameXRatio: 0.7
    #frameYRatio: 0.6
    
    axisColor: '#999999'
    axisWidth: 2
    
    #gridColor: '#cccccc'
    #gridWidth: 1
    
    gridHeightPitch: 10
    gridVertical: true
    
    #boxWidth: 20
    #boxBackgroundColors:
    #    - '#9999cc'
    #    - '#cc9999'
    #    - '#99cc99'
    #    - '#99cccc'
    #    - '#cc6666'
    #    - '#ffcc99'
    #    - '#cccc99'
    #    - '#cc99cc'
    #boxBorderColor: '#3333cc'
    #boxBorderWidth: 1
    
    whiskerColor: '#ffff00'
    #whiskerWidth: 1
    
    #fontPath: 'fonts/ipaexg.ttf' # IPA ex Gothic 00401
    #fontSize: 16
    fontColor: '#cccccc'
    
    outlier: true
    #outlierDiameter: 2
    #outlierColor: '#ff0000'
    
    #jitter: true
    #jitterColor: '#009900'
    #jitterDiameter: 2
    
    mean: true
    #meanColor: '#ff0000'
    
    #labels: [ '1st', '2nd', '3rd', '4th', '5th' ]
    labelX: 'Achievement Test'
    labelY: 'Score'
    caption: 'Adjusting the Display By Neon File'
    
    legend: true
    legendBackgroundColor: '#666666'
    #legends: [ 'John', 'Jake', 'Hugo', ]
    legendWidth: 100
    legendFontSize: 10
    
    # Default Color Set
    #colors:
    #    - '#9999cc'
    #    - '#cc9999'
    #    - '#99cc99'
    #    - '#99cccc'
    #    - '#cc6666'
    #    - '#ffcc99'
    #    - '#cccc99'
    #    - '#cc99cc'

Second, Code PHP like this:

  • PHP: examples/AdjustDisplayByNeon.php

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $bp = new Boxplot();
    $bp->config('AdjustDisplayByNeon.neon')
       ->create('img/AdjustDisplayByNeon.png');

Then, run the PHP Code.

5.5. Adjusting the Display By Array

You can Adjust the Display by using Array.

  • PHP: examples/AdjustDisplayByArray.php

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $conf = [
        'dataSet' => [
            'John' => [
                '1st' => [75, 82, 96, 43, 78, 91, 84, 87, 93, ],
                '2nd' => [66, 74, 62, 100, 72, 68, 59, 76, 65, ],
                '3rd' => [56, 0, 45, 76, 58, 52, 13, 48, 54, 68, ],
                '4th' => [68, 32, 56, 92, 67, 72, 45, 76, 48, 73, ],
                '5th' => [70, 58, 62, 88, 62, 68, 56, 63, 64, 78, ],
            ],
            'Jake' => [
                'test#1' => [62, 35, 48, 43, 56, 78, 32, 24, 29, ],
                'test#2' => [37, 92, 56, 36, 14, 86, 41, 58, 47, ],
                'test#3' => [49, 83, 0, 48, 64, 73, 50, 46, 38, 92, ],
                'test#4' => [53, 44, 34, 51, 74, 68, 53, 86, 24, 66, ],
                'test#5' => [83, 61, 55, 96, 87, 46, 21, 19, 88, 68, ],
            ],
            'Hugo' => [
                'test01' => [73, 36, 0, 11, 40, 76, 24, 46, 83, ],
                'test02' => [69, 42, 76, 8, 92, 84, 45, 34, 67, ],
                'test03' => [100, 46, 34, 77, 85, 47, 91, 85, 66, 79, ],
                'test04' => [0, 14, 32, 24, 54, 44, 56, 32, 59, 38, ],
                'test05' => [69, 84, 65, 42, 33, 80, 74, 54, 75, 56, ],
            ],
        ],
        'limitUpper' => 100,
        'limitLower' => 0,
        'canvasBackgroundColor' => '#333399',
        'axisColor' => '#999999',
        'axisWidth' => 2,
        'gridHeightPitch' => 10,
        'gridVertical' => true,
        'whiskerColor' => '#ffff00',
        'fontColor' => '#cccccc',
        'outlier' => true,
        'mean' => true,
        'labelX' => 'Achievement Test',
        'labelY' => 'Score',
        'caption' => 'Adjusting the Display By Array',
        'legend' => true,
        'legendBackgroundColor' => '#666666',
        'legendWidth' => 100,
        'legendFontSize' => 10,
    ];
    
    $bp = new Boxplot();
    $bp->config($conf)
       ->create('img/AdjustDisplayByArray.png');
  • Result: examples/img/AdjustDisplayByArray.png

5.6. Transparent Background

You can set transparent background like this.

  • PHP: examples/TransparentBackground.php

    <?php
    
    require_once __DIR__ . '/../vendor/autoload.php';
    
    use Macocci7\PhpBoxplot\Boxplot;
    
    $data = [
        '1st' => [75, 82, 96, 43, 78, 91, 84, 87, 93],
        '2nd' => [66, 74, 62, 100, 72, 68, 59, 76, 65],
        '3rd' => [56, 0, 45, 76, 58, 52, 13, 48, 54, 68],
        '4th' => [68, 32, 56, 92, 67, 72, 45, 76, 48, 73],
        '5th' => [70, 58, 62, 88, 62, 68, 56, 63, 64, 78],
    ];
    
    $bp = new Boxplot();
    
    $bp->setData($data)
       ->config([
        // This results in Transparent Background
        'canvasBackgroundColor' => null,
    ])
       ->limit(0, 100)
       ->gridHeightPitch(10)
       ->gridVerticalOn()
       ->outlierOn()
       ->meanOn()
       ->labelX('Examination')
       ->labelY('Score')
       ->caption('Transparent Background')
       ->create('img/TransparentBackground.png');
  • Result: examples/img/TransparentBackground.png

Examples

License

MIT


Document created: 2023/05/28

Document updated: 2024/04/18

Copyright 2023 - 2024 macocci7

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PHP-Boxplot creates boxplots using FrequencyTable.

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