A jQuery plugin for creating scatterplot charts
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README.md

Scatterplot.js

######(v1.1.1)

A jQuery plugin for creating 2D scatter plot graphs and charts.

Demo

Installation

Download scatterplot.min.js and scatterplot.css from GitHub. Add these files to your site by adding the following references in your HTML file:

<link href="scatterplot.css" rel="stylesheet" type="text/css" />
<script src="scatterplot.min.js"></script>

Usage

Create a HTML element to act as your graph and child elements to act as points:

<div id="scatterplot">
    <span id="point"></span>
</div>

With no configuration (default):

$(document).ready(function () {
    $('#scatterplot').scatter();
    $('#point').plot();
});

With settings (static):

$(document).ready(function () {
    $('#scatterplot').scatter({ height: 500, width: 500, xLabel: 'X-Axis Label', yLabel: 'Y-Axis Label', rows: 4, columns: 5, subsections: 4 });
    $('#point1').plot({ xPos: 100, yPos: 100, color: 'red' });
    $('#point2').plot({ xPos: 320, yPos: 145, radius: 30, color: 'blue' });
    $('#point3').plot({ xPos: 460, yPos: 410, radius: 10, color: 'green' });
});

With settings (responsive):

$(document).ready(function () {
    $('#scatterplot').scatter({ height: 500, width: '50%', xLabel: 'X-Axis Label', yLabel: 'Y-Axis Label', rows: 5, columns: 5, subsections: 5, responsive: true, xUnits: ["0%", "20%", "40%", "60%", "80%", "100%"], yUnits: [0, 10, 20, 30, 40, 50] });
    $('#point1').plot({ xPos: '10%', yPos: '10%', color: 'red' });
    $('#point2').plot({ xPos: '60%', yPos: '40%', radius: 30, color: 'blue' });
    $('#point3').plot({ xPos: '90%', yPos: '75%', radius: 10, color: 'green' });
});

Plotting By Class (static):

<div id="scatterplot">
    <span class="point" style="left: 100px; bottom: 100px;"></span>
    <span class="point" style="left: 300px; bottom: 250px; background-color: blue;"></span>
    <span class="point" style="left: 400px; bottom: 450px; background-color: green; width: 15px;"></span>
</div> 
$(document).ready(function () {
    $('#scatterplot').scatter({ height: 500, width: 500, xLabel: 'X-Axis', yLabel: 'Y-Axis', rows: 5, columns: 5, subsections: 5 });
    $('.point').plot();
}); 

Plotting By Class (responsive):

<div id="scatterplot">
    <span class="point" style="left: 20%; bottom: 20%;"></span>
    <span class="point" style="left: 50%; bottom: 50%; background-color: #f00ff0;"></span>
    <span class="point" style="left: 70%; bottom: 80%; background-color: blue; width: 15px;"></span>
</div> 
$(document).ready(function () {
$('#scatterplot').scatter({ height: 500, width: 500, xLabel: 'X-Axis', yLabel: 'Y-Axis', rows: 5, columns: 5, subsections: 5, responsive: true });
    $('.point').plot();
}); 

Settings

$('#scatterplot').scatter({
    height: 300,                // Height of the graph (ex: 500, '50%')
    width: 300,                 // Width of the graph (ex: 500, '50%')
    xLabel: '',                 // Text of label for X-axis
    yLabel: '',                 // Text of label for Y-axis
    rows: 1,                    // Number of rows in graph
    columns: 1,                 // Number of columns in graph
    subsections: 1,             // Number of subsections for each row/column
    color: '#CCC',              // Background color of graph
    responsive: false,          // Set whether graph is responsive (position of labels, units, lines, points set to percentages)
    xUnits: [],                 // Array of units for X-axis (will be evenly spaced from bottom-left corner to bottom-right corner) (ex: ["0%", "20%", "40%", "60%", "80%", "100%"], [0, 10, 20, 30, 40, 50])
    yUnits: []                  // Array of units for Y-axis (will be evenly spaced from bottom-left corner to bottom-right corner) (ex: ["0%", "20%", "40%", "60%", "80%", "100%"], [0, 10, 20, 30, 40, 50])
});

When creating points, the position, background color, and width can be set using inline styling:

<span id="point" style="left: 100px; bottom: 100px; background-color: red; width: 30px;"></span>
<span id="point" style="left: 50%; bottom: 50%; background-color: #FFFF00; width: 2em;"></span>
<span id="point" style="left: 25%; bottom: 50px; background-color: rgba(255, 255, 0, .5); width: 10%;"></span> 

TODOs

  • Improve documentation
  • Clean up and optimize code
  • Create functionality for plotting an array of points

Issues

  • Graph background-position (used for subsections) not aligned correctly for responsive graphs (Chrome)
  • Graph background-image (used for subsections) does not work for responsive graphs (IE)
  • Points shift slightly when resizing responsive graphs (All browsers)

License

Copyright 2013 Paul Woidke

Licensed under the MIT License