1159 lines
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HTML
1159 lines
30 KiB
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Chart.js
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Getting Started
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Integration
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Usage
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General
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Responsive
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Pixel Ratio
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Interactions
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Events
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Modes
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Options
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<a href="../general/colors.html">
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Colors
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Fonts
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<li class="chapter " data-level="1.4" data-path="../configuration/">
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<a href="../configuration/">
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Configuration
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<ul class="articles">
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<a href="../configuration/animations.html">
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Animations
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Layout
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<a href="../configuration/legend.html">
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Legend
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<a href="../configuration/title.html">
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Title
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<a href="../configuration/tooltip.html">
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Tooltip
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</a>
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</li>
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<li class="chapter " data-level="1.4.6" data-path="../configuration/elements.html">
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<a href="../configuration/elements.html">
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Elements
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</ul>
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<li class="chapter " data-level="1.5" data-path="./">
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<a href="./">
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Charts
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1" data-path="line.html">
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<a href="line.html">
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Line
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</a>
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<li class="chapter " data-level="1.5.2" data-path="bar.html">
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<a href="bar.html">
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Bar
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</a>
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</li>
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<li class="chapter " data-level="1.5.3" data-path="radar.html">
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<a href="radar.html">
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Radar
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</a>
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<li class="chapter " data-level="1.5.4" data-path="doughnut.html">
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<a href="doughnut.html">
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Doughnut & Pie
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</a>
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</li>
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<li class="chapter " data-level="1.5.5" data-path="polar.html">
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<a href="polar.html">
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Polar Area
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</a>
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</li>
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<li class="chapter active" data-level="1.5.6" data-path="bubble.html">
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<a href="bubble.html">
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Bubble
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</a>
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</li>
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<li class="chapter " data-level="1.5.7" data-path="scatter.html">
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<a href="scatter.html">
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Scatter
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</a>
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</li>
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<li class="chapter " data-level="1.5.8" data-path="area.html">
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<a href="area.html">
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Area
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</a>
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</li>
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<li class="chapter " data-level="1.5.9" data-path="mixed.html">
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<a href="mixed.html">
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Mixed
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.6" data-path="../axes/">
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<a href="../axes/">
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Axes
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.6.1" data-path="../axes/cartesian/">
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<a href="../axes/cartesian/">
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Cartesian
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.6.1.1" data-path="../axes/cartesian/category.html">
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<a href="../axes/cartesian/category.html">
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Category
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</a>
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</li>
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<li class="chapter " data-level="1.6.1.2" data-path="../axes/cartesian/linear.html">
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<a href="../axes/cartesian/linear.html">
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Linear
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</a>
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</li>
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<li class="chapter " data-level="1.6.1.3" data-path="../axes/cartesian/logarithmic.html">
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<a href="../axes/cartesian/logarithmic.html">
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Logarithmic
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</a>
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</li>
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<li class="chapter " data-level="1.6.1.4" data-path="../axes/cartesian/time.html">
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<a href="../axes/cartesian/time.html">
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Time
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.6.2" data-path="../axes/radial/">
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<a href="../axes/radial/">
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Radial
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.6.2.1" data-path="../axes/radial/linear.html">
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<a href="../axes/radial/linear.html">
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Linear
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.6.3" data-path="../axes/labelling.html">
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<a href="../axes/labelling.html">
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Labelling
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</a>
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</li>
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<li class="chapter " data-level="1.6.4" data-path="../axes/styling.html">
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<a href="../axes/styling.html">
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Styling
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.7" data-path="../developers/">
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<a href="../developers/">
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Developers
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.7.1" data-path="../developers/api.html">
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<a href="../developers/api.html">
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Chart.js API
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</a>
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</li>
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<li class="chapter " data-level="1.7.2" data-path="../developers/updates.html">
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<a href="../developers/updates.html">
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Updating Charts
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</a>
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</li>
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<li class="chapter " data-level="1.7.3" data-path="../developers/plugins.html">
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<a href="../developers/plugins.html">
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Plugins
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</a>
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</li>
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<li class="chapter " data-level="1.7.4" data-path="../developers/charts.html">
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<a href="../developers/charts.html">
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New Charts
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</a>
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</li>
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<li class="chapter " data-level="1.7.5" data-path="../developers/axes.html">
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<a href="../developers/axes.html">
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New Axes
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</a>
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</li>
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<li class="chapter " data-level="1.7.6" data-path="../developers/contributing.html">
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<a href="../developers/contributing.html">
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Contributing
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.8" data-path="../notes/">
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<a href="../notes/">
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Additional Notes
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.8.1" data-path="../notes/comparison.html">
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<a href="../notes/comparison.html">
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Comparison Table
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Popular Extensions
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<!-- Title -->
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<h1>
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<i class="fa fa-circle-o-notch fa-spin"></i>
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<a href=".." >Bubble</a>
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</h1>
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</div>
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<div class="page-wrapper" tabindex="-1" role="main">
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<div class="search-noresults">
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<section class="normal markdown-section">
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<h1 id="bubble-chart">Bubble Chart</h1>
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<p>A bubble chart is used to display three dimensions of data at the same time. The location of the bubble is determined by the first two dimensions and the corresponding horizontal and vertical axes. The third dimension is represented by the size of the individual bubbles.</p>
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<p><div class="chartjs-wrapper"><canvas id="chartjs-6" class="chartjs" width="undefined" height="undefined"></canvas><script>new Chart(document.getElementById("chartjs-6"),{"type":"bubble","data":{"datasets":[{"label":"First Dataset","data":[{"x":20,"y":30,"r":15},{"x":40,"y":10,"r":10}],"backgroundColor":"rgb(255, 99, 132)"}]}});</script></div></p>
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<h2 id="example-usage">Example Usage</h2>
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<pre><code class="lang-javascript"><span class="hljs-comment">// For a bubble chart</span>
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<span class="hljs-keyword">var</span> myBubbleChart = <span class="hljs-keyword">new</span> Chart(ctx,{
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type: <span class="hljs-string">'bubble'</span>,
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data: data,
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options: options
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});
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</code></pre>
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<h2 id="dataset-properties">Dataset Properties</h2>
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<p>The bubble chart allows a number of properties to be specified for each dataset. These are used to set display properties for a specific dataset. For example, the colour of the bubbles is generally set this way.</p>
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<table>
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th style="text-align:center"><a href="../general/options.html#scriptable-options">Scriptable</a></th>
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<th style="text-align:center"><a href="../general/options.html#indexable-options">Indexable</a></th>
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<th>Default</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a href="#styling"><code>backgroundColor</code></a></td>
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<td><a href="../general/colors.html"><code>Color</code></a></td>
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<td style="text-align:center">Yes</td>
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<td style="text-align:center">Yes</td>
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<td><code>'rgba(0,0,0,0.1)'</code></td>
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</tr>
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<tr>
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<td><a href="#styling"><code>borderColor</code></a></td>
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<td><a href="../general/colors.html"><code>Color</code></a></td>
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<td style="text-align:center">Yes</td>
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<td style="text-align:center">Yes</td>
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<td><code>'rgba(0,0,0,0.1)'</code></td>
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</tr>
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<tr>
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<td><a href="#styling"><code>borderWidth</code></a></td>
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<td><code>Number</code></td>
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<td style="text-align:center">Yes</td>
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<td style="text-align:center">Yes</td>
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<td><code>3</code></td>
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</tr>
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<tr>
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<td><a href="#data-structure"><code>data</code></a></td>
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<td><code>Object[]</code></td>
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<td style="text-align:center">-</td>
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<td style="text-align:center">-</td>
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<td><strong>required</strong></td>
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</tr>
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<tr>
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<td><a href="#interactions"><code>hoverBackgroundColor</code></a></td>
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<td><a href="../general/colors.html"><code>Color</code></a></td>
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<td style="text-align:center">Yes</td>
|
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<td style="text-align:center">Yes</td>
|
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<td><code>undefined</code></td>
|
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</tr>
|
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<tr>
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<td><a href="#interactions"><code>hoverBorderColor</code></a></td>
|
|
<td><a href="../general/colors.html"><code>Color</code></a></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>undefined</code></td>
|
|
</tr>
|
|
<tr>
|
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<td><a href="#interactions"><code>hoverBorderWidth</code></a></td>
|
|
<td><code>Number</code></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>1</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><a href="#interactions"><code>hoverRadius</code></a></td>
|
|
<td><code>Number</code></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>4</code></td>
|
|
</tr>
|
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<tr>
|
|
<td><a href="#interactions"><code>hitRadius</code></a></td>
|
|
<td><code>Number</code></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>1</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><a href="#labeling"><code>label</code></a></td>
|
|
<td><code>String</code></td>
|
|
<td style="text-align:center">-</td>
|
|
<td style="text-align:center">-</td>
|
|
<td><code>undefined</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><a href="#styling"><code>pointStyle</code></a></td>
|
|
<td><code>String</code></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>circle</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><a href="#styling"><code>radius</code></a></td>
|
|
<td><code>Number</code></td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td style="text-align:center">Yes</td>
|
|
<td><code>3</code></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h3 id="labeling">Labeling</h3>
|
|
<p><code>label</code> defines the text associated to the dataset and which appears in the legend and tooltips.</p>
|
|
<h3 id="styling">Styling</h3>
|
|
<p>The style of each bubble can be controlled with the following properties:</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>backgroundColor</code></td>
|
|
<td>bubble background color</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>borderColor</code></td>
|
|
<td>bubble border color</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>borderWidth</code></td>
|
|
<td>bubble border width (in pixels)</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>pointStyle</code></td>
|
|
<td>bubble <a href="../configuration/elements#point-styles">shape style</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>radius</code></td>
|
|
<td>bubble radius (in pixels)</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>All these values, if <code>undefined</code>, fallback to the associated <a href="../configuration/elements.html#point-configuration"><code>elements.point.*</code></a> options.</p>
|
|
<h3 id="interactions">Interactions</h3>
|
|
<p>The interaction with each bubble can be controlled with the following properties:</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>hoverBackgroundColor</code></td>
|
|
<td>bubble background color when hovered</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>hoverBorderColor</code></td>
|
|
<td>bubble border color hovered</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>hoverBorderWidth</code></td>
|
|
<td>bubble border width when hovered (in pixels)</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>hoverRadius</code></td>
|
|
<td>bubble <strong>additional</strong> radius when hovered (in pixels)</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>hitRadius</code></td>
|
|
<td>bubble <strong>additional</strong> radius for hit detection (in pixels)</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>All these values, if <code>undefined</code>, fallback to the associated <a href="../configuration/elements.html#point-configuration"><code>elements.point.*</code></a> options.</p>
|
|
<h2 id="default-options">Default Options</h2>
|
|
<p>We can also change the default values for the Bubble chart type. Doing so will give all bubble charts created after this point the new defaults. The default configuration for the bubble chart can be accessed at <code>Chart.defaults.bubble</code>.</p>
|
|
<h2 id="data-structure">Data Structure</h2>
|
|
<p>Bubble chart datasets need to contain a <code>data</code> array of points, each points represented by an object containing the following properties:</p>
|
|
<pre><code class="lang-javascript">{
|
|
<span class="hljs-comment">// X Value</span>
|
|
x: <Number>,
|
|
|
|
// Y Value
|
|
y: <Number>,
|
|
|
|
// Bubble radius in pixels (not scaled).
|
|
r: <Number>
|
|
}
|
|
</code></pre>
|
|
<p><strong>Important:</strong> the radius property, <code>r</code> is <strong>not</strong> scaled by the chart, it is the raw radius in pixels of the bubble that is drawn on the canvas.</p>
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</section>
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