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Chart.js
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Polar Area
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Bubble
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Scatter
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Area
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Mixed
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Axes
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Cartesian
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Category
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Linear
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Logarithmic
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Time
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Radial
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Linear
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Labelling
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Styling
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Chart.js API
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Contributing
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Additional Notes
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Comparison Table
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Popular Extensions
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License
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<h1 id="contributing">Contributing</h1>
<p>New contributions to the library are welcome, but we ask that you please follow these guidelines:</p>
<ul>
<li>Use tabs for indentation, not spaces.</li>
<li>Only change the individual files in <code>/src</code>.</li>
<li>Check that your code will pass <code>eslint</code> code standards, <code>gulp lint</code> will run this for you.</li>
<li>Check that your code will pass tests, <code>gulp test</code> will run tests for you.</li>
<li>Keep pull requests concise, and document new functionality in the relevant <code>.md</code> file.</li>
<li>Consider whether your changes are useful for all users, or if creating a Chart.js <a href="plugins.html">plugin</a> would be more appropriate.</li>
</ul>
<h1 id="joining-the-project">Joining the project</h1>
<p> Active committers and contributors are invited to introduce yourself and request commit access to this project. We have a very active Slack community that you can join <a href="https://chart-js-automation.herokuapp.com/" target="_blank">here</a>. If you think you can help, we'd love to have you!</p>
<h1 id="building-and-testing">Building and Testing</h1>
<p>Chart.js uses <a href="http://gulpjs.com/" target="_blank">gulp</a> to build the library into a single JavaScript file.</p>
<p>Firstly, we need to ensure development dependencies are installed. With node and npm installed, after cloning the Chart.js repo to a local directory, and navigating to that directory in the command line, we can run the following:</p>
<pre><code class="lang-bash">> npm install
> npm install -g gulp
</code></pre>
<p>This will install the local development dependencies for Chart.js, along with a CLI for the JavaScript task runner <a href="http://gulpjs.com/" target="_blank">gulp</a>.</p>
<p>The following commands are now available from the repository root:</p>
<pre><code class="lang-bash">> gulp build // build Chart.js <span class="hljs-keyword">in</span> ./dist
> gulp unittest // run tests from ./<span class="hljs-built_in">test</span>/specs
> gulp unittest --watch // run tests and watch <span class="hljs-keyword">for</span> <span class="hljs-built_in">source</span> changes
> gulp unittest --coverage // run tests and generate coverage reports <span class="hljs-keyword">in</span> ./coverage
> gulp lint // perform code linting (ESLint)
> gulp <span class="hljs-built_in">test</span> // perform code linting and run unit tests
> gulp docs // build the documentation <span class="hljs-keyword">in</span> ./dist/docs
</code></pre>
<p>More information can be found in <a href="https://github.com/chartjs/Chart.js/blob/master/gulpfile.js" target="_blank">gulpfile.js</a>.</p>
<h1 id="bugs-and-issues">Bugs and Issues</h1>
<p>Please report these on the GitHub page - at <a href="https://github.com/chartjs/Chart.js" target="_blank">github.com/chartjs/Chart.js</a>. Please do not use issues for support requests. For help using Chart.js, please take a look at the <a href="http://stackoverflow.com/questions/tagged/chartjs" target="_blank"><code>chartjs</code></a> tag on Stack Overflow.</p>
<p>Well structured, detailed bug reports are hugely valuable for the project.</p>
<p>Guidelines for reporting bugs:</p>
<ul>
<li>Check the issue search to see if it has already been reported</li>
<li>Isolate the problem to a simple test case</li>
<li>Please include a demonstration of the bug on a website such as <a href="http://jsbin.com/" target="_blank">JS Bin</a>, <a href="http://jsfiddle.net/" target="_blank">JS Fiddle</a>, or <a href="http://codepen.io/pen/" target="_blank">Codepen</a>. (<a href="http://codepen.io/pen?template=JXVYzq" target="_blank">Template</a>)</li>
</ul>
<p>Please provide any additional details associated with the bug, if it's browser or screen density specific, or only happens with a certain configuration or data.</p>
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