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1147 lines
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Interactions
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Events
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Modes
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Options
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Colors
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Fonts
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Configuration
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Animations
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Layout
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Legend
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Title
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Tooltip
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</a>
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<li class="chapter " data-level="1.4.6" data-path="../../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="../../charts/">
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<a href="../../charts/">
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Charts
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<ul class="articles">
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<li class="chapter " data-level="1.5.1" data-path="../../charts/line.html">
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<a href="../../charts/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="../../charts/bar.html">
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<a href="../../charts/bar.html">
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Bar
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</a>
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<li class="chapter " data-level="1.5.3" data-path="../../charts/radar.html">
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<a href="../../charts/radar.html">
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Radar
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</a>
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</li>
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<li class="chapter " data-level="1.5.4" data-path="../../charts/doughnut.html">
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<a href="../../charts/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="../../charts/polar.html">
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<a href="../../charts/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 " data-level="1.5.6" data-path="../../charts/bubble.html">
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<a href="../../charts/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="../../charts/scatter.html">
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<a href="../../charts/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="../../charts/area.html">
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<a href="../../charts/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="../../charts/mixed.html">
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<a href="../../charts/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="../">
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<a href="../">
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Axes
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</a>
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<ul class="articles">
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<li class="chapter active" data-level="1.6.1" data-path="./">
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<a href="./">
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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="category.html">
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<a href="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="linear.html">
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<a href="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="logarithmic.html">
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<a href="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="time.html">
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<a href="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="../radial/">
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<a href="../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="../radial/linear.html">
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<a href="../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="../labelling.html">
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<a href="../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="../styling.html">
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<a href="../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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<!-- 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="../.." >Cartesian</a>
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<section class="normal markdown-section">
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<h1 id="cartesian-axes">Cartesian Axes</h1>
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<p>Axes that follow a cartesian grid are known as 'Cartesian Axes'. Cartesian axes are used for line, bar, and bubble charts. Four cartesian axes are included in Chart.js by default.</p>
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<ul>
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<li><a href="linear.html#linear-cartesian-axis">linear</a></li>
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<li><a href="logarithmic.html#logarithmic-cartesian-axis">logarithmic</a></li>
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<li><a href="category.html#category-cartesian-axis">category</a></li>
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<li><a href="time.html#time-cartesian-axis">time</a></li>
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</ul>
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<h1 id="common-configuration">Common Configuration</h1>
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<p>All of the included cartesian axes support a number of common options.</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>Default</th>
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<th>Description</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><code>type</code></td>
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<td><code>String</code></td>
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<td></td>
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<td>Type of scale being employed. Custom scales can be created and registered with a string key. This allows changing the type of an axis for a chart.</td>
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</tr>
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<tr>
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<td><code>position</code></td>
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<td><code>String</code></td>
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<td></td>
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<td>Position of the axis in the chart. Possible values are: <code>'top'</code>, <code>'left'</code>, <code>'bottom'</code>, <code>'right'</code></td>
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</tr>
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<tr>
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<td><code>offset</code></td>
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<td><code>Boolean</code></td>
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<td><code>false</code></td>
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<td>If true, extra space is added to the both edges and the axis is scaled to fit into the chart area. This is set to <code>true</code> in the bar chart by default.</td>
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</tr>
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<tr>
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<td><code>id</code></td>
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<td><code>String</code></td>
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<td></td>
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<td>The ID is used to link datasets and scale axes together. <a href="#axis-id">more...</a></td>
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</tr>
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<tr>
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<td><code>gridLines</code></td>
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<td><code>Object</code></td>
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<td></td>
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<td>Grid line configuration. <a href="../styling.html#grid-line-configuration">more...</a></td>
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</tr>
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<tr>
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<td><code>scaleLabel</code></td>
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<td><code>Object</code></td>
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<td></td>
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<td>Scale title configuration. <a href="../labelling.html#scale-title-configuration">more...</a></td>
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</tr>
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<tr>
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<td><code>ticks</code></td>
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<td><code>Object</code></td>
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<td></td>
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<td>Tick configuration. <a href="#tick-configuration">more...</a></td>
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</tr>
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</tbody>
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</table>
|
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<h2 id="tick-configuration">Tick Configuration</h2>
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<p>The following options are common to all cartesian axes but do not apply to other axes.</p>
|
|
<table>
|
|
<thead>
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|
<tr>
|
|
<th>Name</th>
|
|
<th>Type</th>
|
|
<th>Default</th>
|
|
<th>Description</th>
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</tr>
|
|
</thead>
|
|
<tbody>
|
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<tr>
|
|
<td><code>autoSkip</code></td>
|
|
<td><code>Boolean</code></td>
|
|
<td><code>true</code></td>
|
|
<td>If true, automatically calculates how many labels that can be shown and hides labels accordingly. Turn it off to show all labels no matter what</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>autoSkipPadding</code></td>
|
|
<td><code>Number</code></td>
|
|
<td><code>0</code></td>
|
|
<td>Padding between the ticks on the horizontal axis when <code>autoSkip</code> is enabled. <em>Note: Only applicable to horizontal scales.</em></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>labelOffset</code></td>
|
|
<td><code>Number</code></td>
|
|
<td><code>0</code></td>
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|
<td>Distance in pixels to offset the label from the centre point of the tick (in the y direction for the x axis, and the x direction for the y axis). <em>Note: this can cause labels at the edges to be cropped by the edge of the canvas</em></td>
|
|
</tr>
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|
<tr>
|
|
<td><code>maxRotation</code></td>
|
|
<td><code>Number</code></td>
|
|
<td><code>90</code></td>
|
|
<td>Maximum rotation for tick labels when rotating to condense labels. Note: Rotation doesn't occur until necessary. <em>Note: Only applicable to horizontal scales.</em></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>minRotation</code></td>
|
|
<td><code>Number</code></td>
|
|
<td><code>0</code></td>
|
|
<td>Minimum rotation for tick labels. <em>Note: Only applicable to horizontal scales.</em></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>mirror</code></td>
|
|
<td><code>Boolean</code></td>
|
|
<td><code>false</code></td>
|
|
<td>Flips tick labels around axis, displaying the labels inside the chart instead of outside. <em>Note: Only applicable to vertical scales.</em></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>padding</code></td>
|
|
<td><code>Number</code></td>
|
|
<td><code>10</code></td>
|
|
<td>Padding between the tick label and the axis. When set on a vertical axis, this applies in the horizontal (X) direction. When set on a horizontal axis, this applies in the vertical (Y) direction.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h2 id="axis-id">Axis ID</h2>
|
|
<p>The properties <code>dataset.xAxisID</code> or <code>dataset.yAxisID</code> have to match the scale properties <code>scales.xAxes.id</code> or <code>scales.yAxes.id</code>. This is especially needed if multi-axes charts are used.</p>
|
|
<pre><code class="lang-javascript"><span class="hljs-keyword">var</span> myChart = <span class="hljs-keyword">new</span> Chart(ctx, {
|
|
type: <span class="hljs-string">'line'</span>,
|
|
data: {
|
|
datasets: [{
|
|
<span class="hljs-comment">// This dataset appears on the first axis</span>
|
|
yAxisID: <span class="hljs-string">'first-y-axis'</span>
|
|
}, {
|
|
<span class="hljs-comment">// This dataset appears on the second axis</span>
|
|
yAxisID: <span class="hljs-string">'second-y-axis'</span>
|
|
}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
yAxes: [{
|
|
id: <span class="hljs-string">'first-y-axis'</span>,
|
|
type: <span class="hljs-string">'linear'</span>
|
|
}, {
|
|
id: <span class="hljs-string">'second-y-axis'</span>,
|
|
type: <span class="hljs-string">'linear'</span>
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
</code></pre>
|
|
<h1 id="creating-multiple-axes">Creating Multiple Axes</h1>
|
|
<p>With cartesian axes, it is possible to create multiple X and Y axes. To do so, you can add multiple configuration objects to the <code>xAxes</code> and <code>yAxes</code> properties. When adding new axes, it is important to ensure that you specify the type of the new axes as default types are <strong>not</strong> used in this case.</p>
|
|
<p>In the example below, we are creating two Y axes. We then use the <code>yAxisID</code> property to map the datasets to their correct axes.</p>
|
|
<pre><code class="lang-javascript"><span class="hljs-keyword">var</span> myChart = <span class="hljs-keyword">new</span> Chart(ctx, {
|
|
type: <span class="hljs-string">'line'</span>,
|
|
data: {
|
|
datasets: [{
|
|
data: [<span class="hljs-number">20</span>, <span class="hljs-number">50</span>, <span class="hljs-number">100</span>, <span class="hljs-number">75</span>, <span class="hljs-number">25</span>, <span class="hljs-number">0</span>],
|
|
label: <span class="hljs-string">'Left dataset'</span>,
|
|
|
|
<span class="hljs-comment">// This binds the dataset to the left y axis</span>
|
|
yAxisID: <span class="hljs-string">'left-y-axis'</span>
|
|
}, {
|
|
data: [<span class="hljs-number">0.1</span>, <span class="hljs-number">0.5</span>, <span class="hljs-number">1.0</span>, <span class="hljs-number">2.0</span>, <span class="hljs-number">1.5</span>, <span class="hljs-number">0</span>],
|
|
label: <span class="hljs-string">'Right dataset'</span>,
|
|
|
|
<span class="hljs-comment">// This binds the dataset to the right y axis</span>
|
|
yAxisID: <span class="hljs-string">'right-y-axis'</span>,
|
|
}],
|
|
labels: [<span class="hljs-string">'Jan'</span>, <span class="hljs-string">'Feb'</span>, <span class="hljs-string">'Mar'</span>, <span class="hljs-string">'Apr'</span>, <span class="hljs-string">'May'</span>, <span class="hljs-string">'Jun'</span>]
|
|
},
|
|
options: {
|
|
scales: {
|
|
yAxes: [{
|
|
id: <span class="hljs-string">'left-y-axis'</span>,
|
|
type: <span class="hljs-string">'linear'</span>,
|
|
position: <span class="hljs-string">'left'</span>
|
|
}, {
|
|
id: <span class="hljs-string">'right-y-axis'</span>,
|
|
type: <span class="hljs-string">'linear'</span>,
|
|
position: <span class="hljs-string">'right'</span>
|
|
}]
|
|
}
|
|
}
|
|
});
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</code></pre>
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