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class="breadcrumbs__item">Layers<meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active">H3HexagonLayer<meta itemprop="position" content="3"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>H3HexagonLayer</h1><div class="demo-base__DemoPlaceholder-sc-bhdrci-0 djecNU"><div class="demo-base__DemoContainer-sc-bhdrci-1 jGCMrh"><div id="deckgl-wrapper" style="position:absolute;z-index:0;left:0;top:0;width:100%;height:100%"><canvas id="deckgl-overlay" style="left:0;top:0"></canvas></div></div><div class="demo-base__DemoSourceLink-sc-bhdrci-2 ciZnDn"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M0 0h24v24H0V0z" fill="none"></path><path fill="currentcolor" d="M9.4 16.6L4.8 12l4.6-4.6L8 6l-6 6 6 6 1.4-1.4zm5.2 0l4.6-4.6-4.6-4.6L16 6l6 6-6 6-1.4-1.4z"></path></svg>Edit on Codepen</div></div>The <code>H3HexagonLayer</code> renders hexagons from the <a href="https://h3geo.org/" target="_blank" rel="noopener noreferrer">H3</a> geospatial indexing system.<code>H3HexagonLayer</code> is a <a href="/docs/api-reference/core/composite-layer">CompositeLayer</a>.<div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">JavaScript</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">TypeScript</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">React</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">import {Deck} from '@deck.gl/core'; import {H3HexagonLayer} from '@deck.gl/geo-layers'; const layer = new H3HexagonLayer({ id: 'H3HexagonLayer', data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.h3cells.json', extruded: true, getHexagon: d => d.hex, getFillColor: d => [255, (1 - d.count / 500) * 255, 0], getElevation: d => d.count, elevationScale: 20, pickable: true }); new Deck({ initialViewState: { longitude: -122.4, latitude: 37.74, zoom: 11 }, controller: true, getTooltip: ({object}) => object && `${object.hex} count: ${object.count}`, layers: [layer] }); </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">import {Deck, PickingInfo} from '@deck.gl/core'; import {H3HexagonLayer} from '@deck.gl/geo-layers'; type DataType = { hex: string; count: number; }; const layer = new H3HexagonLayer<DataType>({ id: 'H3HexagonLayer', data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.h3cells.json', extruded: true, getHexagon: (d: DataType) => d.hex, getFillColor: (d: DataType) => [255, (1 - d.count / 500) * 255, 0], getElevation: (d: DataType) => d.count, elevationScale: 20, pickable: true }); new Deck({ initialViewState: { longitude: -122.4, latitude: 37.74, zoom: 11 }, controller: true, getTooltip: ({object}: PickingInfo<DataType>) => object && `${object.hex} count: ${object.count}`, layers: [layer] }); </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="language-tsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-tsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">import React from 'react'; import DeckGL from '@deck.gl/react'; import {H3HexagonLayer} from '@deck.gl/geo-layers'; import type {PickingInfo} from '@deck.gl/core'; type DataType = { hex: string; count: number; }; function App() { const layer = new H3HexagonLayer<DataType>({ id: 'H3HexagonLayer', data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.h3cells.json', extruded: true, getHexagon: (d: DataType) => d.hex, getFillColor: (d: DataType) => [255, (1 - d.count / 500) * 255, 0], getElevation: (d: DataType) => d.count, elevationScale: 20, pickable: true }); return <DeckGL initialViewState={{ longitude: -122.4, latitude: 37.74, zoom: 11 }} controller getTooltip={({object}: PickingInfo<DataType>) => object && `${object.hex} count: ${object.count}`} layers={[layer]} />; } </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="installation">Installation<a href="#installation" class="hash-link" aria-label="Direct link to Installation" title="Direct link to Installation"></a></h2>To install the dependencies from NPM:<div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">npm install deck.gl # or npm install @deck.gl/core @deck.gl/layers @deck.gl/geo-layers </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div><div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">import {H3HexagonLayer} from '@deck.gl/geo-layers'; import type {H3HexagonLayerProps} from '@deck.gl/geo-layers'; new H3HexagonLayer<DataT>(...props: H3HexagonLayerProps<DataT>[]); </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div>To use pre-bundled scripts:<div class="language-html codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-html codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><script src="https://unpkg.com/h3-js@^4.0.0"></script> <script src="https://unpkg.com/deck.gl@^9.0.0/dist.min.js"></script>  <script src="https://unpkg.com/@deck.gl/core@^9.0.0/dist.min.js"></script> <script src="https://unpkg.com/@deck.gl/layers@^9.0.0/dist.min.js"></script> <script src="https://unpkg.com/@deck.gl/geo-layers@^9.0.0/dist.min.js"></script> </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#403f53;--prism-background-color:#FBFBFB"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv">new deck.H3HexagonLayer({}); </code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></button></div></div></div>Note that <code>h3-js</code> must be included before <code>deck.gl</code>.<h2 class="anchor anchorWithStickyNavbar_LWe7" id="properties">Properties<a href="#properties" class="hash-link" aria-label="Direct link to Properties" title="Direct link to Properties"></a></h2>Inherits from all <a href="/docs/api-reference/core/layer">Base Layer</a>, <a href="/docs/api-reference/core/composite-layer">CompositeLayer</a>, and <a href="/docs/api-reference/layers/polygon-layer">PolygonLayer</a> properties, plus the following:<h3 class="anchor anchorWithStickyNavbar_LWe7" id="render-options">Render Options<a href="#render-options" class="hash-link" aria-label="Direct link to Render Options" title="Direct link to Render Options"></a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="highprecision"><code>highPrecision</code> (boolean, optional)<a href="#highprecision" class="hash-link" aria-label="Direct link to highprecision" title="Direct link to highprecision"></a></h4><ul><li>Default: <code>'auto'</code></li></ul>Each hexagon in the H3 indexing system is <a href="https://h3geo.org/docs/core-library/coordsystems" target="_blank" rel="noopener noreferrer">slightly different in shape</a>. To draw a large number of hexagons efficiently, the <code>H3HexagonLayer</code> may choose to use instanced drawing by assuming that all hexagons within the current viewport have the same shape as the one at the center of the current viewport. The discrepancy is usually too small to be visible.There are several cases in which high-precision mode is required. In these cases, <code>H3HexagonLayer</code> may choose to switch to high-precision mode, where it trades performance for accuracy:<ul><li>The input set contains a pentagon. There are 12 pentagons world wide at each resolution, and these cells and their immediate neighbors have significant differences in shape.</li><li>The input set is at a coarse resolution (res <code>0</code> through res <code>5</code>). These cells have larger differences in shape, particularly when using a Mercator projection.</li><li>The input set contains hexagons with different resolutions.</li></ul>Possible values:<ul><li><code>'auto'</code>: The layer chooses the mode automatically. High-precision rendering is only used if an edge case is encountered in the data.</li><li><code>true</code>: Always use high-precision rendering.</li><li><code>false</code>: Always use instanced rendering, regardless of the characteristics of the data.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="coverage"><code>coverage</code> (number, optional) <img loading="lazy" src="https://img.shields.io/badge/transition-enabled-green.svg?style=flat-square%22" alt="transition-enabled" class="img_ev3q"><a href="#coverage" class="hash-link" aria-label="Direct link to coverage" title="Direct link to coverage"></a></h4><ul><li>Default: <code>1</code></li></ul>Hexagon radius multiplier, between 0 - 1. When <code>coverage</code> = 1, hexagon is rendered with actual size, by specifying a different value (between 0 and 1) hexagon can be scaled down.<h3 class="anchor anchorWithStickyNavbar_LWe7" id="data-accessors">Data Accessors<a href="#data-accessors" class="hash-link" aria-label="Direct link to Data Accessors" title="Direct link to Data Accessors"></a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gethexagon"><code>getHexagon</code> (<a href="/docs/developer-guide/using-layers#accessors">Accessor<string></a>, optional)<a href="#gethexagon" class="hash-link" aria-label="Direct link to gethexagon" title="Direct link to gethexagon"></a></h4><ul><li>Default: <code>object => object.hexagon</code></li></ul>Method called to retrieve the <a href="https://h3geo.org/" target="_blank" rel="noopener noreferrer">H3</a> hexagon index of each object. Note that all hexagons within one <code>H3HexagonLayer</code> must use the same <a href="https://h3geo.org/docs/core-library/restable" target="_blank" rel="noopener noreferrer">resolution</a>.<h2 class="anchor anchorWithStickyNavbar_LWe7" id="sub-layers">Sub Layers<a href="#sub-layers" class="hash-link" aria-label="Direct link to Sub Layers" title="Direct link to Sub Layers"></a></h2>The <code>H3HexagonLayer</code> renders the following sublayers:<ul><li><code>hexagon-cell-hifi</code> - On <code>highPrecision</code> mode, rendered by <a href="/docs/api-reference/layers/solid-polygon-layer">SolidPolygonLayer</a></li><li><code>hexagon-cell</code> - On non <code>highPrecision</code> mode, rendered by <a href="/docs/api-reference/layers/column-layer">ColumnLayer</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="source">Source<a href="#source" class="hash-link" aria-label="Direct link to Source" title="Direct link to Source"></a></h2><a href="https://github.com/visgl/deck.gl/tree/9.0-release/modules/geo-layers/src/h3-layers/h3-hexagon-layer.ts" target="_blank" rel="noopener noreferrer">modules/geo-layers/src/h3-layers/h3-hexagon-layer.ts</a></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/visgl/deck.gl/tree/master/website/../docs/api-reference/geo-layers/h3-hexagon-layer.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link 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