Xiaoji Chen ea8101796d Updates
2020-11-05 08:35:51 -08:00

113 lines
37 KiB
HTML

<!DOCTYPE html><html><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="ie=edge"/><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/><meta name="generator" content="Gatsby 2.23.11"/><title data-react-helmet="true">react-map-gl | Layer</title><link data-react-helmet="true" rel="stylesheet" href="https://api.tiles.mapbox.com/mapbox-gl-js/v1.6.0/mapbox-gl.css" type="text/css"/><link data-react-helmet="true" rel="stylesheet" href="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-draw/v1.0.9/mapbox-gl-draw.css" type="text/css"/><link data-react-helmet="true" rel="stylesheet" href="/react-map-gl/style.css" type="text/css"/><link data-react-helmet="true" rel="icon" type="img/ico" href="favicon.ico"/><meta data-react-helmet="true" name="description" content="React wrapper for Mapbox GL JS"/><meta data-react-helmet="true" name="image" content="https://github.com/visgl/images/hero-sm.jpg"/><meta data-react-helmet="true" property="og:url" content="https://github.com/visgl/*"/><meta data-react-helmet="true" property="og:type" content="article"/><meta data-react-helmet="true" property="og:title" content="react-map-gl | Layer"/><meta data-react-helmet="true" property="og:description" content="React wrapper for Mapbox GL JS"/><meta data-react-helmet="true" property="og:image" content="https://github.com/visgl/images/hero-sm.jpg"/><meta data-react-helmet="true" property="fb:app_id" content=""/><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"/><meta data-react-helmet="true" name="twitter:creator" content=""/><meta data-react-helmet="true" name="twitter:title" content="react-map-gl | Layer"/><meta data-react-helmet="true" name="twitter:description" content="React wrapper for Mapbox GL JS"/><meta data-react-helmet="true" name="twitter:image" content="https://github.com/visgl/images/hero-sm.jpg"/><script data-react-helmet="true" type="application/ld+json">[{"@context":"http://schema.org","@type":"WebSite","url":"https://github.com/visgl","name":"react-map-gl"},[{"@context":"http://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https://github.com/visgl/*","name":"react-map-gl | Layer","image":"https://github.com/visgl/images/hero-sm.jpg"}}]},{"@context":"http://schema.org","@type":"BlogPosting","url":"https://github.com/visgl","name":"react-map-gl | Layer","headline":"react-map-gl | Layer","image":{"@type":"ImageObject","url":"https://github.com/visgl/images/hero-sm.jpg"},"description":"React wrapper for Mapbox GL JS"}]]</script><script data-react-helmet="true" async="" src="https://www.googletagmanager.com/gtag/js?id=UA-74374017-2"></script><style data-styled="ckjqBY kTxBVF hLObhf jcCSEG bdPEit dkfbFn isdBno ljEIIX cqPqff FcGip FrNRT cowmvG eYbFBV idNLwm iTIrjR dMTgn dvhuEd cncNYa hBeZII bJyOoU egvBsN jYCwIr ePRhQs dNeACf dMoEUD" data-styled-version="4.4.1">
/* sc-component-id: body__BodyContainerToC-lvm4v2-1 */
.idNLwm{height:100%;width:100%;padding:64px 0 0 300px;} @media screen and (max-width:768px){.idNLwm{height:calc(100vh - 64px);padding:0;-webkit-order:2;-ms-flex-order:2;order:2;}}
/* sc-component-id: body__Body-lvm4v2-3 */
.ckjqBY{font:normal 14px/20px UberMove,Helvetica,Arial,sans-serif;width:100vw;height:100vh;}
/* sc-component-id: toc__TocChevron-c2gnov-0 */
.isdBno{height:16px;width:16px;position:absolute;left:24px;top:20px;-webkit-transform:rotate(-90deg);-ms-transform:rotate(-90deg);transform:rotate(-90deg);-webkit-transition:-webkit-transform 0.3s;-webkit-transition:transform 0.3s;transition:transform 0.3s;}.ljEIIX{height:16px;width:16px;position:absolute;left:24px;top:20px;-webkit-transform:none;-ms-transform:none;transform:none;-webkit-transition:-webkit-transform 0.3s;-webkit-transition:transform 0.3s;transition:transform 0.3s;}
/* sc-component-id: toc__TocEntry-c2gnov-1 */
.jcCSEG{font:bold 14px/20px UberMove,Helvetica,Arial,sans-serif;border-top:1px solid tranparent;color:#101918;cursor:pointer;margin:-0.5px 0;position:relative;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;}.bdPEit{font:bold 14px/20px UberMove,Helvetica,Arial,sans-serif;border-top:1px solid tranparent;color:#486865;cursor:pointer;margin:-0.5px 0;position:relative;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;}.dkfbFn{font:bold 14px/20px UberMove,Helvetica,Arial,sans-serif;border-top:1px solid #e1f0ee;color:#101918;cursor:pointer;margin:-0.5px 0;position:relative;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;}
/* sc-component-id: toc__TocHeader-c2gnov-2 */
.cqPqff{display:block;padding:16px 16px 16px 48px;} .cqPqff:hover{background:#f7fcfb;}
/* sc-component-id: toc__TocLink-c2gnov-3 */
.cowmvG a{display:block;padding:16px 16px 16px 60px;color:#486865 !important;-webkit-text-decoration:none;text-decoration:none;} .cowmvG:hover{background:#f7fcfb;}.eYbFBV a{display:block;padding:16px 16px 16px 60px;color:#00ADE6 !important;-webkit-text-decoration:none;text-decoration:none;} .eYbFBV:hover{background:#f7fcfb;}
/* sc-component-id: toc__TocSubpages-c2gnov-4 */
.FcGip{list-style:none;margin:0;max-height:0px;overflow:hidden;padding:0;-webkit-transition:max-height 0.3s;transition:max-height 0.3s;}.FrNRT{list-style:none;margin:0;max-height:1008px;overflow:hidden;padding:0;-webkit-transition:max-height 0.3s;transition:max-height 0.3s;}
/* sc-component-id: toc__TocContainer-c2gnov-5 */
.hLObhf{position:fixed;top:0;padding:64px 0;max-width:300px;height:100%;z-index:2;border-right:1px solid #cae0dc;overflow-y:auto;overflow-x:hidden;width:100%;} @media screen and (max-width:768px){.hLObhf{max-width:100%;height:initial;border-right:none;position:-webkit-sticky;position:sticky;padding:0;-webkit-transition:opacity 0.3s,-webkit-transform 0.3s;-webkit-transition:opacity 0.3s,transform 0.3s;transition:opacity 0.3s,transform 0.3s;opacity:0;max-height:0;overflow:hidden;-webkit-transform:translateY(30px);-ms-transform:translateY(30px);transform:translateY(30px);}}
/* sc-component-id: header__HeaderContainer-sc-3r2dxq-1 */
.kTxBVF{grid-column:1/3;grid-row:1/2;} @media screen and (max-width:768px){.kTxBVF{-webkit-order:1;-ms-flex-order:1;order:1;}}
/* sc-component-id: sc-global-495056895 */
body{margin:0;overflow-x:hidden;} *{box-sizing:border-box;}
/* sc-component-id: typography__A-sc-1pmaksm-0 */
.dvhuEd{-webkit-text-decoration:none;text-decoration:none;color:#00ADE6;} .dvhuEd:visited{color:#174EB6;} .dvhuEd:active{color:#123D90;} .dvhuEd:hover{color:#123D90;}
/* sc-component-id: typography__GatsbyA-sc-1pmaksm-1 */
.dMoEUD{-webkit-text-decoration:none;text-decoration:none;color:#00ADE6;} .dMoEUD:visited{color:#174EB6;} .dMoEUD:active{color:#123D90;} .dMoEUD:hover{color:#123D90;}
/* sc-component-id: typography__H1-sc-1pmaksm-2 */
.dMTgn{font:bold 40px/56px UberMove,Helvetica,Arial,sans-serif;-webkit-letter-spacing:0.02em;-moz-letter-spacing:0.02em;-ms-letter-spacing:0.02em;letter-spacing:0.02em;margin:4px 0 24px;}
/* sc-component-id: typography__H2-sc-1pmaksm-3 */
.jYCwIr{font:bold 32px/48px UberMove,Helvetica,Arial,sans-serif;margin:24px 0 16px;}
/* sc-component-id: typography__H3-sc-1pmaksm-4 */
.ePRhQs{font:bold 24px/36px UberMove,Helvetica,Arial,sans-serif;}
/* sc-component-id: typography__H5-sc-1pmaksm-6 */
.dNeACf{font:bold 16px/24px UberMove,Helvetica,Arial,sans-serif;}
/* sc-component-id: typography__P-sc-1pmaksm-8 */
.cncNYa{margin:'0 0 16px';}
/* sc-component-id: typography__MarkdownBody-sc-1pmaksm-11 */
.iTIrjR{font:normal 14px/20px UberMove,Helvetica,Arial,sans-serif;padding:36px;max-width:692px;}
/* sc-component-id: typography__InlineCode-sc-1pmaksm-12 */
.egvBsN{background-color:#f7fcfb;border-radius:4px;padding:0 5px;font-family:Consolas,Menlo,Monaco,'Andale Mono WT','Andale Mono','Lucida Console','Lucida Sans Typewriter','DejaVu Sans Mono','Bitstream Vera Sans Mono','Liberation Mono','Nimbus Mono L','Courier New',Courier,monospace;font-size:0.9em;margin:1px 0;line-height:calc(1.5em / 0.9 - 2px);display:inline-block;vertical-align:top;}
/* sc-component-id: typography__Pre-sc-1pmaksm-14 */
.bJyOoU{font-size:14px;background-color:#f7fcfb;padding:6px;overflow-x:auto;} .bJyOoU .keyword{color:#339;font-weight:bold;} .bJyOoU .operator{color:#d14;} .bJyOoU .punctuation{color:#458;} .bJyOoU .string,.bJyOoU .number{color:#008080;}
/* sc-component-id: typography__Img-sc-1pmaksm-15 */
.hBeZII{max-width:100%;}</style><style type="text/css">
.anchor.before {
position: absolute;
top: 0;
left: 0;
transform: translateX(-100%);
padding-right: 4px;
}
.anchor.after {
display: inline-block;
padding-left: 4px;
}
h1 .anchor svg,
h2 .anchor svg,
h3 .anchor svg,
h4 .anchor svg,
h5 .anchor svg,
h6 .anchor svg {
visibility: hidden;
}
h1:hover .anchor svg,
h2:hover .anchor svg,
h3:hover .anchor svg,
h4:hover .anchor svg,
h5:hover .anchor svg,
h6:hover .anchor svg,
h1 .anchor:focus svg,
h2 .anchor:focus svg,
h3 .anchor:focus svg,
h4 .anchor:focus svg,
h5 .anchor:focus svg,
h6 .anchor:focus svg {
visibility: visible;
}
</style><script>
document.addEventListener("DOMContentLoaded", function(event) {
var hash = window.decodeURI(location.hash.replace('#', ''))
if (hash !== '') {
var element = document.getElementById(hash)
if (element) {
var scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop
var clientTop = document.documentElement.clientTop || document.body.clientTop || 0
var offset = element.getBoundingClientRect().top + scrollTop - clientTop
// Wait for the browser to finish rendering before scrolling.
setTimeout((function() {
window.scrollTo(0, offset - 64)
}), 0)
}
}
})
</script><link as="script" rel="preload" href="/react-map-gl/webpack-runtime-fd66f76f6d8a7f609893.js"/><link as="script" rel="preload" href="/react-map-gl/framework-b2c0563c3c00c48b175e.js"/><link as="script" rel="preload" href="/react-map-gl/app-44703ef682ee5653bd3d.js"/><link as="script" rel="preload" href="/react-map-gl/6e6a36f4ff8526c60314e9f12b0013febaeb8c38-85b7b919bc6679f9600b.js"/><link as="script" rel="preload" href="/react-map-gl/component---node-modules-gatsby-theme-ocular-src-react-templates-documentation-jsx-1d254b52cdcb78d97270.js"/><link as="fetch" rel="preload" href="/react-map-gl/page-data/docs/api-reference/layer/page-data.json" crossorigin="anonymous"/><link as="fetch" rel="preload" href="/react-map-gl/page-data/app-data.json" crossorigin="anonymous"/></head><body><div id="___gatsby"><div style="outline:none" tabindex="-1" id="gatsby-focus-wrapper"><div><div class="body__Body-lvm4v2-3 ckjqBY"><div class="header__HeaderContainer-sc-3r2dxq-1 kTxBVF"><div></div></div><div class="toc__TocContainer-c2gnov-5 hLObhf"><div><div title="Introduction" class="toc__TocEntry-c2gnov-1 jcCSEG"><svg viewBox="0 0 24 24" class="toc__TocChevron-c2gnov-0 isdBno" width="24" height="24"><title>Chevron Down</title><path transform="rotate(270, 12, 12)" fill-rule="evenodd" clip-rule="evenodd" d="M9 12C9 12.2652 9.10536 12.5196 9.29289 12.7071L13.2929 16.7071C13.6834 17.0976 14.3166 17.0976 14.7071 16.7071C15.0976 16.3166 15.0976 15.6834 14.7071 15.2929L11.4142 12L14.7071 8.70711C15.0976 8.31658 15.0976 7.68342 14.7071 7.29289C14.3166 6.90237 13.6834 6.90237 13.2929 7.29289L9.29289 11.2929C9.10536 11.4804 9 11.7348 9 12Z"></path></svg><span class="toc__TocHeader-c2gnov-2 cqPqff">Introduction</span></div><ul class="toc__TocSubpages-c2gnov-4 FcGip"><div><li><div title="Introduction" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Introduction" href="/react-map-gl/docs">Introduction</a></div></div></li></div><div><li><div title="What&#x27;s new" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="What&#x27;s new" href="/react-map-gl/docs/whats-new">What&#x27;s new</a></div></div></li></div><div><li><div title="Upgrade Guide" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Upgrade Guide" href="/react-map-gl/docs/upgrade-guide">Upgrade Guide</a></div></div></li></div><div><li><div title="Contributing to react-map-gl" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Contributing to react-map-gl" href="/react-map-gl/docs/contributing">Contributing to react-map-gl</a></div></div></li></div></ul></div><div><div title="Getting Started" class="toc__TocEntry-c2gnov-1 dkfbFn"><svg viewBox="0 0 24 24" class="toc__TocChevron-c2gnov-0 isdBno" width="24" height="24"><title>Chevron Down</title><path transform="rotate(270, 12, 12)" fill-rule="evenodd" clip-rule="evenodd" d="M9 12C9 12.2652 9.10536 12.5196 9.29289 12.7071L13.2929 16.7071C13.6834 17.0976 14.3166 17.0976 14.7071 16.7071C15.0976 16.3166 15.0976 15.6834 14.7071 15.2929L11.4142 12L14.7071 8.70711C15.0976 8.31658 15.0976 7.68342 14.7071 7.29289C14.3166 6.90237 13.6834 6.90237 13.2929 7.29289L9.29289 11.2929C9.10536 11.4804 9 11.7348 9 12Z"></path></svg><span class="toc__TocHeader-c2gnov-2 cqPqff">Getting Started</span></div><ul class="toc__TocSubpages-c2gnov-4 FcGip"><div><li><div title="Get Started" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Get Started" href="/react-map-gl/docs/get-started/get-started">Get Started</a></div></div></li></div><div><li><div title="About Mapbox Tokens" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="About Mapbox Tokens" href="/react-map-gl/docs/get-started/mapbox-tokens">About Mapbox Tokens</a></div></div></li></div><div><li><div title="State Management" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="State Management" href="/react-map-gl/docs/get-started/state-management">State Management</a></div></div></li></div><div><li><div title="Adding Custom Data" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Adding Custom Data" href="/react-map-gl/docs/get-started/adding-custom-data">Adding Custom Data</a></div></div></li></div></ul></div><div><div title="Advanced" class="toc__TocEntry-c2gnov-1 dkfbFn"><svg viewBox="0 0 24 24" class="toc__TocChevron-c2gnov-0 isdBno" width="24" height="24"><title>Chevron Down</title><path transform="rotate(270, 12, 12)" fill-rule="evenodd" clip-rule="evenodd" d="M9 12C9 12.2652 9.10536 12.5196 9.29289 12.7071L13.2929 16.7071C13.6834 17.0976 14.3166 17.0976 14.7071 16.7071C15.0976 16.3166 15.0976 15.6834 14.7071 15.2929L11.4142 12L14.7071 8.70711C15.0976 8.31658 15.0976 7.68342 14.7071 7.29289C14.3166 6.90237 13.6834 6.90237 13.2929 7.29289L9.29289 11.2929C9.10536 11.4804 9 11.7348 9 12Z"></path></svg><span class="toc__TocHeader-c2gnov-2 cqPqff">Advanced</span></div><ul class="toc__TocSubpages-c2gnov-4 FcGip"><div><li><div title="Custom Components" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Custom Components" href="/react-map-gl/docs/advanced/custom-components">Custom Components</a></div></div></li></div><div><li><div title="Custom Map Controller" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Custom Map Controller" href="/react-map-gl/docs/advanced/custom-map-controller">Custom Map Controller</a></div></div></li></div><div><li><div title="Custom Overlays" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Custom Overlays" href="/react-map-gl/docs/advanced/custom-overlays">Custom Overlays</a></div></div></li></div><div><li><div title="Viewport Transition" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Viewport Transition" href="/react-map-gl/docs/advanced/viewport-transition">Viewport Transition</a></div></div></li></div></ul></div><div><div title="API Reference" class="toc__TocEntry-c2gnov-1 dkfbFn"><svg viewBox="0 0 24 24" class="toc__TocChevron-c2gnov-0 ljEIIX" width="24" height="24"><title>Chevron Down</title><path transform="rotate(270, 12, 12)" fill-rule="evenodd" clip-rule="evenodd" d="M9 12C9 12.2652 9.10536 12.5196 9.29289 12.7071L13.2929 16.7071C13.6834 17.0976 14.3166 17.0976 14.7071 16.7071C15.0976 16.3166 15.0976 15.6834 14.7071 15.2929L11.4142 12L14.7071 8.70711C15.0976 8.31658 15.0976 7.68342 14.7071 7.29289C14.3166 6.90237 13.6834 6.90237 13.2929 7.29289L9.29289 11.2929C9.10536 11.4804 9 11.7348 9 12Z"></path></svg><span class="toc__TocHeader-c2gnov-2 cqPqff">API Reference</span></div><ul class="toc__TocSubpages-c2gnov-4 FrNRT"><div><li><div title="Canvas Overlay" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Canvas Overlay" href="/react-map-gl/docs/api-reference/canvas-overlay">Canvas Overlay</a></div></div></li></div><div><li><div title="FlyToInterpolator" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="FlyToInterpolator" href="/react-map-gl/docs/api-reference/fly-to-interpolator">FlyToInterpolator</a></div></div></li></div><div><li><div title="HTML Overlay" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="HTML Overlay" href="/react-map-gl/docs/api-reference/html-overlay">HTML Overlay</a></div></div></li></div><div><li><div title="InteractiveMap" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="InteractiveMap" href="/react-map-gl/docs/api-reference/interactive-map">InteractiveMap</a></div></div></li></div><div><li><div title="Layer" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 eYbFBV"><a aria-current="page" title="Layer" class="" href="/react-map-gl/docs/api-reference/layer">Layer</a></div></div></li></div><div><li><div title="LinearInterpolator" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="LinearInterpolator" href="/react-map-gl/docs/api-reference/linear-interpolator">LinearInterpolator</a></div></div></li></div><div><li><div title="Marker Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Marker Control" href="/react-map-gl/docs/api-reference/marker">Marker Control</a></div></div></li></div><div><li><div title="MapController" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="MapController" href="/react-map-gl/docs/api-reference/map-controller">MapController</a></div></div></li></div><div><li><div title="Navigation Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Navigation Control" href="/react-map-gl/docs/api-reference/navigation-control">Navigation Control</a></div></div></li></div><div><li><div title="Fullscreen Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Fullscreen Control" href="/react-map-gl/docs/api-reference/fullscreen-control">Fullscreen Control</a></div></div></li></div><div><li><div title="Geolocate Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Geolocate Control" href="/react-map-gl/docs/api-reference/geolocate-control">Geolocate Control</a></div></div></li></div><div><li><div title="PointerEvent" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="PointerEvent" href="/react-map-gl/docs/api-reference/pointer-event">PointerEvent</a></div></div></li></div><div><li><div title="Popup Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Popup Control" href="/react-map-gl/docs/api-reference/popup">Popup Control</a></div></div></li></div><div><li><div title="Scale Control" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Scale Control" href="/react-map-gl/docs/api-reference/scale-control">Scale Control</a></div></div></li></div><div><li><div title="Source" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="Source" href="/react-map-gl/docs/api-reference/source">Source</a></div></div></li></div><div><li><div title="StaticMap" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="StaticMap" href="/react-map-gl/docs/api-reference/static-map">StaticMap</a></div></div></li></div><div><li><div title="SVG Overlay" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="SVG Overlay" href="/react-map-gl/docs/api-reference/svg-overlay">SVG Overlay</a></div></div></li></div><div><li><div title="WebMercatorViewport" class="toc__TocEntry-c2gnov-1 bdPEit"><div class="toc__TocLink-c2gnov-3 cowmvG"><a title="WebMercatorViewport" href="/react-map-gl/docs/api-reference/web-mercator-viewport">WebMercatorViewport</a></div></div></li></div></ul></div></div><div class="body__BodyContainerToC-lvm4v2-1 idNLwm"><div style="position:relative"><div class="typography__MarkdownBody-sc-1pmaksm-11 iTIrjR"><h1 id="layer" style="position:relative" class="typography__H1-sc-1pmaksm-2 dMTgn"><a href="#layer" aria-label="layer permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Layer</h1><p class="typography__P-sc-1pmaksm-8 cncNYa"><img src="https://img.shields.io/badge/since-v5.1-green" alt="Since v5.1" class="typography__Img-sc-1pmaksm-15 hBeZII"/></p><p class="typography__P-sc-1pmaksm-8 cncNYa">This component allows apps to create a <a href="https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers" class="typography__A-sc-1pmaksm-0 dvhuEd">map layer</a> using React.</p><div class="gatsby-highlight" data-language="js"><pre class="typography__Pre-sc-1pmaksm-14 bJyOoU language-js"><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-js"><span class="token keyword">import</span> <span class="token operator">*</span> <span class="token keyword">as</span> React <span class="token keyword">from</span> <span class="token string">&#x27;react&#x27;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> ReactMapGL<span class="token punctuation">,</span> <span class="token punctuation">{</span>Layer<span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&#x27;react-map-gl&#x27;</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> parkLayer <span class="token operator">=</span> <span class="token punctuation">{</span>
id<span class="token operator">:</span> <span class="token string">&#x27;landuse_park&#x27;</span><span class="token punctuation">,</span>
type<span class="token operator">:</span> <span class="token string">&#x27;fill&#x27;</span><span class="token punctuation">,</span>
source<span class="token operator">:</span> <span class="token string">&#x27;mapbox&#x27;</span><span class="token punctuation">,</span>
<span class="token string">&#x27;source-layer&#x27;</span><span class="token operator">:</span> <span class="token string">&#x27;landuse&#x27;</span><span class="token punctuation">,</span>
filter<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token string">&#x27;==&#x27;</span><span class="token punctuation">,</span> <span class="token string">&#x27;class&#x27;</span><span class="token punctuation">,</span> <span class="token string">&#x27;park&#x27;</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token keyword">class</span> <span class="token class-name">Map</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
<span class="token function">render</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> <span class="token punctuation">{</span>parkColor <span class="token operator">=</span> <span class="token string">&#x27;#dea&#x27;</span><span class="token punctuation">}</span> <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>props<span class="token punctuation">;</span>
<span class="token keyword">return</span> <span class="token punctuation">(</span>
<span class="token operator">&lt;</span>ReactMapGL latitude<span class="token operator">=</span><span class="token punctuation">{</span><span class="token number">37.78</span><span class="token punctuation">}</span> longitude<span class="token operator">=</span><span class="token punctuation">{</span><span class="token operator">-</span><span class="token number">122.41</span><span class="token punctuation">}</span> zoom<span class="token operator">=</span><span class="token punctuation">{</span><span class="token number">8</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
<span class="token operator">&lt;</span>Layer <span class="token punctuation">{</span><span class="token operator">...</span>parkLayer<span class="token punctuation">}</span> paint<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span><span class="token string">&#x27;fill-color&#x27;</span><span class="token operator">:</span> parkColor<span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">&gt;</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>ReactMapGL<span class="token operator">&gt;</span>
<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span></code></pre></div><h2 style="position:relative" id="properties" class="typography__H2-sc-1pmaksm-3 jYCwIr"><a href="#properties" aria-label="properties permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Properties</h2><p class="typography__P-sc-1pmaksm-8 cncNYa">The props provided to this component should be conforming to the <a href="https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers" class="typography__A-sc-1pmaksm-0 dvhuEd">Mapbox layer specification</a>.</p><p class="typography__P-sc-1pmaksm-8 cncNYa">When props change <em>shallowly</em>, the component will perform style diffing to update the layer. Avoid defining constant objects/arrays inline may help performance.</p><h3 style="position:relative" id="identity-properties" class="typography__H3-sc-1pmaksm-4 ePRhQs"><a href="#identity-properties" aria-label="identity properties permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Identity Properties</h3><p class="typography__P-sc-1pmaksm-8 cncNYa">Once a <code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">&lt;Layer&gt;</code> is mounted, the following props should not change. If you add/remove multiple JSX layers dynamically, make sure you use React&#x27;s <a href="https://reactjs.org/docs/lists-and-keys.html#keys" class="typography__A-sc-1pmaksm-0 dvhuEd">key prop</a> to give each element a stable identity.</p><h5 style="position:relative" id="id" class="typography__H5-sc-1pmaksm-6 dNeACf"><a href="#id" aria-label="code classlanguage textidcode string permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">id</code> (String)</h5><p class="typography__P-sc-1pmaksm-8 cncNYa">Unique identifier of the layer. If not provided, a default id will be assigned.</p><h5 style="position:relative" id="type" class="typography__H5-sc-1pmaksm-6 dNeACf"><a href="#type" aria-label="code classlanguage texttypecode string required permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">type</code> (String, required)</h5><p class="typography__P-sc-1pmaksm-8 cncNYa">Type of the layer.</p><h3 style="position:relative" id="options" class="typography__H3-sc-1pmaksm-4 ePRhQs"><a href="#options" aria-label="options permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Options</h3><h5 style="position:relative" id="beforeid" class="typography__H5-sc-1pmaksm-6 dNeACf"><a href="#beforeid" aria-label="code classlanguage textbeforeidcode string permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">beforeId</code> (String)</h5><p class="typography__P-sc-1pmaksm-8 cncNYa">The ID of an existing layer to insert this layer before. If this prop is omitted, the layer will be appended to the end of the layers array. This is useful when using dynamic layers with a map style from a URL.</p><p class="typography__P-sc-1pmaksm-8 cncNYa">Note that layers are added by the order that they mount. They are <em>NOT</em> reordered later if their relative positions in the JSX tree change. If dynamic reordering is desired, you should manipulate <code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">beforeId</code> for consistent behavior.</p><h5 style="position:relative" id="source" class="typography__H5-sc-1pmaksm-6 dNeACf"><a href="#source" aria-label="code classlanguage textsourcecode string permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">source</code> (String)</h5><p class="typography__P-sc-1pmaksm-8 cncNYa"><code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">source</code> is required by some layer types in the Mapbox style specification. If <code class="typography__InlineCode-sc-1pmaksm-12 egvBsN language-text">&lt;Layer&gt;</code> is used as the child of a <a class="typography__GatsbyA-sc-1pmaksm-1 dMoEUD" href="/react-map-gl/docs/api-reference/source">Source</a> component, this prop will be overwritten by the id of the parent source.</p><h2 style="position:relative" id="source-1" class="typography__H2-sc-1pmaksm-3 jYCwIr"><a href="#source-1" aria-label="source permalink" class="typography__A-sc-1pmaksm-0 dvhuEd anchor before"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Source</h2><p class="typography__P-sc-1pmaksm-8 cncNYa"><a href="https://github.com/visgl/react-map-gl/tree/5.2-release/src/components/layer.js" class="typography__A-sc-1pmaksm-0 dvhuEd">layer.js</a></p></div></div></div></div></div></div><div id="gatsby-announcer" style="position:absolute;top:0;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;border:0" aria-live="assertive" aria-atomic="true"></div></div><script id="gatsby-script-loader">/*<![CDATA[*/window.pagePath="/docs/api-reference/layer";/*]]>*/</script><script id="gatsby-chunk-mapping">/*<![CDATA[*/window.___chunkMapping={"app":["/app-44703ef682ee5653bd3d.js"],"component---examples-clusters-src-app-js":["/component---examples-clusters-src-app-js-4b4feb872881c1ef8955.js"],"component---examples-controls-src-app-js":["/component---examples-controls-src-app-js-aec44a1b45f26de31e94.js"],"component---examples-custom-cursor-src-app-js":["/component---examples-custom-cursor-src-app-js-904a309f784453765482.js"],"component---examples-draggable-markers-src-app-js":["/component---examples-draggable-markers-src-app-js-21e2d603cb3ac232d2e4.js"],"component---examples-draw-polygon-src-app-js":["/component---examples-draw-polygon-src-app-js-f6ede049c83a0e67f4e1.js"],"component---examples-filter-src-app-js":["/component---examples-filter-src-app-js-d7dfb0e8c7be529ce6e1.js"],"component---examples-geojson-animation-src-app-js":["/component---examples-geojson-animation-src-app-js-26285cc46325a76396ab.js"],"component---examples-geojson-src-app-js":["/component---examples-geojson-src-app-js-8e8bac2d6a94cd038588.js"],"component---examples-heatmap-src-app-js":["/component---examples-heatmap-src-app-js-92f63669fa0f739c2d31.js"],"component---examples-interaction-src-app-js":["/component---examples-interaction-src-app-js-055bced5fc37b8a59966.js"],"component---examples-layers-src-app-js":["/component---examples-layers-src-app-js-1cc072142257f61158d1.js"],"component---examples-locate-user-src-app-js":["/component---examples-locate-user-src-app-js-af658bb355c0ccf18035.js"],"component---examples-viewport-animation-src-app-js":["/component---examples-viewport-animation-src-app-js-e5fc15a914f28d3d8c4b.js"],"component---examples-zoom-to-bounds-src-app-js":["/component---examples-zoom-to-bounds-src-app-js-b7767b3d39a2b681e0ae.js"],"component---node-modules-gatsby-theme-ocular-src-react-templates-documentation-jsx":["/component---node-modules-gatsby-theme-ocular-src-react-templates-documentation-jsx-1d254b52cdcb78d97270.js"],"component---node-modules-gatsby-theme-ocular-src-react-templates-examples-jsx":["/component---node-modules-gatsby-theme-ocular-src-react-templates-examples-jsx-1e161f9befa7a5e93282.js"],"component---node-modules-gatsby-theme-ocular-src-react-templates-search-jsx":["/component---node-modules-gatsby-theme-ocular-src-react-templates-search-jsx-d8782acebb3a2dec74ab.js"],"component---src-home-js":["/component---src-home-js-485c146aced5983b2e71.js"]};/*]]>*/</script><script src="/react-map-gl/component---node-modules-gatsby-theme-ocular-src-react-templates-documentation-jsx-1d254b52cdcb78d97270.js" async=""></script><script src="/react-map-gl/6e6a36f4ff8526c60314e9f12b0013febaeb8c38-85b7b919bc6679f9600b.js" async=""></script><script src="/react-map-gl/app-44703ef682ee5653bd3d.js" async=""></script><script src="/react-map-gl/framework-b2c0563c3c00c48b175e.js" async=""></script><script src="/react-map-gl/webpack-runtime-fd66f76f6d8a7f609893.js" async=""></script></body></html>