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515 lines
24 KiB
HTML
515 lines
24 KiB
HTML
<!DOCTYPE html>
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window.cookieconsent.initialise({
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" type="text/css">
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" type="text/css">
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<link rel="stylesheet" href="./resources/prism/prism-1.20.0.css" type="text/css">
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<link rel="stylesheet" href="./css/ol.css" type="text/css">
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<link rel="stylesheet" href="./resources/layout.css" type="text/css">
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<script src="https://unpkg.com/elm-pep"></script>
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<script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL,TextDecoder"></script>
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<title>Reprojection with EPSG.io Search</title>
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</head>
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<body>
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<header class="navbar navbar-expand-sm navbar-dark mb-3 py-0" role="navigation">
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<a class="navbar-brand" href="https://openlayers.org/"><img src="./resources/logo-70x70.png" alt=""> OpenLayers</a>
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<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#olmenu" aria-controls="olmenu" aria-expanded="false" aria-label="Toggle navigation">
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<a class="dropdown-item" href="../doc/">Docs</a>
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<a class="dropdown-item" href="../doc/quickstart.html"><i class="fa fa-check fa-fw mr-2 fa-lg"></i>Quick Start</a>
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<a class="dropdown-item" href="../doc/faq.html"><i class="fa fa-question fa-fw mr-2 fa-lg"></i>FAQ</a>
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<a class="dropdown-item" href="https://stackoverflow.com/questions/tagged/openlayers"><i class="fa fa-stack-overflow fa-fw mr-2"></i>Ask a Question</a>
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<li class="nav-item dropdown">
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<a class="nav-link dropdown-toggle" href="#" id="codedropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Code</a>
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<div class="dropdown-menu dropdown-menu-right mb-3" aria-labelledby="codedropdown">
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<a class="dropdown-item" href="https://github.com/openlayers/openlayers"><i class="fa fa-github fa-fw mr-2 fa-lg"></i>Repository</a>
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<a class="dropdown-item" href="/download/"><i class="fa fa-download fa-fw mr-2 fa-lg"></i>Download</a>
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</nav>
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<div id="latest-check" class="alert alert-warning alert-dismissible" role="alert" style="display:none">
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<button id="latest-dismiss" type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span></button>
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This example uses OpenLayers v<span>6.5.0</span>. The <a id="latest-link" href="#" class="alert-link">latest</a> is v<span id="latest-version"></span>.
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</div>
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<div class="row-fluid">
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<a href="#" id="codepen-button" class="btn btn-link float-right">
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<i class="fa fa-codepen fa-lg"></i> Edit
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</a>
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<div class="span12">
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<h4 id="title">Reprojection with EPSG.io Search</h4>
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<p class="tags">
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<span class="badge-group">
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<a
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href="./index.html?q=reprojection" class="badge badge-info">reprojection</a
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><a
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class="badge badge-info tag-modal-toggle text-white"
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data-toggle="modal"
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data-target="#tag-example-list"
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data-title="reprojection"
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data-content="
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<a class="list-group-item list-group-item-action" href="./disable-image-smoothing.html">Disable Image Smoothing</a>
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<a class="list-group-item list-group-item-action" href="./reprojection-image.html">Image Reprojection</a>
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<a class="list-group-item list-group-item-action" href="./reprojection-wgs84.html">OpenStreetMap Reprojection</a>
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<a class="list-group-item list-group-item-action" href="./scaleline-indiana-east.html">OpenStreetMap Reprojection with ScaleLine Control</a>
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<a class="list-group-item list-group-item-action" href="./reprojection.html">Raster Reprojection</a>
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<a class="list-group-item list-group-item-action active" href="./reprojection-by-code.html">Reprojection with EPSG.io Search</a>"
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tabindex="0"
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>6</a>
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</span>
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<span class="badge-group">
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<a
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href="./index.html?q=projection" class="badge badge-info">projection</a
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><a
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class="badge badge-info tag-modal-toggle text-white"
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data-toggle="modal"
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data-target="#tag-example-list"
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data-title="projection"
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data-content="
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<a class="list-group-item list-group-item-action" href="./wms-custom-proj.html">Custom Tiled WMS</a>
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<a class="list-group-item list-group-item-action" href="./reprojection-image.html">Image Reprojection</a>
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<a class="list-group-item list-group-item-action" href="./reprojection-wgs84.html">OpenStreetMap Reprojection</a>
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<a class="list-group-item list-group-item-action" href="./scaleline-indiana-east.html">OpenStreetMap Reprojection with ScaleLine Control</a>
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<a class="list-group-item list-group-item-action" href="./reprojection.html">Raster Reprojection</a>
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<a class="list-group-item list-group-item-action active" href="./reprojection-by-code.html">Reprojection with EPSG.io Search</a>
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<a class="list-group-item list-group-item-action" href="./wms-image-custom-proj.html">Single Image WMS with Proj4js</a>
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<a class="list-group-item list-group-item-action" href="./sphere-mollweide.html">Sphere Mollweide</a>
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<a class="list-group-item list-group-item-action" href="./wms-no-proj.html">WMS without Projection</a>
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<a class="list-group-item list-group-item-action" href="./zoomify.html">Zoomify</a>"
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tabindex="0"
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>10</a>
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</span>
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<span class="badge-group">
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<a
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href="./index.html?q=proj4js" class="badge badge-info">proj4js</a
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><a
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class="badge badge-info tag-modal-toggle text-white"
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data-toggle="modal"
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data-target="#tag-example-list"
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data-title="proj4js"
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data-content="
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<a class="list-group-item list-group-item-action" href="./reprojection-image.html">Image Reprojection</a>
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<a class="list-group-item list-group-item-action" href="./reprojection.html">Raster Reprojection</a>
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<a class="list-group-item list-group-item-action active" href="./reprojection-by-code.html">Reprojection with EPSG.io Search</a>
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<a class="list-group-item list-group-item-action" href="./wms-image-custom-proj.html">Single Image WMS with Proj4js</a>
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<a class="list-group-item list-group-item-action" href="./sphere-mollweide.html">Sphere Mollweide</a>"
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tabindex="0"
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>5</a>
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</span>
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<span class="badge-group">
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<a
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href="./index.html?q=epsg.io" class="badge badge-info">epsg.io</a
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><a
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class="badge badge-info tag-modal-toggle text-white"
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data-toggle="modal"
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data-target="#tag-example-list"
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data-title="epsg.io"
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data-content="
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<a class="list-group-item list-group-item-action active" href="./reprojection-by-code.html">Reprojection with EPSG.io Search</a>"
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tabindex="0"
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>1</a>
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</span>
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<span class="badge-group">
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<a
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href="./index.html?q=graticule" class="badge badge-info">graticule</a
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><a
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class="badge badge-info tag-modal-toggle text-white"
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data-toggle="modal"
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data-target="#tag-example-list"
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data-title="graticule"
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data-content="
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<a class="list-group-item list-group-item-action" href="./graticule.html">Map Graticule</a>
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<a class="list-group-item list-group-item-action active" href="./reprojection-by-code.html">Reprojection with EPSG.io Search</a>
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<a class="list-group-item list-group-item-action" href="./sphere-mollweide.html">Sphere Mollweide</a>"
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tabindex="0"
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>3</a>
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</span>
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</p>
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<div class="modal modal-tag-example" id="tag-example-list" tabindex="-1" role="dialog" aria-labelledby="tag-example-title" aria-hidden="true">
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<div class="modal-dialog modal-dialog-scrollable" role="document">
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<div class="modal-content">
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<div class="modal-header">
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<h5 class="modal-title" id="tag-example-title"></h5>
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<button type="button" class="close" data-dismiss="modal" aria-label="Close">
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<span aria-hidden="true">×</span>
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</button>
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</div>
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<div class="modal-body">
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<div class="list-group"></div>
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</div>
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</div>
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</div>
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</div>
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<div id="map" class="map"></div>
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<form class="form-inline">
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<label for="epsg-query">Search projection:</label>
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<input type="text" id="epsg-query" placeholder="4326, 27700, 3031, US National Atlas, Swiss, France, ..." class="form-control" size="50" />
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<button id="epsg-search" class="btn">Search</button>
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<span id="epsg-result"></span>
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<div>
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<label for="render-edges">
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Render reprojection edges
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<input type="checkbox" id="render-edges">
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</label>
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<label for="show-graticule">
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Show graticule
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<input type="checkbox" id="show-graticule" />
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</label>
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</div>
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</form>
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</div>
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<form method="POST" id="codepen-form" target="_blank" action="https://codesandbox.io/api/v1/sandboxes/define">
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<input id="codesandbox-params" type="hidden" name="parameters">
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</form>
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</div>
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<div class="row-fluid">
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<div class="span12">
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<p id="shortdesc">Demonstrates client-side raster reprojection of OSM to arbitrary projection</p>
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<div id="docs"><p>This example shows client-side raster reprojection capabilities from OSM (EPSG:3857) to arbitrary projection by searching in <a href="https://epsg.io/">EPSG.io</a> database.</p>
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</div>
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</div>
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</div>
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<div class="row-fluid">
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<h5 class="source-heading">main.js</h5>
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<pre><code id="example-js-source" class="language-js">import 'ol/ol.css';
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import Graticule from 'ol/layer/Graticule';
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import Map from 'ol/Map';
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import OSM from 'ol/source/OSM';
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import Stroke from 'ol/style/Stroke';
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import TileImage from 'ol/source/TileImage';
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import TileLayer from 'ol/layer/Tile';
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import View from 'ol/View';
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import proj4 from 'proj4';
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import {applyTransform} from 'ol/extent';
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import {get as getProjection, getTransform} from 'ol/proj';
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import {register} from 'ol/proj/proj4';
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var graticule = new Graticule({
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// the style to use for the lines, optional.
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strokeStyle: new Stroke({
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color: 'rgba(255,120,0,0.9)',
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width: 2,
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lineDash: [0.5, 4],
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}),
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showLabels: true,
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visible: false,
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wrapX: false,
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});
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var map = new Map({
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layers: [
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new TileLayer({
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source: new OSM(),
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}),
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graticule ],
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target: 'map',
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view: new View({
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projection: 'EPSG:3857',
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center: [0, 0],
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zoom: 1,
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}),
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});
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var queryInput = document.getElementById('epsg-query');
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var searchButton = document.getElementById('epsg-search');
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var resultSpan = document.getElementById('epsg-result');
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var renderEdgesCheckbox = document.getElementById('render-edges');
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var showGraticuleCheckbox = document.getElementById('show-graticule');
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function setProjection(code, name, proj4def, bbox) {
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if (code === null || name === null || proj4def === null || bbox === null) {
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resultSpan.innerHTML = 'Nothing usable found, using EPSG:3857...';
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map.setView(
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new View({
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projection: 'EPSG:3857',
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center: [0, 0],
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zoom: 1,
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})
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);
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return;
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}
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resultSpan.innerHTML = '(' + code + ') ' + name;
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var newProjCode = 'EPSG:' + code;
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proj4.defs(newProjCode, proj4def);
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register(proj4);
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var newProj = getProjection(newProjCode);
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var fromLonLat = getTransform('EPSG:4326', newProj);
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var worldExtent = [bbox[1], bbox[2], bbox[3], bbox[0]];
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newProj.setWorldExtent(worldExtent);
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// approximate calculation of projection extent,
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// checking if the world extent crosses the dateline
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if (bbox[1] > bbox[3]) {
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worldExtent = [bbox[1], bbox[2], bbox[3] + 360, bbox[0]];
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}
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var extent = applyTransform(worldExtent, fromLonLat, undefined, 8);
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newProj.setExtent(extent);
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var newView = new View({
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projection: newProj,
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});
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map.setView(newView);
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newView.fit(extent);
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}
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function search(query) {
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resultSpan.innerHTML = 'Searching ...';
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fetch('https://epsg.io/?format=json&q=' + query)
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.then(function (response) {
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return response.json();
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})
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.then(function (json) {
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var results = json['results'];
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if (results && results.length > 0) {
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for (var i = 0, ii = results.length; i < ii; i++) {
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var result = results[i];
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if (result) {
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var code = result['code'];
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var name = result['name'];
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var proj4def = result['proj4'];
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var bbox = result['bbox'];
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if (
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code &&
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code.length > 0 &&
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proj4def &&
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proj4def.length > 0 &&
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bbox &&
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bbox.length == 4
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) {
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setProjection(code, name, proj4def, bbox);
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return;
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}
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}
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}
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}
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setProjection(null, null, null, null);
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});
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}
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/**
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* Handle click event.
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* @param {Event} event The event.
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*/
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searchButton.onclick = function (event) {
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search(queryInput.value);
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event.preventDefault();
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};
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/**
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* Handle checkbox change event.
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*/
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renderEdgesCheckbox.onchange = function () {
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map.getLayers().forEach(function (layer) {
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if (layer instanceof TileLayer) {
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var source = layer.getSource();
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if (source instanceof TileImage) {
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source.setRenderReprojectionEdges(renderEdgesCheckbox.checked);
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}
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}
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});
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};
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/**
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* Handle checkbox change event.
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*/
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showGraticuleCheckbox.onchange = function () {
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graticule.setVisible(showGraticuleCheckbox.checked);
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};
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|
</code></pre>
|
|
</div>
|
|
|
|
<div class="row-fluid">
|
|
<h5 class="source-heading">index.html</h5>
|
|
<pre><code id="example-html-source" class="language-markup"><!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="UTF-8">
|
|
<title>Reprojection with EPSG.io Search</title>
|
|
<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
|
|
<script src="https://unpkg.com/elm-pep"></script>
|
|
<style>
|
|
.map {
|
|
width: 100%;
|
|
height:400px;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div id="map" class="map"></div>
|
|
<form class="form-inline">
|
|
<label for="epsg-query">Search projection:</label>
|
|
<input type="text" id="epsg-query" placeholder="4326, 27700, 3031, US National Atlas, Swiss, France, ..." class="form-control" size="50" />
|
|
<button id="epsg-search" class="btn">Search</button>
|
|
<span id="epsg-result"></span>
|
|
<div>
|
|
<label for="render-edges">
|
|
Render reprojection edges
|
|
<input type="checkbox" id="render-edges">
|
|
</label>
|
|
<label for="show-graticule">
|
|
&nbsp;&nbsp;&nbsp;Show graticule
|
|
<input type="checkbox" id="show-graticule" />
|
|
</label>
|
|
</div>
|
|
</form>
|
|
<script src="main.js"></script>
|
|
</body>
|
|
</html></code></pre>
|
|
</div>
|
|
|
|
|
|
<div class="row-fluid">
|
|
<h5 class="source-heading">package.json</h5>
|
|
<pre><code id="example-pkg-source" class="language-json">{
|
|
"name": "reprojection-by-code",
|
|
"dependencies": {
|
|
"ol": "6.5.0",
|
|
"proj4": "2.6.3"
|
|
},
|
|
"devDependencies": {
|
|
"parcel": "^2.0.0-beta.1"
|
|
},
|
|
"scripts": {
|
|
"start": "parcel index.html",
|
|
"build": "parcel build --public-url . index.html"
|
|
}
|
|
}</code></pre>
|
|
</div>
|
|
</div>
|
|
|
|
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
|
|
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.bundle.min.js"></script>
|
|
<script src="./resources/prism/prism-1.20.0.min.js"></script>
|
|
<script src="./resources/common.js"></script>
|
|
<script src="common.js"></script>
|
|
<script src="reprojection-by-code.js"></script>
|
|
<script>
|
|
$('#tag-example-list').on('show.bs.modal', function (event) {
|
|
const button = $(event.relatedTarget); // Button that triggered the modal
|
|
const title = button.data('title');
|
|
const content = button.data('content');
|
|
const modal = $(this)
|
|
modal.find('.modal-title').text(title);
|
|
modal.find('.modal-body').html(content);
|
|
});
|
|
|
|
var packageUrl = 'https://raw.githubusercontent.com/openlayers/openlayers.github.io/build/package.json';
|
|
fetch(packageUrl).then(function(response) {
|
|
return response.json();
|
|
}).then(function(json) {
|
|
var latestVersion = json.version;
|
|
document.getElementById('latest-version').innerHTML = latestVersion;
|
|
var url = window.location.href;
|
|
var branchSearch = url.match(/\/([^\/]*)\/examples\//);
|
|
var cookieText = 'dismissed=-' + latestVersion + '-';
|
|
var dismissed = document.cookie.indexOf(cookieText) != -1;
|
|
if (branchSearch && !dismissed && /^v[0-9\.]*$/.test(branchSearch[1]) && '6.5.0' != latestVersion) {
|
|
var link = url.replace(branchSearch[0], '/latest/examples/');
|
|
fetch(link, {method: 'head'}).then(function(response) {
|
|
var a = document.getElementById('latest-link');
|
|
a.href = response.status == 200 ? link : '../../latest/examples/';
|
|
});
|
|
var latestCheck = document.getElementById('latest-check');
|
|
latestCheck.style.display = '';
|
|
document.getElementById('latest-dismiss').onclick = function() {
|
|
latestCheck.style.display = 'none';
|
|
document.cookie = cookieText;
|
|
}
|
|
}
|
|
});
|
|
</script>
|
|
</body>
|
|
</html>
|