mirror of
https://github.com/Viglino/ol-ext.git
synced 2026-02-01 17:46:22 +00:00
445 lines
13 KiB
HTML
445 lines
13 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>GeoJSONX</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="description" content="Convert CSV file to GeoJSON." />
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<meta name="keywords" content="openlayers, geojson, topojson, online, minify, compress" />
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<!-- jQuery -->
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<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
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<!-- FontAwesome -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
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<!-- ol3 to show the map -->
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<link rel="stylesheet" href="https://openlayers.org/en/latest/css/ol.css" />
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<script type="text/javascript" src="https://openlayers.org/en/latest/build/ol.js"></script>
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<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL,Object.assign"></script>
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<!-- filesaver-js -->
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<script type="text/javascript" src="https://cdn.rawgit.com/eligrey/FileSaver.js/aa9f4e0e/FileSaver.min.js"></script>
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<!-- Papaparse -->
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<script type="text/javascript" src="https://unpkg.com/papaparse@4.6.3/papaparse.min.js"></script>
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<!-- ol-ext -->
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<link rel="stylesheet" href="../../dist/ol-ext.css" />
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<script type="text/javascript" src="../../dist/ol-ext.js"></script>
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<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
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<script src="https://unpkg.com/elm-pep"></script>
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<!-- TopoJSON Writer -->
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<script src="https://unpkg.com/topojson@3"></script>
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<!-- exif2geojson -->
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<link rel="stylesheet" href="../style.css" />
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<style>
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body {
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max-width: 800px;
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margin: 0.5em auto;
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background: #ddc;
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font-family: 'Open Sans Condensed',Arial,Helvetica,Verdana,sans-serif;
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color: #775;
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}
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h1 {
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background: #886;
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}
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h1 .fa {
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color: #fff;
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font-size:1.8em;
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vertical-align: middle;
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}
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.info {
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padding:1em 2em;
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background: #fff;
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border-radius: 6px;
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clear: both;
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}
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.globe {
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text-align:center;
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float:left;
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font-size: 5em;
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width:40%;
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}
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.globe .fa {
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vertical-align: middle;
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margin:0 5px;
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color:#664;
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}
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.globe .fa-file-excel-o {
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font-size: 0.75em;
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}
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.globe .fa-arrow-circle-right {
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font-size: 0.5em;
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}
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#dropfile {
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font-size:1.2em;
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width:55%;
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float: right;
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border:3px dashed #997;
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padding:1em 3.5em;
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text-align:center;
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box-sizing: border-box;
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margin: 0 3em 1em -3em;
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font-weight: bold;
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}
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#dropfile.hover{
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border-color: #664;
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background: #e6e6d6;
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}
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#pbar {
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display: none;
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width:200px;
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border:1px solid #664;
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margin: 0.5em;
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float:left;
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}
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#pbar > div {
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height: 15px;
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width: 0;
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background: #664;
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}
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label,
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input {
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vertical-align: middle;
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}
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textarea {
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width:100%;
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height:15em;
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box-sizing:border-box;
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white-space: nowrap;
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min-width: 100%;
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max-width: 100%;
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}
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.loading {
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font-weight: bold;
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margin: 0;
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padding:0.5em;
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height:1em;
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}
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.info > button {
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float: right;
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background: #887;
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color: #fff;
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border: 0;
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margin: 0 2em;
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font-size: 1.3em;
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padding: 0.25em 1em;
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display: none;
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cursor: pointer;
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}
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.info > button i {
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color:#fff;
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}
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#map {
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float: none;
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width: 100%;
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height: 400px;
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}
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.warn {
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background: #fe0;
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color: #800;
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padding: 0 1em;
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}
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body.isloading > .info > *,
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body.isloading > * {
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opacity: .5;
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}
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body.isloading > .info .loading,
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body.isloading > .info {
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opacity: 1;
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}
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.saved {
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float: left;
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margin-right: 1em;
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color: #fff;
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background: #0af;
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padding: .5em 1em;
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}
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.nosave .saved {
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background: #800;
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}
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#map .ol-zoombt {
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display: none!important;
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}
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.help {
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display: none;
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padding: .5em 1em .5em 3em;
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background-color: #eee;
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margin: 0 -1em .5em -3em;
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}
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.geojson .help.geojson,
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.topojson .help.topojson,
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.geojsonp .help.geojsonp,
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.geojsonx .help.geojsonx {
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display: block;
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}
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.info li input[type="text"] {
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width: 100%;
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}
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li .warning {
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margin: 0;
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padding: .5em 1em;
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background-color: #d70;
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color: yellow;
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}
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.topojson .x,
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.geojson .x {
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display: none;
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}
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</style>
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</head>
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<body >
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<a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>
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<a class="title" href="../../index.html">
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<h1><i class="fa fa-file-excel-o"></i> GeoJSONX</h1>
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</a>
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<div class="info">
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<b>Compress (minify) GeoJSON.</b><br/>
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Choose your format, compare resulting file size and look at result on the map.
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</div>
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<div class="globe">
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<i class="fa fa-globe"></i><i class="fa fa-arrow-circle-right"></i><i class="fa fa-file-excel-o"></i>
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</div>
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<div id="dropfile">
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Drag & drop GeoJSON file to convert.
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</div>
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<div class="info">
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<p>Options:</p>
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<ul style="list-style:none;">
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<li>
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<label>Format:</label>
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<select id="format" onchange="setFormat()">
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<option value='geojson'>GeoJSON</option>
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<option value='topojson'>TopoJSON</option>
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<option value='geojsonx' selected="selected">GeoJSONX</option>
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<option value='geojsonp'>GeoJSONP</option>
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</select>
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</li>
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<li class="help geojson">
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Standard <a href="https://en.wikipedia.org/wiki/GeoJSON">GeoJSON</a> format.
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</li>
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<li class="help topojson">
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<a href="https://en.wikipedia.org/wiki/GeoJSON#TopoJSON">TopoJSON</a> is an extension
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of GeoJSON that encodes geospatial topology and that typically provides smaller file sizes.
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</li>
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<li class="help geojsonx">
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<b>ol/format/GeoJSONX</b> encode features properties and geometry to minimize the file size.
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<br/>
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Properties keys are stored in a dictionnary to minimize the redondances.
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</li>
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<li class="help geojsonp">
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<b>ol/format/GeoJSONP</b> encode features geometry using
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<a href="https://developers.google.com/maps/documentation/utilities/polylinealgorithm">Encoded Polyline Algorithm Format</a>.
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<br/>
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Properties keys are stored in a dictionnary to minimize the redondances.
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<p class="warning">EPA only support 5/6 decimals precision. Using more digits may lead to invalid geometry.</p>
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</li>
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<li>
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<label>Decimals:</label>
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<input id="decimals" type="number" value="6" min="-2" max="20" onchange="setFormat()" />
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<label>Reduce the precision of the data (to x digits).</label>
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</li>
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<li class="x">
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<label>
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<input id="nonull" type="checkbox" checked="checked" onchange="setFormat()" />
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Remove null properties.
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</label>
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</li>
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<li class="x">
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<label>
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<input id="layout" type="checkbox" onchange="setFormat()" />
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Use 3D layout.
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</label>
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</li>
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<li class="x">
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<label>
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<input id="extended" type="checkbox" onchange="setFormat()" />
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Extract extended properties on features (id, bbox, etc.)
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</label>
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</li>
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<li class="x">
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<label>White list (a list of properties to keep separated with ','):</label>
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<input id="whitel" type="text" onchange="setFormat()" />
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</li>
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<li class="x">
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<label>Black list (a list of properties to remove separated with ','):</label>
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<input id="blackl" type="text" onchange="setFormat()" />
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</li>
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</ul>
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<p style="margin-bottom:0;">Result:</p>
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<div id="pbar"><div></div></div>
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<button onclick="download()"><i class="fa fa-download"></i> Download</button>
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<div class="loading"></div>
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<textarea id="result"></textarea>
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<div id="map"></div>
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</div>
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<script>
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var name, fileSize, features, geojson, result;
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var format;
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function setFormat() {
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var v = $('#format').val();
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document.body.className = v;
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if ($('#decimals').val()<6) $('.geojsonp .warning').hide();
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else $('.geojsonp .warning').show();
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switch(v) {
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case 'topojson': {
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format = new ol.format.TopoJSON();
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format.writeFeaturesObject = function (features) {
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var fmt = new ol.format.GeoJSON()
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var geojson = fmt.writeFeaturesObject(features, { decimals: $('#decimals').val() });
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return topojson.topology({ layer: geojson });
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}
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break;
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}
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case 'geojsonx': {
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format = new ol.format.GeoJSONX({
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deleteNullProperties: $('#nonull').prop('checked'),
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layout: $('#layout').prop('checked') ? 'XYZM' : null,
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decimals: $('#decimals').val(),
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extended: $('#extended').prop('checked'),
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whiteList: $('#whitel').val() ? $('#whitel').val().split(',') : null,
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blackList: $('#blackl').val() ? $('#blackl').val().split(',') : null
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});
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break;
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}
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case 'geojsonp': {
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format = new ol.format.GeoJSONP({
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deleteNullProperties: $('#nonull').prop('checked'),
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decimals: $('#decimals').val(),
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extended: $('#extended').prop('checked'),
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whiteList: $('#whitel').val() ? $('#whitel').val().split(',') : null,
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blackList: $('#blackl').val() ? $('#blackl').val().split(',') : null
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});
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break;
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}
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default: {
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format = new ol.format.GeoJSON();
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break;
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}
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}
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encode();
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}
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setFormat();
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/** Save file */
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function download() {
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var blob = new Blob([result], {type: "text/plain;charset=utf-8"});
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saveAs(blob, name+'.'+$('#format').val());
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}
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// Add feature on drop
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var dd = new ol.interaction.DropFile({ projection: 'EPSG:4326' });
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dd.on('loadstart', function () {
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$('#dropfile').removeClass('hover');
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$('body').addClass('isloading');
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$('.loading').html(' loading...');
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});
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dd.on('loadend', function (e) {
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if (!e.features) {
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$('.loading').html('<span class="warn">No valid file...</span>');
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return;
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} else {
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features = e.features;
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showFeatures(origin, features);
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name = e.file.name.replace(/\..+$/, '');
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fileSize = e.file.size;
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encode();
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}
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});
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function showFeatures(layer, features) {
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layer.getSource().clear();
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features.forEach(function (f) {
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f = f.clone();
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f.getGeometry().transform('EPSG:4326', map.getView().getProjection())
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layer.getSource().addFeature(f);
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});
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}
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function encode() {
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if (!features) return;
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if (!$('body').hasClass('isloading')) {
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$('body').addClass('isloading');
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$('.loading').html(' loading...');
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setTimeout(encode, 100);
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return;
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}
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geojson = format.writeFeaturesObject(features, { decimals: $('#decimals').val() });
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showFeatures(encoded, format.readFeaturesFromObject(geojson));
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result = JSON.stringify(geojson);
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$("#result").val(JSON.stringify(geojson,null,' ').substr(0,50000)+(result.length>50000? '\n...':''));
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var size;
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if (result.length > 1024*1024) {
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size = (result.length/1024/1024).toFixed(2) +' Mo / '+ (fileSize/1024/1024).toFixed(2) + ' Mo'
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} else {
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size = (result.length/1024).toFixed(0) +' Ko / '+ (fileSize/1024).toFixed(0) + ' Ko';
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}
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$(".loading").html(
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'<div class="saved">' + (100*(fileSize-result.length)/fileSize).toFixed(0) + '% saved</div>'
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+ features.length+' feature(s) loaded.'
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+'<br/>'+ size
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);
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$('body').removeClass('isloading');
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if (fileSize<result.length) $('body').addClass('nosave');
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$("button").show();
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}
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$(document).on('dragover dragleave', function (e) {
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e.preventDefault();
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e.stopPropagation();
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if (e.type=='dragover') $("#dropfile").addClass('hover');
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else $("#dropfile").removeClass('hover');
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return false;
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});
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// The map
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var map = new ol.Map({
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target: 'map',
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view: new ol.View({
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zoom: 1,
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center: [270055, 3528229.]
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}),
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layers: [new ol.layer.Tile({ title: 'OSM', source: new ol.source.OSM() })]
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});
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map.addControl(new ol.control.Permalink({ visible: false, geohash: true }));
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var origin = new ol.layer.VectorImage({
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title: 'Origin',
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source: new ol.source.Vector(),
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style: ol.style.Style.defaultStyle({color:[255,0,0]})
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});
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map.addLayer(origin);
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var encoded = new ol.layer.VectorImage({
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title: 'Encoded',
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source: new ol.source.Vector(),
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// style: ol.style.Style.defaultStyle({color:[0,255,0]})
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});
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map.addLayer(encoded);
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map.addControl(new ol.control.LayerSwitcher);
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var select = new ol.interaction.Select();
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map.addInteraction(select);
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var popup = new ol.Overlay.PopupFeature({
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className: 'default anim',
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canFix: true,
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select: select
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});
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map.addOverlay(popup);
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</script>
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</body>
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</html> |