OpenStreetMap Reprojection with ScaleLine Control

This example uses OpenLayers v4.0.1. The latest is v.

#### OpenStreetMap Reprojection with ScaleLine Control

Demonstrates client-side reprojection of OpenStreetMap to NAD83 Indiana East.

This example shows client-side reprojection of OpenStreetMap to NAD83 Indiana East, including a ScaleLine control with US units.

Related API documentation:

- ol.Map
,
- ol.View
,
- ol.control.ScaleLine
,
- ol.layer.Tile
,
- ol.proj
,
- ol.source.OSM

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OpenStreetMap Reprojection with ScaleLine Control Demonstrates client-side reprojection of OpenStreetMap to NAD83 Indiana East. proj4.defs('Indiana-East', 'PROJCS["IN83-EF",GEOGCS["LL83",DATUM["NAD83",' + 'SPHEROID["GRS1980",6378137.000,298.25722210]],PRIMEM["Greenwich",0],' + 'UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],' + 'PARAMETER["false_easting",328083.333],' + 'PARAMETER["false_northing",820208.333],' + 'PARAMETER["scale_factor",0.999966666667],' + 'PARAMETER["central_meridian",-85.66666666666670],' + 'PARAMETER["latitude_of_origin",37.50000000000000],' + 'UNIT["Foot_US",0.30480060960122]]'); var map = new ol.Map({ layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }) ], target: 'map', view: new ol.View({ projection: 'Indiana-East', center: ol.proj.fromLonLat([-85.685, 39.891], 'Indiana-East'), zoom: 7, extent: ol.proj.transformExtent([-172.54, 23.81, -47.74, 86.46], 'EPSG:4326', 'Indiana-East'), minZoom: 6 }) }); map.addControl(new ol.control.ScaleLine({units: 'us'})); <div id="map" class="map"></div>

    <!DOCTYPE html>
    <html>
      <head>
        <title>OpenStreetMap Reprojection with ScaleLine Control</title>
        <link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css">
        <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
        <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
        <script src="https://openlayers.org/en/v4.0.1/build/ol.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/proj4js/2.3.15/proj4.js"></script>
      </head>
      <body>
        <div id="map" class="map"></div>
        <script>
          proj4.defs('Indiana-East', 'PROJCS["IN83-EF",GEOGCS["LL83",DATUM["NAD83",' +
              'SPHEROID["GRS1980",6378137.000,298.25722210]],PRIMEM["Greenwich",0],' +
              'UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],' +
              'PARAMETER["false_easting",328083.333],' +
              'PARAMETER["false_northing",820208.333],' +
              'PARAMETER["scale_factor",0.999966666667],' +
              'PARAMETER["central_meridian",-85.66666666666670],' +
              'PARAMETER["latitude_of_origin",37.50000000000000],' +
              'UNIT["Foot_US",0.30480060960122]]');

          var map = new ol.Map({
            layers: [
              new ol.layer.Tile({
                source: new ol.source.OSM()
              })
            ],
            target: 'map',
            view: new ol.View({
              projection: 'Indiana-East',
              center: ol.proj.fromLonLat([-85.685, 39.891], 'Indiana-East'),
              zoom: 7,
              extent: ol.proj.transformExtent([-172.54, 23.81, -47.74, 86.46],
                  'EPSG:4326', 'Indiana-East'),
              minZoom: 6
            })
          });

          map.addControl(new ol.control.ScaleLine({units: 'us'}));
        </script>
      </body>
    </html>