Create Parallel lines using one polyline geometry

omega_cancer · ‎12-09-2015

Is it possible to create two parallel lines using single polyline geometry?

var polyline = new Polyline([
           [33, 71, 0],
           [32, 70, 1000],
           [30, 66, 0],
           [31, 73, 1000]
         ]);

This creates a single connected line. How can I draw a 2 lines one from

[33, 71, 0],
[32, 70, 1000]

and other from

 [30, 66, 0],
 [31, 73, 1000]

using same graphic and polyline geometry.

Any help would be highly appreciated.

RobertScheitlin__GISP · ‎12-09-2015

Abdul,

Sure here is a sample:

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
    <title></title>
    <link rel="stylesheet" href="http://js.arcgis.com/3.15/esri/css/esri.css">
    <style>
      html, body, #map {
        height: 100%; width: 100%; margin: 0; padding: 0;
      }
      #controls {
        background: #fff;
        box-shadow: 0 6px 6px -6px #999;
        color: #444;
        font-family: sans-serif;
        height: auto;
        left: 1em;
        padding: 1em;
        position: absolute;
        top: 1em;
        width: auto;
        z-index: 40;
      }
    </style>

    <script src="http://js.arcgis.com/3.15/"></script>
    <script>
      var map;

      require([
        "esri/map", "esri/geometry/Polyline", "esri/symbols/SimpleLineSymbol",
        "esri/graphic", "esri/layers/GraphicsLayer",
        "dojo/dom", "dojo/dom-attr", "dojo/domReady!"
      ], function(
        Map, Polyline, SimpleLineSymbol,
        Graphic, GraphicsLayer,
        dom, domAttr
      ) {
        map = new Map("map", {
          basemap: "streets",
          center: [-120.741, 56.39],
          slider: false,
          zoom: 2
        });
        var symbol = new SimpleLineSymbol().setColor("blue");
        var gl = new GraphicsLayer({ id: "Polylines" });
        map.addLayer(gl);
        map.on("click", function(e) {
          var line = new Polyline([[[-50, 0], [-120, -20], [-130, 0]],[[-50, -2], [-120, -22], [-130, -2]]]);
          var graphic = new Graphic(line, symbol);
          gl.add(graphic);
        });
      });
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>

View solution in original post

RobertScheitlin__GISP · ‎12-09-2015

Abdul,

Sure here is a sample:

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
    <title></title>
    <link rel="stylesheet" href="http://js.arcgis.com/3.15/esri/css/esri.css">
    <style>
      html, body, #map {
        height: 100%; width: 100%; margin: 0; padding: 0;
      }
      #controls {
        background: #fff;
        box-shadow: 0 6px 6px -6px #999;
        color: #444;
        font-family: sans-serif;
        height: auto;
        left: 1em;
        padding: 1em;
        position: absolute;
        top: 1em;
        width: auto;
        z-index: 40;
      }
    </style>

    <script src="http://js.arcgis.com/3.15/"></script>
    <script>
      var map;

      require([
        "esri/map", "esri/geometry/Polyline", "esri/symbols/SimpleLineSymbol",
        "esri/graphic", "esri/layers/GraphicsLayer",
        "dojo/dom", "dojo/dom-attr", "dojo/domReady!"
      ], function(
        Map, Polyline, SimpleLineSymbol,
        Graphic, GraphicsLayer,
        dom, domAttr
      ) {
        map = new Map("map", {
          basemap: "streets",
          center: [-120.741, 56.39],
          slider: false,
          zoom: 2
        });
        var symbol = new SimpleLineSymbol().setColor("blue");
        var gl = new GraphicsLayer({ id: "Polylines" });
        map.addLayer(gl);
        map.on("click", function(e) {
          var line = new Polyline([[[-50, 0], [-120, -20], [-130, 0]],[[-50, -2], [-120, -22], [-130, -2]]]);
          var graphic = new Graphic(line, symbol);
          gl.add(graphic);
        });
      });
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>

omega_cancer · ‎12-09-2015

Thanks Robert.

You nailed it like always.