Layers

22 Feb 20182 minutes to read

Map is maintained through layers and it can accommodate one or more layers.

Multilayer

The Multilayer support allows you to load multiple shape files in a single container, enabling maps to display more information.

Adding Multiple Layers in the Map

The shape layers is the core layer of the map. The multiple layers can be added in the shape Layers as sub-shape-file-layers within the shape Layers.

SubLayer

The subLayer is the collection of shape Layers.

In this example, World Map shape is used as shape data by utilizing the “WorldMap.json” file in the following folder structure obtained from downloaded Maps_GeoJSON folder.

..\ Maps_GeoJSON\

Here “MapController.cs” is populated with data of World Map in “MapController.cs”.

~/Controller/MapController.cs

C#

public ActionResult Map()

	{

		ViewBag.worldMap = GetWorldMap();
        return View();
	}

	public object GetWorldMap ()

	{

		string data = System.IO.File.ReadAllText(Server.MapPath("~/App_Data/WorldMap.json"));

		JavaScriptSerializer serialObj = new JavaScriptSerializer();

		serialObj.MaxJsonLength = int.MaxValue;

		return new MapData(data);
	}

Refer both USA data and world map data as illustrated in the following “Map.cshtml”.

CSHTML

<ej-map id="maps">
<e-layers >
<e-layer shape-data="ViewBag.worldMap" >
<e-shape-settings   stroke="white" fill="#9CBF4E"
stroke-thickness="0.5" >
</e-shape-settings>
</e-layer>
</e-layers>
</ej-map>

<script>
  $("document").ready(function () {
           var mapObj = $("#maps").data("ejMap");
           mapObj.model.layers[0].subLayers= [{
                    shapeData: usMap,
                    shapeSettings: {
                        fill: "orange",
                        strokeThickness: "1",
                        stroke: "White"
                    }
                }];
              $("#maps").ejMap("refresh");
      
       });
</script>