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Layers in Vue Maps component

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 subLayers within the shape layers.

SubLayer

The SubLayer is the collection of shape layers.

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

..\ Maps_GeoJSON\

You can assign the complete contents in WorldMap.json file to new JSON object. For better understanding, a TS file WorldMap.ts is already created to store JSON data in JSON object “worldmap” and also copy the california.json file data, bind value to usa like “worldmap”.

[world_map.ts]

export let world_map = //Paste all the content copied from the world_map.JSON file//

[california.ts]

export let world_map = //Paste all the content copied from the world_map.JSON file//
Source
Preview
app.vue
<template>
    <div id="app">
          <div class='wrapper'>
            <ejs-maps >
                <e-layers>
                    <e-layer :shapeData='shapeData' :shapeSettings='shapeSettings' ></e-layer>
                     <e-layer :shapeData='shapeData1' :type = 'type' :shapeSettings='shapeSettings1' ></e-layer>
                </e-layers>
            </ejs-maps>
        </div>
    </div>
</template>

<script>
import Vue from 'vue';
import { MapsPlugin } from '@syncfusion/ej2-vue-maps';
import { usMap } from './usa.js';
import { world_map } from './world-map.js';
Vue.use(MapsPlugin);
export default {
data () {
    return{
        shapeData: world_map,
        shapeSettings: {
            fill: '#9CBF4E',
            border: { width: 0.5, color: 'White' },
        },
        shapeData1: usMap,
        type: 'SubLayer',
        shapeSettings1: {
            fill: 'orange',
            border: { width: 1, color: 'White' },
        },
    }
},
}
</script>
<style>
  .wrapper {
    max-width: 400px;
    margin: 0 auto;
  }
</style>

Displaying layer in the view

In Maps, you can load multiple shape files. Using the baseLayerIndex property, you can select a layer to display on user interface.

In this example, we have loaded two layers with the World map and the United States map shape data and selected a layer using the baseLayerIndex property to show that layer on the web page.

Source
Preview
app.vue
<template>
    <div id="app">
          <div class='wrapper'>
            <ejs-maps :baseLayerIndex= "baseLayerIndex">
                <e-layers>
                    <e-layer :shapeData='shapeData'></e-layer>
                    <e-layer :shapeData='shapeData1'></e-layer>
                </e-layers>
            </ejs-maps>
        </div>
    </div>
</template>

<script>
import Vue from 'vue';
import { MapsPlugin } from '@syncfusion/ej2-vue-maps';
import { usMap } from './usa.js';
import { world_map } from './world-map.js';
Vue.use(MapsPlugin);
export default {
data () {
    return{
        baseLayerIndex: 1,
        shapeData: world_map,
        shapeData1: usMap,
    }
},
}
</script>
<style>
  .wrapper {
    max-width: 400px;
    margin: 0 auto;
  }
</style>
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