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Ejercicio de un Mapa con el con el API de LEAFLET

Creación de un Mapa con Leaflet y OpenStreetMap.

(Las imagenes son tomadas de: clker.com)

13 Abril 2018

Crear directorio de trabajo

  • Crear un directorio llamado ejercicio-01. (ej: D:\univalle\ejercicio-01)
  • Inicializar GIT en el directorio.
    • Desde smartgit:

      • Repository > Add or Create
      • En la ventana "Add Or Create Repository", colocar la ruta del directorio creado (ej: D:\univalle\ejercicio-01)
      • En el mensaje "Should "ejercicio-01" be initialized as a new Git repository?", dar clic en el botón "Initialize".
      • Crear un archivo llamado "index.html" en el directorio creado.
      • Agregar el siguiente bloque de código:
      <!DOCTYPE html>
      	<html lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
      	  <head profile="http://gmpg.org/xfn/11">
      		<title>Mapa de Ejemplo</title>
      		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
      
      		<link rel="stylesheet" type="text/css" href="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" />
      
      		<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js'></script>
      		<script type='text/javascript' src='http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js'></script>
      	  </head>
      
      	  <body>
      		<h1>Mapa (Leaflet)</h1>
      
      		<p>Mapa interactivo con puntos sobre algunos paises
      
      		<div id="map" style="width: 800px; height: 440px; border: 1px solid #AAA;"></div>
      
      		
      		<script type='text/javascript' src='maps/markers.json'></script>
      		<script type='text/javascript' src='maps/leaf-demo.js'></script>
      	  </body>
      	</html>
      
      • Guardar los cambios del archivo index.html

      • Crear el directorio "maps" (Ej. C:\univalle\ejercicio01\maps)

      • Crear el archivo "leaf-demo.js"

      • Agregar el siguiente bloque de código:

      	// See post: http://asmaloney.com/2014/01/code/creating-an-interactive-map-with-leaflet-and-openstreetmap/
      
      	var map = L.map( 'map', {
      	  center: [20.0, 5.0],
      	  minZoom: 2,
      	  zoom: 2
      	})
      
      	L.tileLayer( 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
      	  attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>',
      	  subdomains: ['a', 'b', 'c']
      	}).addTo( map )
      
      	var myURL = jQuery( 'script[src$="leaf-demo.js"]' ).attr( 'src' ).replace( 'leaf-demo.js', '' )
      
      	var myIcon = L.icon({
      	  iconUrl: myURL + 'images/pin24.png',
      	  iconRetinaUrl: myURL + 'images/pin48.png',
      	  iconSize: [29, 24],
      	  iconAnchor: [9, 21],
      	  popupAnchor: [0, -14]
      	})
      
      	for ( var i=0; i < markers.length; ++i )
      	{
      	 L.marker( [markers[i].lat, markers[i].lng], {icon: myIcon} )
      	  .bindPopup( '<a href="' + markers[i].url + '" target="_blank">' + markers[i].name + '</a>' )
      	  .addTo( map );
      	}
      
      • Crear el archivo "markers.js"

      • Agregar el siguiente bloque de código:

      	markers = [
         {
      	 "name": "Canada",
      	 "url": "https://en.wikipedia.org/wiki/Canada",
      	 "lat": 56.130366,
      	 "lng": -106.346771
         },
         {
      	 "name": "Anguilla",
      	 "url": "https://en.wikipedia.org/wiki/Anguilla",
      	 "lat": 18.220554,
      	 "lng": -63.068615
         },
         {
      	 "name": "Barbados",
      	 "url": "https://en.wikipedia.org/wiki/Barbados",
      	 "lat": 13.193887,
      	 "lng": -59.543198
         },
         {
      	 "name": "United States",
      	 "url": "https://en.wikipedia.org/wiki/United_States",
      	 "lat": 37.090240,
      	 "lng": -95.712891
         },
         {
      	 "name": "Ireland",
      	 "url": "https://en.wikipedia.org/wiki/Ireland",
      	 "lat": 53.412910,
      	 "lng": -8.243890
         },
         {
      	 "name": "Scotland",
      	 "url": "https://en.wikipedia.org/wiki/Scotland",
      	 "lat": 56.490671,
      	 "lng": -4.202646
         },
         {
      	 "name": "England",
      	 "url": "https://en.wikipedia.org/wiki/England",
      	 "lat": 52.355518,
      	 "lng": -1.174320
         },
         {
      	 "name": "France",
      	 "url": "https://en.wikipedia.org/wiki/France",
      	 "lat": 46.227638,
      	 "lng": 2.213749
         },
         {
      	 "name": "The Netherlands",
      	 "url": "https://en.wikipedia.org/wiki/The_Netherlands",
      	 "lat": 52.132633,
      	 "lng": 5.291266
         },
         {
      	 "name": "Switzerland",
      	 "url": "https://en.wikipedia.org/wiki/Switzerland",
      	 "lat": 46.818188,
      	 "lng": 8.227512
         },
         {
      	 "name": "South Africa",
      	 "url": "https://en.wikipedia.org/wiki/South_Africa",
      	 "lat": -30.559482,
      	 "lng": 22.937506
         },
         {
      	 "name": "Madagascar",
      	 "url": "https://en.wikipedia.org/wiki/Madagascar",
      	 "lat": -18.766947,
      	 "lng": 46.869107
         },
         {
      	 "name": "Taiwan",
      	 "url": "https://en.wikipedia.org/wiki/Taiwan",
      	 "lat": 23.697810,
      	 "lng": 120.960515
         },
         {
      	 "name": "Japan",
      	 "url": "https://en.wikipedia.org/wiki/Japan",
      	 "lat": 36.204824,
      	 "lng": 138.252924
         }
      ];
      

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