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POGoogle Maps API v3: Group markers?
 

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  1. POGoogle Maps API v3: Group markers?
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    <p>I'm using Google Maps with API v3. I will add many markers, now got question, is there posibility to group markers? For example, by city? I'm using a small snippet to creating sidebar with markers buttons.</p> <p>Here's the code:</p> <pre><code>/** * map */ var mapOpts = { mapOpts: new google.maps.LatLng(60.28527,24.84864), mapTypeId: google.maps.MapTypeId.ROADMAP, scaleControl: true, scrollwheel: false } var map = new google.maps.Map(document.getElementById("map"), mapOpts); // We set zoom and center later by fitBounds() /** * makeMarker() ver 0.2 * creates Marker and InfoWindow on a Map() named 'map' * creates sidebar row in a DIV 'sidebar' * saves marker to markerArray and markerBounds * @param options object for Marker, InfoWindow and SidebarItem * @author Esa 2009 */ var infoWindow = new google.maps.InfoWindow(); var markerBounds = new google.maps.LatLngBounds(); var markerArray = []; function makeMarker(options){ var pushPin = new google.maps.Marker({map:map}); pushPin.setOptions(options); google.maps.event.addListener(pushPin, "click", function(){ infoWindow.setOptions(options); infoWindow.open(map, pushPin); if(this.sidebarButton)this.sidebarButton.button.focus(); }); var idleIcon = pushPin.getIcon(); if(options.sidebarItem){ pushPin.sidebarButton = new SidebarItem(pushPin, options); pushPin.sidebarButton.addIn("sidebar"); } markerBounds.extend(options.position); markerArray.push(pushPin); return pushPin; } google.maps.event.addListener(map, "click", function(){ infoWindow.close(); }); /** * Creates a sidebar item * @constructor * @author Esa 2009 * @param marker * @param options object Supported properties: sidebarItem, sidebarItemClassName, sidebarItemWidth, */ function SidebarItem(marker, opts){ var tag = opts.sidebarItemType || "button"; var row = document.createElement(tag); row.innerHTML = opts.sidebarItem; row.className = opts.sidebarItemClassName || "sidebar_item"; row.style.display = "block"; row.style.width = opts.sidebarItemWidth || "120px"; row.onclick = function(){ google.maps.event.trigger(marker, 'click'); } row.onmouseover = function(){ google.maps.event.trigger(marker, 'mouseover'); } row.onmouseout = function(){ google.maps.event.trigger(marker, 'mouseout'); } this.button = row; } // adds a sidebar item to a &lt;div&gt; SidebarItem.prototype.addIn = function(block){ if(block &amp;&amp; block.nodeType == 1)this.div = block; else this.div = document.getElementById(block) || document.getElementById("sidebar") || document.getElementsByTagName("body")[0]; this.div.appendChild(this.button); } // deletes a sidebar item SidebarItem.prototype.remove = function(){ if(!this.div) return false; this.div.removeChild(this.button); return true; } /** * markers and info window contents */ makeMarker({ position: new google.maps.LatLng(60.28527,24.84864), title: "Vantaankoski", sidebarItem: "Vantaankoski", content: "Vantaankoski" }); makeMarker({ position: new google.maps.LatLng(60.27805,24.85281), title: "Martinlaakso", sidebarItem: "Martinlaakso", content: "Martinlaakso" }); makeMarker({ position: new google.maps.LatLng(60.27049,24.85366), title: "Louhela", sidebarItem: "Louhela", content: "Louhela" }); makeMarker({ position: new google.maps.LatLng(60.26139,24.85478), title: "Myyrmäki", sidebarItem: "Myyrmäki", content: "Myyrmäki" }); makeMarker({ position: new google.maps.LatLng(60.24929,24.86128), title: "Malminkartano", sidebarItem: "Malminkartano", content: "Malminkartano" }); makeMarker({ position: new google.maps.LatLng(60.23963,24.87694), title: "Kannelmäki", sidebarItem: "Kannelmäki", content: "Kannelmäki" }); makeMarker({ position: new google.maps.LatLng(60.23031,24.88353), title: "Pohjois-Haaga", sidebarItem: "Pohjois&lt;br&gt;Haaga", content: "Pohjois-Haaga" }); makeMarker({ position: new google.maps.LatLng(60.21831,24.89354), title: "Huopalahti", sidebarItem: "Huopalahti", content: "Huopalahti" }); makeMarker({ position: new google.maps.LatLng(60.20803,24.92039), title: "Ilmala", sidebarItem: "Ilmala", content: "Ilmala" }); makeMarker({ position: new google.maps.LatLng(60.19899,24.93269), title: "Pasila", sidebarItem: "Pasila", content: "Pasila" }); makeMarker({ position: new google.maps.LatLng(60.17295,24.93981), title: "Helsinki", sidebarItem: "Helsinki", content: "Helsinki" }); /** * fit viewport to markers */ map.fitBounds(markerBounds); </code></pre>
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