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PObuilding polygons after removing them from the map
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  1. PObuilding polygons after removing them from the map
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    copied!<p>I am able to clear the polygons after 5 seconds passes once the tiles are loaded on the map, but when I try to build the polygons again the polygons are being generated by the original data. I would like to use the new data set.</p> <p>What am I doing wrong?</p> <p>Sorry for so many questions. I am having lots of fun learning the API.</p> <p>Thank you in advance.</p> <pre><code> var map; function initialize() { var kansas_city = new google.maps.LatLng(39.316858,-94.963194); var mapOptions = { zoom: 13, center: kansas_city, mapTypeId: google.maps.MapTypeId.TERRAIN }; map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions); google.maps.event.addListener(map, 'tilesloaded', function() { setTimeout(function() { removeSectors() }, 3000); setTimeout(function() { updateMap() }, 4000); }); } function removeSectors() { if ( allPolygons ) { for ( i = 0; i &lt; allPolygons.length; i++ ) { allPolygons[i].setMap(null); } allPolygons.length = 0; } } var data; var xhr = new XMLHttpRequest(); xhr.open('GET', 'json_template.json', true); xhr.onload = function() { data = JSON.parse(xhr.responseText) sector_callback(data); }; xhr.send(); function updateMap() { var data; var xhr = new XMLHttpRequest(); xhr.open('GET', 'json_template1.json', true); xhr.onload = function() { data = JSON.parse(xhr.responseText) sector_callback(data); }; xhr.send(); } function createClickablePoly(poly, html) { google.maps.event.addListener(poly, 'click', function(evt) { infowindow.setContent(html); infowindow.setPosition(evt.latLng); infowindow.open(map); }); } var infowindow = new google.maps.InfoWindow({}); function sector_callback() { var bounds = new google.maps.LatLngBounds(); for (var i = 0, len = data.features.length; i &lt; len; i++) { var coords = data.features[i].geometry.coordinates[0]; siteNames = data.features[i].properties.Name; // added for site names var path = []; for ( var j = 0, len2 = coords.length; j &lt; len2; j++ ){ // pull out each set of coords and create a map object var pt = new google.maps.LatLng(coords[j][1], coords[j][0]) bounds.extend(pt); path.push(pt); } var polygons = new google.maps.Polygon({ path: path, strokeColor: "#000000", strokeOpacity: 0.8, strokeWeight: 1, fillColor: "#000000", fillOpacity: 0.35, map: map }); createClickablePoly(polygons, siteNames); //console.debug(siteNames); google.maps.event.addListener(polygons, 'mouseover', function() { var currentPolygon = this; currentPolygon.setOptions({ fillOpacity: 0.45, fillColor: "#FF0000" }) }); google.maps.event.addListener(polygons, 'mouseout', function() { var currentPolygon = this; currentPolygon.setOptions({ fillOpacity: 0.35, fillColor: "#000000" }) }); allPolygons.push(polygons); } } var allPolygons = []; </code></pre>
 

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