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xml_cluster.html
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xml_cluster.html
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<html>
<head>
<title>Clustered Features</title>
<script src="./js/jquery-1.12.1.min.js"></script>
<script src="./js/ol.js"></script>
<link rel="stylesheet" href="./css/ol.css" type="text/css">
<script>
var data;
var map;
var raster;
$(document).ready(function () {
raster = new ol.layer.Tile({
source: new ol.source.OSM()
});
map = new ol.Map({
layers: [raster],
target: 'map',
view: new ol.View({
center: ol.proj.transform([120.2167, 24.00], 'EPSG:4326', 'EPSG:3857'),
zoom: 7
})
});
map.on('click', function(evt) {
var feature = map.forEachFeatureAtPixel(evt.pixel, function(feature) { return feature; });
if(feature){
if(typeof feature.get('features') === 'undefined'){
// not a cluster
}else{
// is a cluster, so loop through all the underlying features
// Note even if cluster only contain 1 node, it's still cluster
var features = feature.get('features');
var str = "";
for(var i = 0; i < features.length; i++) {
// here you'll have access to your normal attributes:
//console.log(features[i].get('id')+" "+features[i].get('product')+" "+features[i].get('image'));
str += "<"+i+"> " + features[i].get('id')+" "+features[i].get('product')+" "+features[i].get('image') + "\n";
}
alert(str);
}
}
});
$("#send").click(function () {
$.ajax({type: "POST", dataType: "xml", url:"http://140.116.245.65/LLGIS_20171023/2.php",
data:{
date_from:20130315,date_to:20171006,
space_sel:"space_city",
city_column1:"臺南市",
city_column2:"",
city_column3:"",
Search_In_drawbox_LU_X:"120.60001",
Search_In_drawbox_LU_Y:"23.780000",
Search_In_drawbox_RD_X:"121.74001",
Search_In_drawbox_RD_Y:"22.740045"
},
success: function(response){
//console.log(response);
data = response;
draw_cluster(response);
},
error: function(e){
console.log(e.message);
}
});
});
});
function draw_cluster(xml) {
var $item = $(xml).find("row");
var features = new Array($item.length);
var i = 0;
$item.each(function() {
var coordinates = ol.proj.transform(parse_lnglat( $(this).attr("id") ), 'EPSG:4326', 'EPSG:3857');
features[i] = new ol.Feature({
id: $(this).attr("id"),
location: $(this).children("cell:nth-child(2)").text(),
product: $(this).children("cell:nth-child(3)").text(),
image: $(this).children("cell:nth-child(4)").text(),
time: $(this).children("cell:nth-child(9)").text()+" "+$(this).children("cell:nth-child(10)").text()+" "+$(this).children("cell:nth-child(11)").text(),
geometry: new ol.geom.Point(coordinates)
});
i++;
});
var source = new ol.source.Vector({
features: features
});
var distance = 50;
var clusterSource = new ol.source.Cluster({
distance: parseInt(distance, 10),
source: source
});
var styleCache = {};
var clusters = new ol.layer.Vector({
source: clusterSource,
style: function(feature) {
var size = feature.get('features').length;
var style = styleCache[size];
if (!style) {
style = new ol.style.Style({
image: new ol.style.Circle({
radius: 10,
stroke: new ol.style.Stroke({
color: '#fff'
}),
fill: new ol.style.Fill({
color: '#3399CC'
})
}),
text: new ol.style.Text({
text: size.toString(),
fill: new ol.style.Fill({
color: '#fff'
})
})
});
styleCache[size] = style;
}
return style;
}
});
map.addLayer(clusters);
}
function parse_lnglat(str){
var substr = str.split(";");
return [parseFloat(substr[1]), parseFloat(substr[0])];
}
</script>
</head>
<body>
<div>
<div id="map" class="map"></div>
<button style="position: absolute; bottom: 30px; right: 50px; height: 100px; width: 200px;" id="send">Send</button>
</div>
</body>
</html>