Radius for Google map not drawing from SQL - php

Question

I am trying to set a radius around my marker the radius is set in my SQL database and that radius should show around the marker this is my current code
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCh0MbGxFVti1rJkypMgs8548dN4wr6oKY"
type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
restaurant: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png'
},
bar: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png'
}
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(47.6145, -122.3418),
zoom: 13,
mapTypeId: google.maps.MapTypeId.HYBRID
});
var infoWindow = new google.maps.InfoWindow;
// Change this depending on the name of your PHP file
downloadUrl("<?php echo $url; ?>", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < markers.length; i++) {
var MSISDN = markers[i].getAttribute("lbs_msisdn");
var Time = markers[i].getAttribute("lbs_time");
var Radius = markers[i].getAttribute("distance");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
bounds.extend(point);
var html = "<b>" + MSISDN + "</b> <br/>" + Time;
// var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
// icon: icon.icon
});
var cirlcle = new google.maps.Circle({
strokeColor: "#00F",
strokeOpacity: 0.8,
strokeWeight: 1,
fillColor: "#00F",
fillOpacity: 0.10,
map: map,
center: point,
radius: 1*markers[i].getAttribute("distance")
});
bindInfoWindow(marker, map, infoWindow, html);
}
map.fitBounds(bounds);
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
function parseXml(str) {
if (window.ActiveXObject) {
var doc = new ActiveXObject('MicrosoftXMLDOM');
doc.loadXML(str);
return doc;
} else if (window.DOMParser) {
return (new DOMParser()).parseFromString(str, 'text/xml');
}
}
google.maps.event.addDomListener(window, "load", load);
</script>
I have updated the code with the multiply in it and still not receiving the circles around the marker

Answer 1

Your code generates a javascript error: InvalidValueError: setRadius: not a number, because the result of markers[i].getAttribute("distance") is a string, not a number. Use parseFloat, parseInt or multiply it by a number (1*markers[i].getAttribute("distance") to solve that.
Proof of concept fiddle
code snippet:
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(47.6145, -122.3418),
zoom: 13,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow;
// downloadUrl("SO_20160101.xml", function(data) {
var xml = parseXml(xmlData); // data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
var bounds = new google.maps.LatLngBounds();
var radius = 0;
for (var i = 0; i < markers.length; i++) {
var MSISDN = markers[i].getAttribute("lbs_msisdn");
var Time = markers[i].getAttribute("lbs_time");
var Radius = markers[i].getAttribute("distance");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
bounds.extend(point);
var html = "<b>" + MSISDN + "</b> <br/>" + Time;
var marker = new google.maps.Marker({
map: map,
position: point,
});
var circle = new google.maps.Circle({
strokeColor: "#00F",
strokeOpacity: 0.8,
strokeWeight: 1,
fillColor: "#00F",
fillOpacity: 0.10,
map: map,
center: point,
radius: 1 * markers[i].getAttribute("distance")
});
if (circle.getRadius() > radius) {
radius = circle.getRadius();
map.fitBounds(circle.getBounds());
}
bindInfoWindow(marker, map, infoWindow, html);
}
// map.fitBounds(bounds);
// });
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function parseXml(str) {
if (window.ActiveXObject) {
var doc = new ActiveXObject('MicrosoftXMLDOM');
doc.loadXML(str);
return doc;
} else if (window.DOMParser) {
return (new DOMParser()).parseFromString(str, 'text/xml');
}
}
google.maps.event.addDomListener(window, "load", load);
var xmlData = '<markers><marker lbs_msisdn="27827910119" lbs_time="15:09:32" lat="-26.0" lng="28.0" distance="300"/><marker lbs_msisdn="27827910119" lbs_time="19:07:32" lat="-26.2726" lng="28.2179" distance="1206"/><marker lbs_msisdn="27827910119" lbs_time="19:08:56" lat="-26.2726" lng="28.2179" distance="1206"/><marker lbs_msisdn="27827910119" lbs_time="19:21:29" lat="-26.2726" lng="28.2179" distance="1206"/><marker lbs_msisdn="27827910119" lbs_time="21:58:13" lat="-26.2615" lng="28.2037" distance="148"/><marker lbs_msisdn="27827910119" lbs_time="22:01:43" lat="-26.2615" lng="28.2037" v="148"/><marker lbs_msisdn="27827910119" lbs_time="22:02:07" lat="-26.2615" lng="28.2037" distance="148"/><marker lbs_msisdn="27827910119" lbs_time="22:02:42" lat="-26.2615" lng="28.2037" distance="148"/><marker lbs_msisdn="27827910119" lbs_time="22:13:15" lat="-26.2615" lng="28.2037" distance="148"/><marker lbs_msisdn="27827910119" lbs_time="20:19:30" lat="-26.2615" lng="28.2037" distance="148"/></markers>';
html,
body,
#map {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>