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I want to draw a pie charts on several locations in a Google Map. Is there a way to draw a google pie chart in a particular location in a Google Map to represent a data set (like population in a particular location/town)?
I came up with a solution and below displays the code that I wrote to display a pie chart icon in a particular location. I have some other requirement to add event listener to the pi chart icon to display a window with more detailed pie chart. I came up with the code below as a solution for this requirements, but it does not display the window when the icon is clicked. Can you please help to find the issue here?
<html>
<head>
<link href="http://code.google.com//apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css">
<script src="https://maps.googleapis.com/maps/api/js?v=3.10&sensor=false&.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi?.js"></script>
<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
google.load( 'visualization', '1', { packages:['corechart'] });
function drawChart(marker, data) {
var options = {'title':'Perception Analysis '+
marker.getPosition().toString(),
'width':400,
'height':150};
var node = document.createElement('div'),
infoWindow = new google.maps.InfoWindow(),
chart = new google.visualization.PieChart(node);
chart.draw(data, options);
infoWindow.setContent(node);
infoWindow.open(marker.getMap(),marker);
}
function ChartMarker( options ) {
this.setValues( options );
this.$inner = $('<div>').css({
position: 'relative',
left: '-50%', top: '-50%',
width: options.width,
height: options.height,
fontSize: '1px',
lineHeight: '1px',
padding: '2px',
backgroundColor: 'transparent',
cursor: 'default'
});
this.$div = $('<div>')
.append( this.$inner )
.css({
position: 'absolute',
display: 'none'
});
};
ChartMarker.prototype = new google.maps.OverlayView;
ChartMarker.prototype.onAdd = function() {
$( this.getPanes().overlayMouseTarget ).append( this.$div );
};
ChartMarker.prototype.onRemove = function() {
this.$div.remove();
};
ChartMarker.prototype.draw = function() {
var marker = this;
var projection = this.getProjection();
var position = projection.fromLatLngToDivPixel( this.get('position') );
this.$div.css({
left: position.x,
top: position.y,
display: 'block'
})
this.$inner
.html( '<img src="' + this.get('image') + '"/>' )
.click( function( event ) {
var events = marker.get('events');
events && events.click( event );
});
this.chart = new google.visualization.PieChart( this.$inner[0] );
this.chart.draw( this.get('chartData'), this.get('chartOptions') );
};
function initialize() {
var latLng = new google.maps.LatLng( 40.708762, -74.006731 );
var mapOptions = {
center: latLng,
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
mapOptions);
var data = google.visualization.arrayToDataTable([
[ 'Task', 'Hours per Day' ],
[ 'Work', 11 ],
[ 'Eat', 2 ],
[ 'Commute', 2 ],
[ 'Watch TV', 2 ],
[ 'Sleep', 7 ]
]);
var options = {
fontSize: 8,
backgroundColor: 'transparent',
legend: {position: 'none'}
};
var marker = new ChartMarker({
map: map,
position: latLng,
width: '250px',
height: '100px',
chartData: data,
chartOptions: options,
events: {
click: function( event ) {
drawChart(this,data)
}
}
});
};
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width: 900px; height: 500px;"></div>
</body>
</html>
375
If you're talking about a pie chart drawn with the Visualization API, you could use a custom HTML overlay like the one in this fiddle:
google.load( 'visualization', '1', { packages:['corechart'] });
function ChartMarker( options ) {
this.setValues( options );
this.$inner = $('<div>').css({
position: 'relative',
left: '-50%', top: '-50%',
width: options.width,
height: options.height,
fontSize: '1px',
lineHeight: '1px',
border: '1px solid #888',
padding: '2px',
backgroundColor: 'white',
cursor: 'default'
});
this.$div = $('<div>')
.append( this.$inner )
.css({
position: 'absolute',
display: 'none'
});
};
ChartMarker.prototype = new google.maps.OverlayView;
ChartMarker.prototype.onAdd = function() {
$( this.getPanes().overlayMouseTarget ).append( this.$div );
};
ChartMarker.prototype.onRemove = function() {
this.$div.remove();
};
ChartMarker.prototype.draw = function() {
var marker = this;
var projection = this.getProjection();
var position = projection.fromLatLngToDivPixel( this.get('position') );
this.$div.css({
left: position.x,
top: position.y,
display: 'block'
})
this.$inner
.html( '<img src="' + this.get('image') + '"/>' )
.click( function( event ) {
var events = marker.get('events');
events && events.click( event );
});
this.chart = new google.visualization.PieChart( this.$inner[0] );
this.chart.draw( this.get('chartData'), this.get('chartOptions') );
};
function initialize() {
var latLng = new google.maps.LatLng( 40.708762, -74.006731 );
var map = new google.maps.Map( $('#map_canvas')[0], {
zoom: 15,
center: latLng,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var data = google.visualization.arrayToDataTable([
[ 'Task', 'Hours per Day' ],
[ 'Work', 11 ],
[ 'Eat', 2 ],
[ 'Commute', 2 ],
[ 'Watch TV', 2 ],
[ 'Sleep', 7 ]
]);
var options = {
title: 'My Daily Activities',
fontSize: 8
};
var marker = new ChartMarker({
map: map,
position: latLng,
width: '250px',
height: '100px',
chartData: data,
chartOptions: options,
events: {
click: function( event ) {
alert( 'Clicked marker' );
}
}
});
};
$( initialize );
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