How to add values in google map v3 - google-maps

Question

I have searched in google but i couldn't get it. I need this type where values to be in markers
I tried something but i didn't get the result
var locations = [
[33.906896, -6.263123, 20],
[34.053993, -6.792237, 30],
[33.994469, -6.848702, 40],
[33.587596, -7.657156, 50],
[33.531808, -7.674601, 8],
[33.58824, -7.673278, 12],
[33.542325, -7.578557, 15]
];
var mapOptions = {
zoom: 4,
center: new google.maps.LatLng(28.975750, 10.669184),
mapTypeId: google.maps.MapTypeId.SATELLITE
};
var marker, i;
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][0], locations[i][1]),
icon: 'icon.png' + locations[i][2]
map: map
});
}

Answer 1

You cannot do that. A marker with label can only show 1 character. But you can create the marker icon on the fly in code. Here is a rough example :
function createMarker(width, height, title) {
var canvas, context, radius = 4;
canvas = document.createElement("canvas");
canvas.width = width;
canvas.height = height;
context = canvas.getContext("2d");
context.clearRect(0, 0, width, height);
context.fillStyle = "rgb(0,191,255)";
context.strokeStyle = "rgb(0,0,0)";
context.beginPath();
context.moveTo(radius, 0);
context.lineTo(width - radius, 0);
context.quadraticCurveTo(width, 0, width, radius);
context.lineTo(width, height - radius);
context.quadraticCurveTo(width, height, width - radius, height);
context.lineTo(radius, height);
context.quadraticCurveTo(0, height, 0, height - radius);
context.lineTo(0, radius);
context.quadraticCurveTo(0, 0, radius, 0);
context.closePath();
context.fill();
context.stroke();
context.font = "bold 10pt Arial"
context.textAlign = "center";
context.fillStyle = "rgb(255,255,255)";
context.fillText(title, 15, 15);
return canvas.toDataURL();
}
and when you place the markers :
var marker, i;
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][0], locations[i][1]),
icon: createMarker(30, 20, '$' + locations[i][2].toString()),
map: map,
});
}
demo -> http://jsfiddle.net/cfbh9va8/
As said this is a rough demonstration, showing the technique. I am sure there is a lot of examples drawing a canvas with arrow and so on, or perhaps you can easily do this yourself. My graphical skills are not that good :)