mapv
Version:
a library of geography visualization
86 lines (67 loc) • 1.99 kB
HTML
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
}
#canvas {
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script type="text/javascript" src="../build/mapv.js"></script>
<script type="text/javascript">
var canvas = document.querySelector('#canvas');
canvas.width = document.body.offsetWidth;
canvas.height = document.body.offsetHeight;
var ctx = canvas.getContext('2d');
mapv.canvasResolutionScale(ctx);
var data = [];
var randomCount = parseInt(canvas.width * canvas.height / 2000);
while (randomCount--) {
data.push({
geometry: {
type: 'Point',
coordinates: [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]
},
count: Math.random() * 50
});
}
var options = {
fillStyle: 'rgba(55, 50, 250, 0.3)',
shadowColor: 'rgba(55, 50, 250, 0.3)',
globalCompositeOperation: 'lighter',
lineWidth: 0.5,
shadowBlur: 2,
max: 50,
gradient: {
0: 'lightblue',
1: 'blue'
},
offset: {
x: 20,
y: 20
},
draw: 'grid'
}
var dataSet = new mapv.DataSet(data);
mapv.canvasDrawGrid.draw(ctx, dataSet, options);
var options = {
fillStyle: 'rgba(255, 250, 50, 0.8)',
shadowColor: 'rgba(255, 250, 50, 0.8)',
shadowBlur: 10,
size: 2,
draw: 'simple'
}
mapv.canvasDrawSimple.draw(ctx, dataSet, options);
</script>
</body>
</html>