forked from danvk/dygraphs
/
custom-circles.html
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custom-circles.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
<title>Custom Circles</title>
<!--[if IE]>
<script type="text/javascript" src="../excanvas.js"></script>
<![endif]-->
<!--
For production (minified) code, use:
<script type="text/javascript" src="dygraph-combined.js"></script>
-->
<script type="text/javascript" src="../dygraph-dev.js"></script>
</head>
<body>
<h2>Custom circles and hover circles</h2>
<script type="text/javascript">
// Simple version
var div = document.createElement('div');
document.body.appendChild(div);
var data = 'x,A,B\n' +
'1,1,2\n' +
'2,2,4\n' +
'3,3,6\n' +
'4,4,8\n' +
'5,5,7\n';
var g = new Dygraph(div, data, {
drawPoints : true,
pointSize : 5,
highlightCircleSize: 8,
series : {
A : {
drawPointCallback : Dygraph.Circles.TRIANGLE,
drawHighlightPointCallback : Dygraph.Circles.TRIANGLE
},
B : {
drawPointCallback : Dygraph.Circles.HEXAGON,
drawHighlightPointCallback : Dygraph.Circles.HEXAGON
}
}
});
// Fancy demos
var smile = function(g, series, ctx, cx, cy, color, radius) {
mouthlessFace(g, series, ctx, cx, cy, color, radius);
ctx.fillStyle = "#000000";
ctx.beginPath();
ctx.arc(cx, cy, radius - 2, .3, Math.PI - .3, false);
ctx.stroke();
};
var frown = function(g, series, ctx, cx, cy, color, radius) {
mouthlessFace(g, series, ctx, cx, cy, color, radius);
ctx.lineWidth = 1;
ctx.fillStyle = "#000000";
ctx.beginPath();
ctx.arc(cx, cy + radius, radius - 2, Math.PI + .3, -.3, false);
ctx.stroke();
};
var mouthlessFace = function(g, series, ctx, cx, cy, color, radius) {
ctx.lineWidth = 1;
ctx.strokeStyle = "#000000";
ctx.fillStyle = "#FFFF00";
ctx.beginPath();
ctx.arc(cx, cy, radius, Math.PI * 2, false);
ctx.closePath();
ctx.stroke();
ctx.fill();
ctx.fillStyle = "#000000";
ctx.beginPath();
ctx.arc(cx - (radius / 3) , cy - (radius / 4), 1, Math.PI * 2, false);
ctx.closePath();
ctx.stroke();
ctx.fill();
ctx.beginPath();
ctx.arc(cx + (radius / 3) , cy - (radius / 4), 1, Math.PI * 2, false);
ctx.closePath();
ctx.stroke();
ctx.fill();
};
var makeGraph = function(title, yFunc, extraOpts) {
var opts = {
drawPoints : true,
pointSize : 5
};
var shapes = [];
var addShape = function(name, pointFn, highlightPointFn) {
shapes.push(name);
opts[name] = {
drawPointCallback: pointFn,
drawHighlightPointCallback: highlightPointFn
};
};
for (var shape in Dygraph.Circles) {
if (!Dygraph.Circles.hasOwnProperty(shape)) continue;
var fn = Dygraph.Circles[shape];
if (typeof fn !== 'function') continue;
addShape(shape.toLowerCase(), fn, fn);
};
addShape('custom', frown, smile);
for (var key in extraOpts) {
if (extraOpts.hasOwnProperty(key)) {
opts[key] = extraOpts[key];
}
};
var header = document.createElement('h3');
header.appendChild(document.createTextNode(title));
document.body.appendChild(header);
var div = document.createElement('div');
document.body.appendChild(div);
var g = new Dygraph(
div,
function() {
var r = "xval," + shapes.join(',') + "\n";
var n = shapes.length;
for (var i=1; i<=20; i++) {
r += i;
for (var j = 0; j < n; j++) {
r += "," + yFunc(i, j, n);
}
r += "\n";
}
return r;
}, opts);
};
makeGraph(
"Gallery of predefined shapes, adding a custom shape:",
function(x, c, n) {
return x / 3 + c * 10;
}, {
highlightCircleSize : 8
});
makeGraph(
"With interactive per-series highlighting:",
function(x, c, n) {
return Math.sin(x * c / n);
}, {
strokeBorderWidth: 2,
highlightSeriesOpts: {
pointSize: 6,
highlightCircleSize: 10,
strokeWidth: 2,
}});
</script>
</body>
</html>