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Animated Line Graphs / Sparklines using SVG Path and d3.js
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<html> | |
<head> | |
<title>Animated Sparkline using SVG Path and d3.js</title> | |
<script src="https://raw.github.com/mbostock/d3/master/d3.js"></script> | |
<style> | |
/* tell the SVG path to be a thin blue line without any area fill */ | |
path { | |
stroke: steelblue; | |
stroke-width: 1; | |
fill: none; | |
} | |
</style> | |
</head> | |
<body> | |
<p> | |
<b>Size:</b> 300x30 <b>Interpolation:</b> basis <b>Animation:</b> true <b>Transition:</b> 1000ms <b>Update Frequency:</b> 1000ms | |
<div id="graph1" class="aGraph" style="width:600px; height:200px;"></div> | |
</p> | |
<script> | |
function displayGraphExample(id, width, height, interpolation, animate, updateDelay, transitionDelay) { | |
var graph = d3.select(id).append("svg:svg").attr("width", "100%").attr("height", "100%"); | |
var data = [3, 6, 2, 7, 5, 2, 1, 3, 8, 9, 2, 5, 9, 3, 6, 3, 6, 2, 7, 5, 2, 1, 3, 8, 9, 2, 5, 9, 2, 7, 5, 2, 1, 3, 8, 9, 2, 5, 9, 3, 6, 2, 7, 5, 2, 1, 3, 8, 9, 2, 9]; | |
var x = d3.scale.linear().domain([0, 48]).range([-5, width]); | |
var y = d3.scale.linear().domain([0, 10]).range([0, height]); | |
var line = d3.svg.line() | |
.x(function(d,i) { | |
return x(i); | |
}) | |
.y(function(d) { | |
return y(d); | |
}) | |
.interpolate(interpolation) | |
graph.append("svg:path").attr("d", line(data)); | |
xruler = graph.selectAll("g.rulers") | |
.data(data) | |
.enter().append("svg:g") | |
.attr("transform", function(d, i) { return "translate(" + x(i) + "," + height + ")rotate(-90)"; }) | |
xruler.append("svg:text") | |
.attr("class", "datums") | |
.attr("dy", "1.5em") | |
// .attr("x", function(d, i) { return x(i); }) | |
.text(function(d) { return d; }) | |
.style("text-anchor", "end") | |
.style("stroke", "black") | |
// .style("display", function(d, i) { return i % 12 ? "none" : null }) //|| i == 0 | |
// .attr("transform", function() { return "rotate(-90)"; }); | |
function redrawWithAnimation() { | |
graph.selectAll("path") | |
.data([data]) | |
.attr("transform", "translate(" + x(1) + ")") | |
.attr("d", line) | |
.transition() | |
.ease("linear") | |
.duration(transitionDelay) | |
.attr("transform", "translate(" + x(0) + ")"); | |
xruler.select("text") | |
.data(data) | |
.attr("transform", "translate(0," + x(1) + ")") | |
// .attr("transform", function() { return "rotate(-90)"; }) | |
.text(function(d) { return d; }) | |
.transition() | |
.ease("linear") | |
.duration(transitionDelay) | |
// .attr("transform", function() { return "rotate(-90)"; }) | |
.attr("transform", "translate(0," + x(0) + ")") | |
} | |
function redrawWithoutAnimation() { | |
graph.selectAll("path") | |
.data([data]) | |
.attr("d", line); | |
} | |
setInterval(function() { | |
var v = data.shift(); | |
data.push(v); | |
if(animate) { | |
redrawWithAnimation(); | |
} else { | |
redrawWithoutAnimation(); | |
} | |
}, updateDelay); | |
} | |
displayGraphExample("#graph1", 600, 30, "basis", true, 1000, 1000); | |
</script> | |
</body> | |
</html> |
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