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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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