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Date Ticks
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?1.25.0"></script> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.time.js?1.25.0"></script> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var format = d3.time.format("%m/%d"), | |
| t0 = new Date(2010, 0, 1), | |
| t1 = new Date(2010, 0, Math.floor(Math.random() * 21) + 10), | |
| delay = 3000; | |
| var w = 960, | |
| h = 500, | |
| x0 = d3.scale.linear().domain([t0, t1]).range([0, w]), | |
| x1 = d3.scale.linear().domain([t0, t1]).range([0, w]); | |
| var svg = d3.select("body").append("svg:svg") | |
| .attr("width", w) | |
| .attr("height", h); | |
| redraw(); | |
| setInterval(redraw, delay); | |
| function redraw() { | |
| x1.domain([t0, t1 = new Date(2010, 0, Math.floor(Math.random() * 21) + 10)]); | |
| var tick = svg.selectAll("g.tick") | |
| .data(days(x1.domain()), Number); | |
| var tickEnter = tick.enter().append("svg:g") | |
| .attr("class", "tick") | |
| .attr("transform", function(d) { return "translate(" + x0(d) + "," + (h / 2) + ")"; }) | |
| .style("opacity", 1e-6); | |
| tickEnter.append("svg:line") | |
| .attr("y1", -10) | |
| .style("stroke", "#000") | |
| .style("stroke-width", "1.5px"); | |
| tickEnter.append("svg:text") | |
| .attr("y", 6) | |
| .attr("dy", ".71em") | |
| .attr("text-anchor", "middle") | |
| .style("font", "10px sans-serif") | |
| .text(format); | |
| tickEnter.transition() | |
| .duration(delay) | |
| .attr("transform", function(d) { return "translate(" + x1(d) + "," + (h / 2) + ")"; }) | |
| .style("opacity", 1); | |
| tick.transition() | |
| .duration(delay) | |
| .attr("transform", function(d) { return "translate(" + x1(d) + "," + (h / 2) + ")"; }) | |
| .style("opacity", 1); | |
| tick.exit().transition() | |
| .duration(delay) | |
| .attr("transform", function(d) { return "translate(" + x1(d) + "," + (h / 2) + ")"; }) | |
| .style("opacity", 1e-6) | |
| .remove(); | |
| x0.domain([t0, t1]); | |
| } | |
| function days(domain) { | |
| var d0 = domain[0], | |
| d1 = domain[1], | |
| dz = []; | |
| d0 += 864e5 - (d0 % 864e5 || 864e5); | |
| while (d0 <= d1) { | |
| dz.push(new Date(d0)); | |
| d0 += 864e5; | |
| } | |
| return dz; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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