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slider: days of the year
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| <!-- Bostock's slider brush: http://bl.ocks.org/mbostock/6452972--> | |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <link href='http://fonts.googleapis.com/css?family=Raleway' rel='stylesheet' type='text/css'> | |
| <link rel="stylesheet" href="slider.css"> | |
| </head> | |
| <body> | |
| <p>Adapted from Bostock's <a href="http://bl.ocks.org/mbostock/6452972">slider example</a></p> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="slider.js"></script> | |
| </body> |
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| body { | |
| background-color: #393939; | |
| font-size: 14px; | |
| font-family: 'Raleway', sans-serif; | |
| } | |
| p { | |
| color: white; | |
| margin: 50px; | |
| } | |
| a { | |
| color: #4FDEF2; | |
| } | |
| .axis { | |
| fill: gray; | |
| -webkit-user-select: none; | |
| -moz-user-select: none; | |
| user-select: none; | |
| } | |
| .axis .halo { | |
| stroke: gray; | |
| stroke-width: 4px; | |
| stroke-linecap: round; | |
| } | |
| .slider .handle path { | |
| stroke: white; | |
| stroke-width: 3px; | |
| stroke-linecap: round; | |
| pointer-events: none; | |
| } | |
| .slider .handle text { | |
| fill: white; | |
| text-align: center; | |
| font-size: 18px; | |
| } |
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| formatDate = d3.time.format("%b %d"); | |
| // parameters | |
| var margin = { | |
| top: 50, | |
| right: 50, | |
| bottom: 50, | |
| left: 50 | |
| }, | |
| width = 960 - margin.left - margin.right, | |
| height = 300 - margin.bottom - margin.top; | |
| // scale function | |
| var timeScale = d3.time.scale() | |
| .domain([new Date('2012-01-02'), new Date('2013-01-01')]) | |
| .range([0, width]) | |
| .clamp(true); | |
| // initial value | |
| var startValue = timeScale(new Date('2012-03-20')); | |
| startingValue = new Date('2012-03-20'); | |
| ////////// | |
| // defines brush | |
| var brush = d3.svg.brush() | |
| .x(timeScale) | |
| .extent([startingValue, startingValue]) | |
| .on("brush", brushed); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| // classic transform to position g | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| // put in middle of screen | |
| .attr("transform", "translate(0," + height / 2 + ")") | |
| // inroduce axis | |
| .call(d3.svg.axis() | |
| .scale(timeScale) | |
| .orient("bottom") | |
| .tickFormat(function(d) { | |
| return formatDate(d); | |
| }) | |
| .tickSize(0) | |
| .tickPadding(12) | |
| .tickValues([timeScale.domain()[0], timeScale.domain()[1]])) | |
| .select(".domain") | |
| .select(function() { | |
| console.log(this); | |
| return this.parentNode.appendChild(this.cloneNode(true)); | |
| }) | |
| .attr("class", "halo"); | |
| var slider = svg.append("g") | |
| .attr("class", "slider") | |
| .call(brush); | |
| slider.selectAll(".extent,.resize") | |
| .remove(); | |
| slider.select(".background") | |
| .attr("height", height); | |
| var handle = slider.append("g") | |
| .attr("class", "handle") | |
| handle.append("path") | |
| .attr("transform", "translate(0," + height / 2 + ")") | |
| .attr("d", "M 0 -20 V 20") | |
| handle.append('text') | |
| .text(startingValue) | |
| .attr("transform", "translate(" + (-18) + " ," + (height / 2 - 25) + ")"); | |
| slider | |
| .call(brush.event) | |
| function brushed() { | |
| var value = brush.extent()[0]; | |
| if (d3.event.sourceEvent) { // not a programmatic event | |
| value = timeScale.invert(d3.mouse(this)[0]); | |
| brush.extent([value, value]); | |
| } | |
| handle.attr("transform", "translate(" + timeScale(value) + ",0)"); | |
| handle.select('text').text(formatDate(value)); | |
| } |
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