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forked from sierra073's block: animated bar chart with labels
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October 12, 2018 22:11
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animated bar chart with labels
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font: 12px Lato; | |
| } | |
| .axis path, | |
| .axis line{ | |
| fill: none; | |
| stroke: #898989; | |
| shape-rendering: crispEdges; | |
| } | |
| .x.axis { | |
| font-size: 14px; | |
| font-weight: 150; | |
| } | |
| .y.axis { | |
| display: none; | |
| } | |
| svg text.label { | |
| font-weight: 400; | |
| text-anchor: start; | |
| text-align: center; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var margin = {top: 40, right: 30, bottom: 30, left: 50}, | |
| width = 460 - margin.left - margin.right, | |
| height = 320 - margin.top - margin.bottom; | |
| var formatPercent = d3.format(".0%"); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| var x = d3.scaleBand() | |
| .range([0, width]) | |
| .padding(0.4); | |
| var y = d3.scaleLinear() | |
| .range([height, 0]); | |
| var xAxis = d3.axisBottom(x).tickSize([]).tickPadding(10); | |
| var yAxis = d3.axisLeft(y).tickFormat(formatPercent); | |
| var dataset = [{"year":"2015", "value": .77}, | |
| {"year":"2016", "value": .88}, | |
| {"year":"2017", "value": .95}, | |
| {"year":"2018", "value": .98}]; | |
| x.domain(dataset.map(function(d) { return d.year; })); | |
| y.domain([0, d3.max(dataset, function(d) { return d.value; })]); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .style("stroke", "#898989") | |
| .style("fill-opacity", .9) | |
| .style("stroke-width", ".7") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("g") | |
| .attr("class","y axis") | |
| .attr("class","y axis") | |
| .call(yAxis); | |
| // svg.append("text") | |
| // .attr("transform", "rotate(-90)") | |
| // .attr("y", 0 - margin.left) | |
| // .attr("x",0 - (height / 2)) | |
| // .attr("dy", "1em") | |
| // .attr("fill","#898989") | |
| // .style("text-anchor", "middle") | |
| // .text("% Districts Meeting 100 kbps/student"); | |
| svg.selectAll(".bar") | |
| .data(dataset) | |
| .enter().append("rect") | |
| .attr("class", "bar") | |
| .style("display", function(d) { return d.value === null ? "none" : null; }) | |
| .style("fill", function(d){ | |
| if (d.year == "2018") { | |
| return "#f26c23"; | |
| } else { | |
| return "#fbdbca"; | |
| }}) | |
| .attr("x", function(d) { return x(d.year); }) | |
| .attr("width", x.bandwidth()) | |
| .attr("y", function(d) { return height; }) | |
| .attr("height", 0) | |
| .transition() | |
| .duration(600) | |
| .delay(function (d, i) { | |
| return i * 150; | |
| }) | |
| .attr("y", function(d) { return y(d.value); }) | |
| .attr("height", function(d) { return height - y(d.value); }); | |
| svg.selectAll(".label") | |
| .data(dataset) | |
| .enter() | |
| .append("text") | |
| .attr("class","label") | |
| .style("display", function(d) { return d.value === null ? "none" : null; }) | |
| .attr("x", (function(d) { | |
| return x(d.year) + (x.bandwidth() / 2) -8 ; | |
| })) | |
| .style("fill", function(d){ | |
| if (d.year == "2018") { | |
| return "#f26c23"; | |
| } else { | |
| return "#898989"; | |
| }}) | |
| .style("font", function(d){ | |
| if (d.year == "2018") { | |
| return "16px Lato"; | |
| }}) | |
| .attr("y", function(d) { return height; }) | |
| .attr("height", 0) | |
| .transition() | |
| .duration(600) | |
| .delay(function (d, i) { | |
| return i * 150; | |
| }) | |
| .text(function(d) { return formatPercent(d.value); }) | |
| .attr("y", function(d) { return y(d.value) + .1; }) | |
| .attr("dy", "-.7em"); | |
| </script> | |
| </body> |
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