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Bar Chart
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| license: mit |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Simple Bar Chart</title> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> | |
| <meta charset='utf-8' /> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { | |
| font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
| } | |
| #chart { | |
| max-width: 600px; | |
| max-height: 400px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="chart"></div> | |
| <script src="script.js"></script> | |
| <script> | |
| var bars = barChart(); | |
| var data = [ | |
| { label: "age_lt_5", value: "2888" }, | |
| { label: "age_5_9", value: "1852" }, | |
| { label: "age_10_14", value: "1595" }, | |
| { label: "age_15_17", value: "1030" }, | |
| { label: "age_18_19", value: "741" }, | |
| { label: "age_20_24", value: "4497" }, | |
| { label: "age_25_29", value: "7871" }, | |
| { label: "age_30_34", value: "7090" }, | |
| { label: "age_35_39", value: "5313" }, | |
| { label: "age_40_44", value: "4527" }, | |
| { label: "age_45_49", value: "3968" }, | |
| { label: "age_50_54", value: "3668" }, | |
| { label: "age_55_59", value: "3093" }, | |
| { label: "age_60_64", value: "2390" }, | |
| { label: "age_65_69", value: "1659" }, | |
| { label: "age_70_74", value: "1347" }, | |
| { label: "age_75_79", value: "1037" }, | |
| { label: "age_80_84", value: "844" }, | |
| { label: "age_gte_85", value: "952" } | |
| ]; | |
| function resize() { | |
| if (d3.select("#chart svg").empty()) { | |
| return; | |
| } | |
| bars.width(+d3.select("#chart").style("width").replace(/(px)/g, "")) | |
| .height(+d3.select("#chart").style("height").replace(/(px)/g, "")); | |
| d3.select("#chart").call(bars); | |
| } | |
| document.addEventListener("DOMContentLoaded", function () { | |
| d3.select("#chart").datum(data).call(bars); | |
| d3.select(window).on('resize', resize); | |
| resize(); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| function barChart() { | |
| var margin = {top: 10, right: 10, bottom: 60, left: 40}, | |
| width = 350, | |
| height = 350, | |
| labelValue = function(d) { | |
| return d.label.substr(4) | |
| .replace(/(lt_)/g, "<") | |
| .replace(/(gte_)/g, ">=") | |
| .replace(/_/g, "-"); | |
| }, | |
| dataValue = function(d) { return +d.value; }, | |
| bandPadding = 0.1, | |
| color = "#b2ebf2"; | |
| function chart(selection) { | |
| selection.each(function(data) { | |
| data = data.map(function(d, i) { | |
| return { label: labelValue(d), value: dataValue(d) }; | |
| }); | |
| var x = d3.scaleBand().rangeRound([0, height-margin.top-margin.bottom]).padding(bandPadding), | |
| y = d3.scaleLinear().rangeRound([0, width-margin.left-margin.right]); | |
| x.domain(data.map(function(d) { return d.label; })); | |
| y.domain([0, d3.max(data, dataValue)]); | |
| var svg = d3.select(this).selectAll("svg").data([data]); | |
| var gEnter = svg.enter().append("svg").append("g"); | |
| gEnter.append("g").attr("class", "axis x"); | |
| gEnter.append("g").attr("class", "axis y").append("text"); | |
| gEnter.selectAll(".bar").data(data).enter().append("rect").attr("class", "bar"); | |
| var svg = selection.select("svg"); | |
| svg.attr('width', width).attr('height', height); | |
| var g = svg.select("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| g.select("g.axis.x") | |
| .call(d3.axisLeft(x)); | |
| g.select("g.axis.y") | |
| .attr("class", "axis y") | |
| .attr("transform", "translate(0," + (height - margin.bottom - margin.top) + ")") | |
| .call(d3.axisBottom(y).ticks(5)); | |
| g.select("g.axis.y text") | |
| .attr("transform", "rotate(-90)") | |
| .attr("y", 6) | |
| .attr("dy", "0.71em") | |
| .attr("text-anchor", "end") | |
| .text("Population"); | |
| g.selectAll("rect.bar") | |
| .data(data) | |
| .attr("x", "1") | |
| .attr("y", function(d) { return x(d.label); }) | |
| .attr("fill", color) | |
| .attr("height", x.bandwidth()) | |
| .transition() | |
| .duration(750) | |
| .attr("width", function(d) { return y(dataValue(d)); }); | |
| }); | |
| } | |
| chart.margin = function(_) { | |
| if (!arguments.length) return margin; | |
| margin = _; | |
| return chart; | |
| }; | |
| chart.width = function(_) { | |
| if (!arguments.length) return width; | |
| width = _; | |
| return chart; | |
| }; | |
| chart.height = function(_) { | |
| if (!arguments.length) return height; | |
| height = _; | |
| return chart; | |
| }; | |
| chart.labelValue = function(_) { | |
| if (!arguments.length) return labelValue; | |
| labelValue = _; | |
| return chart; | |
| }; | |
| chart.dataValue = function(_) { | |
| if (!arguments.length) return dataValue; | |
| dataValue = _; | |
| return chart; | |
| }; | |
| chart.colorOptions = function(_) { | |
| if (!arguments.length) return colorOptions; | |
| colorOptions = _; | |
| return chart; | |
| }; | |
| return chart; | |
| } |
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