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simple d3 barchart
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { | |
| margin:0; | |
| position:fixed; | |
| top:0;right:0;bottom:0;left:0; | |
| } | |
| .bars { | |
| fill: #ff28b4; | |
| } | |
| text.label { | |
| text-anchor: middle; | |
| font-size: 0.8em; | |
| fill: #9954aa; | |
| font-family: "monospace"; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| // Feel free to change or delete any of the code you see in this editor! | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", 960) | |
| .attr("height", 500) | |
| .attr('transform', 'translate(50,50)') | |
| // svg.append("text") | |
| // .text("Edit the code below to change me!") | |
| // .attr("y", 200) | |
| // .attr("x", 120) | |
| // .attr("font-size", 36) | |
| // .attr("font-family", "monospace"); | |
| var height = 300; | |
| var width = 400; | |
| // data | |
| var data = [ | |
| {key: "a", value: 20}, | |
| {key: "b", value: 30}, | |
| {key: "c", value: 550}, | |
| {key: "d", value: 200}, | |
| {key: "e", value: 50} | |
| ]; | |
| var yMax = d3.max(data, function(d){return d.value}); | |
| console.log(yMax) | |
| var y = d3.scaleLinear() | |
| .domain([0, yMax *1.15]) | |
| .range([height, 0]); | |
| var xValues = data.map(function(d){ | |
| return d.key | |
| }); | |
| console.log(xValues); | |
| var x = d3.scaleBand() | |
| .domain(xValues) | |
| .rangeRound([0, width]) | |
| .paddingInner(0.2) | |
| .paddingOuter(0.2); | |
| svg | |
| .append('g') | |
| .selectAll('.bars') | |
| .data(data) | |
| .enter() | |
| .append('rect') | |
| .attr('class','bars') | |
| .attr('height', function(d){ | |
| return height - y(d.value) | |
| }) | |
| .attr('width', x.bandwidth()) | |
| .attr('x', function(d){return x(d.key)}) | |
| .attr('y', function(d){ | |
| return y(d.value) | |
| }); | |
| //.attr('color', '#000088') | |
| var xAxis = d3.axisBottom() | |
| .scale(x); | |
| svg.append('g') | |
| .attr('transform', 'translate(0,' + height + ')') | |
| .call(xAxis) | |
| var yAxis = d3.axisRight() | |
| .scale(y); | |
| svg.append('g') | |
| .attr('transform', 'translate(5,0)') | |
| .call(yAxis) | |
| svg | |
| .selectAll(".label") | |
| .data(data) | |
| .enter() | |
| .append('text') | |
| .attr('class', 'label') | |
| .attr('dx', function(d) { | |
| return x(d.key) + x.bandwidth()/2 | |
| }) | |
| .attr('dy', function(d) {return y(d.value) - 5}) | |
| .text(function(d){ return d.value}) | |
| </script> | |
| </body> |
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