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See version 2 for an example with a legend and updateable bands
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June 28, 2017 14:02
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Horizon bar chart
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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 { | |
| font-family: sans-serif; | |
| margin: 0; | |
| top: 0; | |
| right: 0; | |
| bottom: 0; | |
| left: 0; | |
| } | |
| rect, | |
| line { | |
| shape-rendering: crispEdges | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="horizon"> | |
| <h2>Horizon bar chart</h2> | |
| </div> | |
| <div id="heat"> | |
| <h2>Heat map</h2> | |
| </div> | |
| <div id="bar"> | |
| <h2>Bar chart</h2> | |
| </div> | |
| <script> | |
| const minY = 0; | |
| const maxY = 100; | |
| const numberOfBands = 4; | |
| const bandWidth = (maxY - minY)/(numberOfBands); | |
| const height = 80; | |
| const width = 800; | |
| const margin = { "top": 10, "bottom": 10, "left": 50, "right": 10, }; | |
| //used Draw My Data http://www.robertgrantstats.co.uk/drawmydata.html | |
| const data = [9.5433, 4.5433, 4.5433, 6.0817, 8.7743, 10.6971, 22.2356, 34.5433, 37.2356, 37.6202, 37.2356, 35.6971, 34.5433, 38.3894, 43.3894, 47.6202, 52.2356, 55.3125, 59.1587, 59.9279, 58.3894, 56.851, 56.0817, 59.5433, 61.851, 64.9279, 67.6202, 69.9279, 69.9279, 68.004, 67.2356, 65.3125, 62.2356, 60.3125, 58.3894, 57.2356, 47.6202, 39.9279, 1.0817, 2.6202, 13.0048, 12.6202, 61.4663, 61.0817, 69.9279, 77.2356, 85.3125, 82.6202, 91.0817, 88.774, 77.6202, 66.0817, 64.5433, 54.5433, 45.3125, 46.4663, 49.9279, 40.6971, 37.6202, 36.0817, 35.3125, 39.5433, 38.774, 57.6202, 50.3125, 16.851, 17.6202, 18.774, 23.774, 58.774, 48.0048, 46.4663, 50.3125]; | |
| const barWidth = width / data.length - 1; | |
| const xScale = d3.scaleLinear() | |
| .domain([0, data.length]) | |
| .range([0, width]); | |
| var yScaleBar = d3.scaleLinear() | |
| .domain([0, maxY]) | |
| .range([height, 0]); | |
| var colour = d3.scaleLinear() | |
| //.domain(d3.extent(data, function (d) { return d })) | |
| .domain([0,100]) | |
| .range(["yellow", "darkgreen"]); | |
| drawHorizon(data); | |
| drawHeat(data); | |
| drawBarchart(data); | |
| function drawHorizon(data) { | |
| let yScale = d3.scaleLinear() | |
| .domain([0, bandWidth]) | |
| .range([height, 0]); | |
| let yAxis = d3.axisLeft(yScale); | |
| let svg = d3.select("#horizon").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| let g = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| let axisG = g.append("g") | |
| .call(yAxis) | |
| axisG.selectAll("text") | |
| .text(function (d) { return "..." + d }); | |
| axisG.select(".domain").remove(); | |
| let bars = g.selectAll(".bars") | |
| .data(data) | |
| .enter() | |
| .append("g") | |
| .attr("transform", function (d, i) { | |
| return "translate(" + xScale(i) + ",0)"; | |
| }) | |
| let backgroundBars = bars.append("rect") | |
| .attr("width", barWidth) | |
| .attr("height", height) | |
| .style("fill", function (d) { | |
| return d < bandWidth ? "white" : colour(band(d, bandWidth)); | |
| }); | |
| let foregroundBars = bars.append("rect") | |
| .attr("y", function (d) { | |
| let thisHeight = barHeight(d, bandWidth); | |
| return yScale(thisHeight); | |
| }) | |
| .attr("width", barWidth) | |
| .attr("height", function (d) { | |
| let thisHeight = barHeight(d, bandWidth); | |
| return height - yScale(thisHeight); | |
| }) | |
| .style("fill", function (d) { | |
| let thisBand = band(d, bandWidth) + bandWidth; | |
| console.log(d + " - " + thisBand); | |
| return colour(thisBand); | |
| }); | |
| /*var caps = bars.append("line") | |
| .attr("x1", 0) | |
| .attr("x2", barWidth) | |
| .attr("y1", function(d){ | |
| let thisHeight = barHeight(d, bandWidth); | |
| return yScale(thisHeight); | |
| }) | |
| .attr("y2", function(d){ | |
| let thisHeight = barHeight(d, bandWidth); | |
| return yScale(thisHeight); | |
| }) | |
| .style("stroke", "white")*/ | |
| }; | |
| function drawHeat(data) { | |
| let svg = d3.select("#heat").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| let g = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| let bars = g.selectAll(".bars") | |
| .data(data) | |
| .enter() | |
| .append("g") | |
| .attr("transform", function (d, i) { | |
| return "translate(" + xScale(i) + ",0)"; | |
| }) | |
| bars.append("rect") | |
| .attr("width", barWidth) | |
| .attr("height", height) | |
| .style("fill", function (d) { | |
| return colour(d); | |
| }); | |
| }; | |
| function drawBarchart(data) { | |
| let yScale = d3.scaleLinear() | |
| .domain([0, maxY]) | |
| .range([height, 0]); | |
| let yAxis = d3.axisLeft(yScale); | |
| let svg = d3.select("#bar").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| let g = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| let axisG = g.append("g") | |
| .call(yAxis) | |
| axisG.select(".domain").remove(); | |
| let bars = g.selectAll(".bars") | |
| .data(data) | |
| .enter() | |
| .append("g") | |
| .attr("transform", function (d, i) { | |
| return "translate(" + xScale(i) + ",0)"; | |
| }); | |
| bars.append("rect") | |
| .attr("x", 0) | |
| .attr("y", function (d) { | |
| return yScale(d); | |
| }) | |
| .attr("width", barWidth) | |
| .attr("height", function (d) { | |
| return height - yScale(d); | |
| }) | |
| .style("fill", colour(50)); | |
| }; | |
| function band(n, bandWidth) { | |
| return Math.floor(n / bandWidth) * bandWidth; | |
| }; | |
| function barHeight(n, bandWidth) { | |
| return n - band(n, bandWidth); | |
| }; | |
| </script> | |
| </body> |
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