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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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body { |
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background-color: #F1F3F3 |
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} |
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.axis { |
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font: 15px sans-serif; |
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} |
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.axis path, |
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.axis line { |
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fill: none; |
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stroke: #D4D8DA; |
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stroke-width: 1px; |
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shape-rendering: crispEdges; |
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} |
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.toolTip { |
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position: absolute; |
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display: none; |
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min-width: 80px; |
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height: auto; |
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background: none repeat scroll 0 0 #ffffff; |
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border: 1px solid #6F257F; |
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padding: 14px; |
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text-align: center; |
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} |
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</style> |
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<svg width="960" height="500"></svg> |
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<script src="https://d3js.org/d3.v4.min.js"></script> |
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<script> |
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var svg = d3.select("svg"), |
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margin = {top: 20, right: 20, bottom: 30, left: 50}, |
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width = +svg.attr("width") - margin.left - margin.right, |
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height = +svg.attr("height") - margin.top - margin.bottom; |
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var tooltip = d3.select("body").append("div").attr("class", "toolTip"); |
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var x = d3.scaleBand().rangeRound([0, width]).padding(0.1), |
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y = d3.scaleLinear().rangeRound([height, 0]); |
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var colours = d3.scaleOrdinal() |
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.range(["#6F257F", "#CA0D59"]); |
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var g = svg.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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d3.json("data.json", function(error, data) { |
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if (error) throw error; |
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x.domain(data.map(function(d) { return d.area; })); |
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y.domain([0, d3.max(data, function(d) { return d.value; })]); |
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g.append("g") |
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.attr("class", "axis axis--x") |
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.attr("transform", "translate(0," + height + ")") |
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.call(d3.axisBottom(x)); |
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g.append("g") |
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.attr("class", "axis axis--y") |
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.call(d3.axisLeft(y).ticks(5).tickFormat(function(d) { return parseInt(d / 1000) + "K"; }).tickSizeInner([-width])) |
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.append("text") |
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.attr("transform", "rotate(-90)") |
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.attr("y", 6) |
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.attr("dy", "0.71em") |
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.attr("text-anchor", "end") |
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.attr("fill", "#5D6971") |
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.text("Average House Price - (£)"); |
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g.selectAll(".bar") |
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.data(data) |
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.enter().append("rect") |
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.attr("x", function(d) { return x(d.area); }) |
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.attr("y", function(d) { return y(d.value); }) |
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.attr("width", x.bandwidth()) |
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.attr("height", function(d) { return height - y(d.value); }) |
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.attr("fill", function(d) { return colours(d.area); }) |
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.on("mousemove", function(d){ |
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tooltip |
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.style("left", d3.event.pageX - 50 + "px") |
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.style("top", d3.event.pageY - 70 + "px") |
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.style("display", "inline-block") |
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.html((d.area) + "<br>" + "£" + (d.value)); |
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}) |
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.on("mouseout", function(d){ tooltip.style("display", "none");}); |
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}); |
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</script> |