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<!DOCTYPE html> |
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<head> |
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<meta charset="utf-8"> |
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<script src="https://d3js.org/d3.v4.min.js"></script> |
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<style> |
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.line { |
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fill: none; |
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stroke: black; |
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stroke-width: 1.5px; |
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} |
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div.tooltip { |
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position: absolute; |
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text-align: center; |
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width: 60px; |
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height: 28px; |
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padding: 2px; |
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font: 12px sans-serif; |
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background: none; |
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border: 0px; |
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border-radius: 8px; |
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pointer-events: none; |
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} |
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.hover-line { |
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stroke: red; |
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stroke-width: 2px; |
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stroke-dasharray: 3,3; |
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} |
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} |
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</style> |
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</head> |
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<body> |
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<script> |
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var svg = d3.select("body").append("svg") |
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.attr("width", 960) |
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.attr("height", 500); |
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var width = 800; |
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var height = 400; |
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// See formats http://bl.ocks.org/zanarmstrong/raw/05c1e95bf7aa16c4768e/ |
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// Data sample {"name": "G", "value": 10, "date": "2016-07"} |
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var parseDate = d3.timeParse("%Y-%m"); |
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var displayDate = d3.timeFormat("%b %y"); |
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var displayValue = d3.format(",.0f"); |
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// Ordinal scale |
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var x = d3.scaleTime() |
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.range([0, width]); |
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// Linear scale |
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var y = d3.scaleLinear() |
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.range([height, height - 200]); |
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var line = d3.line() |
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.x(function(d) { return x(d.date); }) |
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.y(function(d) { return y(d.value); }); |
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var div = d3.select("body").append("div") |
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.attr("class", "tooltip") |
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.style("opacity", 0); |
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var g = svg.append("g") |
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.attr("transform", "translate(50, 0)") |
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d3.json("dataset.json", function(error, data) { |
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if (error) throw error; |
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// Pre-processing |
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data.forEach(function(d) { |
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d.value = +d.value; |
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d["date"] = parseDate(d["date"]); |
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}); |
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x.domain(d3.extent(data, function(d) { return d.date; })); |
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y.domain([0, d3.max(data, function(d) { return d.value; })]); |
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svg.selectAll(".label").data(data).enter() |
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.append("text") |
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.attr("class", "label") |
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.text(function(d, i) { return displayDate(d.date); }) |
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.attr("y", 420) |
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.attr("x", function(d) { return x(d.date); }) |
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.style("font-size", 10) |
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.style("font-family", "monospace"); |
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// Display last value |
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g.selectAll(".value").data([data[data.length -1]]).enter() |
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.append("text") |
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.text(function(d, i) { return displayValue(d.value); }) |
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.attr("class", "value") |
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.attr("y", function(d) { return y(d.value); }) |
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.attr("x", width + 10) |
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.style("font-size", 20) |
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.style("font-family", "monospace"); |
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g.selectAll(".line").data([data]).enter().append("path") |
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.attr("class", "line") |
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.attr("d", line); |
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/// |
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g.append("line") |
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.attr("class", "x-hover-line hover-line") |
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.attr("y1", 0) |
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.attr("y2", height); |
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g.append("line") |
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.attr("class", "y-hover-line hover-line") |
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.attr("x1", width) |
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.attr("x2", width); |
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/// |
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g.selectAll("rect") |
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.data(data) |
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.enter().append('rect') |
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.attr("transform", "translate(50, 0)") |
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.attr("class", "overlay") |
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.attr("width", width) |
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.attr("height", height) |
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.on("mouseover", function() { focus.style("display", null); }) |
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.on("mouseout", function() { focus.style("display", "none"); }) |
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.on("mousemove", function (){ |
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g.select(".x-hover-line").attr("y2", height - y(d.value)); |
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g.select(".y-hover-line").attr("x2", width + width); |
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}); |
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g.selectAll('circle') |
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.data(data) |
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.enter().append('circle') |
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.attr('cx', function(d) { |
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return x(d.date); |
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}) |
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.attr('cy', function(d) { |
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return y(d.value); |
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}) |
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.attr('r', 10) |
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.attr('fill',"#d9d0e6") |
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.on("mouseover", function(d) { |
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d3.select(this).style("fill", "red") |
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.style("font-size", 20) |
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.style("font-size", 24) |
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div.transition() |
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.duration(200) |
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.style("opacity", .9); |
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div .html(d.value) |
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.style("left", (d3.event.pageX-20) + "px") |
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.style("top", (d3.event.pageY - 40) + "px"); |
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}) |
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.on("mouseout", function(d) { |
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d3.select(this).transition().duration(500).style("fill", "#d9d0e6") |
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// Should be using Ids instead of values |
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.transition().duration(500) |
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.style("font-size", 12) |
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div.transition() |
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.duration(500) |
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.style("opacity", 0); |
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}); |
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}); |
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// function mouse () |
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</script> |
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</body> |
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