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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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font: 10px 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: #000; |
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shape-rendering: crispEdges; |
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} |
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.dot { |
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stroke: #000; |
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} |
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.d3-tip { |
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line-height: 1; |
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font-weight: bold; |
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padding: 12px; |
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background: rgba(0, 0, 0, 0.8); |
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color: #fff; |
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border-radius: 2px; |
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} |
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/* Creates a small triangle extender for the tooltip */ |
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.d3-tip:after { |
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box-sizing: border-box; |
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display: inline; |
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font-size: 10px; |
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width: 100%; |
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line-height: 1; |
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color: rgba(0, 0, 0, 0.8); |
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content: "\25BC"; |
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position: absolute; |
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text-align: center; |
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} |
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/* Style northward tooltips differently */ |
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.d3-tip.n:after { |
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margin: -1px 0 0 0; |
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top: 100%; |
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left: 0; |
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} |
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</style> |
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<body> |
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<script src="//d3js.org/d3.v3.min.js"></script> |
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<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script> |
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<script> |
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// Open both the PCoA data and grouping files. |
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d3.tsv("PCoA.tsv", function(error, data) { |
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if (error) throw error; |
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d3.tsv("PCoA_groups.tsv", function(error, groupData) { |
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if (error) throw error; |
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// Define the sizes and margins for our canvas. |
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var margin = {top: 20, right: 20, bottom: 30, left: 40}, |
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width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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// Cast my values as numbers and determine ranges. |
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var minmax = {p1: {min:0, max:0}, p2: {min:0, max:0}} |
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data.forEach(function(d) { |
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d.p1 = +d.p1; |
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d.p2 = +d.p2; |
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minmax.p1.min = Math.min(d.p1, minmax.p1.min); |
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minmax.p1.max = Math.max(d.p1, minmax.p1.max); |
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minmax.p2.min = Math.min(d.p2, minmax.p2.min); |
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minmax.p2.max = Math.max(d.p2, minmax.p2.max); |
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}); |
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// Set-up my x scale. |
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var x = d3.scale.linear() |
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.range([0, width]) |
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.domain([Math.floor(minmax.p1.min), Math.ceil(minmax.p1.max)]); |
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// Set-up my y scale. |
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var y = d3.scale.linear() |
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.range([height, 0]) |
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.domain([Math.floor(minmax.p2.min), Math.ceil(minmax.p2.max)]); |
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// Create my x-axis using my scale. |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.orient("bottom"); |
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// Create my y-axis using my scale. |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left"); |
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// Set-up my colours/groups. |
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var color = d3.scale.category10(); |
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var groups = {}; |
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groupData.forEach(function(d) { |
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groups[d.line] = d.group; |
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}); |
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// Create my tooltip creating function. |
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var tip = d3.tip() |
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.attr('class', 'd3-tip') |
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.offset([-10, 0]) |
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.html(function(d) { |
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return "<strong>" + d.name + "</strong> (" + groups[d.name] + ")"; |
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}); |
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// Actually create my canvas. |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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// Initialize my tooltip. |
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svg.call(tip); |
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// Draw my x-axis. |
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svg.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + y(0) + ")") |
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.call(xAxis) |
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.append("text") |
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.attr("class", "label") |
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.attr("x", width) |
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.attr("y", -6) |
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.style("text-anchor", "end") |
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.text("Coord. 1"); |
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// Draw my y-axis. |
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svg.append("g") |
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.attr("class", "y axis") |
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.attr("transform", "translate(" + x(0) + ",0)") |
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.call(yAxis) |
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.append("text") |
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.attr("class", "label") |
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.attr("transform", "rotate(-90)") |
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.attr("y", 6) |
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.attr("dy", ".71em") |
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.style("text-anchor", "end") |
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.text("Coord. 2"); |
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// Create all the data points :-D. |
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svg.selectAll(".dot") |
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.data(data) |
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.enter().append("circle") |
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.attr("class", "dot") |
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.attr("r", 3.5) |
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.attr("cx", function(d) { return x(d.p1); }) |
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.attr("cy", function(d) { return y(d.p2); }) |
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.style("stroke", function(d) { return color(groups[d.name]); }) |
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.style("fill", function(d) { return color(groups[d.name]); }) |
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.on('mouseover', tip.show) |
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.on('mouseout', tip.hide); |
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// Create the container for the legend if it doesn't already exist. |
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var legend = svg.selectAll(".legend") |
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.data(color.domain()) |
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.enter().append("g") |
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.attr("class", "legend") |
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.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; }); |
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// Draw the coloured rectangles for the legend. |
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legend.append("rect") |
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.attr("x", width - 18) |
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.attr("width", 18) |
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.attr("height", 18) |
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.style("fill", color); |
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// Draw the labels for the legend. |
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legend.append("text") |
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.attr("x", width - 24) |
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.attr("y", 9) |
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.attr("dy", ".35em") |
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.style("text-anchor", "end") |
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.text(function(d) { return d; }); |
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}); |
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}); |
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</script> |
