Created
May 3, 2017 22:28
d3v4 Multi-Line Chart with Nesting
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Month | Sales | Fruit | |
---|---|---|---|
Jan | 87 | strawberry | |
Feb | 3 | strawberry | |
Mar | 89 | strawberry | |
Apr | 56 | strawberry | |
May | 1 | strawberry | |
Jun | 17 | strawberry | |
Jul | 59 | strawberry | |
Aug | 43 | strawberry | |
Sep | 16 | strawberry | |
Oct | 94 | strawberry | |
Nov | 99 | strawberry | |
Dec | 53 | strawberry | |
Jan | 93 | grape | |
Feb | 8 | grape | |
Mar | 95 | grape | |
Apr | 62 | grape | |
May | 5 | grape | |
Jun | 24 | grape | |
Jul | 62 | grape | |
Aug | 49 | grape | |
Sep | 18 | grape | |
Oct | 101 | grape | |
Nov | 103 | grape | |
Dec | 53 | grape | |
Jan | 94 | blueberry | |
Feb | 15 | blueberry | |
Mar | 95 | blueberry | |
Apr | 64 | blueberry | |
May | 11 | blueberry | |
Jun | 33 | blueberry | |
Jul | 64 | blueberry | |
Aug | 53 | blueberry | |
Sep | 27 | blueberry | |
Oct | 103 | blueberry | |
Nov | 108 | blueberry | |
Dec | 62 | blueberry |
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// Set the margins | |
var margin = {top: 60, right: 100, bottom: 20, left: 80}, | |
width = 850 - margin.left - margin.right, | |
height = 370 - margin.top - margin.bottom; | |
// Parse the month variable | |
var parseMonth = d3.timeParse("%b"); | |
var formatMonth = d3.timeFormat("%b"); | |
// Set the ranges | |
var x = d3.scaleTime().domain([parseMonth("Jan"),parseMonth("Dec")]).range([0, width]); | |
var y = d3.scaleLinear().range([height, 0]); | |
// Define the line | |
var valueLine = d3.line() | |
.x(function(d) { return x(d.Month); }) | |
.y(function(d) { return y(+d.Sales); }) | |
// Create the svg canvas in the "graph" div | |
var svg = d3.select("#graph") | |
.append("svg") | |
.style("width", width + margin.left + margin.right + "px") | |
.style("height", height + margin.top + margin.bottom + "px") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform","translate(" + margin.left + "," + margin.top + ")") | |
.attr("class", "svg"); | |
// Import the CSV data | |
d3.csv("Example2.csv", function(error, data) { | |
if (error) throw error; | |
// Format the data | |
data.forEach(function(d) { | |
d.Month = parseMonth(d.Month); | |
d.Sales = +d.Sales; | |
d.Fruit = d.Fruit; | |
}); | |
var nest = d3.nest() | |
.key(function(d){ | |
return d.Fruit; | |
}) | |
.entries(data) | |
// Scale the range of the data | |
x.domain(d3.extent(data, function(d) { return d.Month; })); | |
y.domain([0, d3.max(data, function(d) { return d.Sales; })]); | |
// Set up the x axis | |
var xaxis = svg.append("g") | |
.attr("transform", "translate(0," + height + ")") | |
.attr("class", "x axis") | |
.call(d3.axisBottom(x) | |
.ticks(d3.timeMonth) | |
.tickSize(0, 0) | |
.tickFormat(d3.timeFormat("%B")) | |
.tickSizeInner(0) | |
.tickPadding(10)); | |
// Add the Y Axis | |
var yaxis = svg.append("g") | |
.attr("class", "y axis") | |
.call(d3.axisLeft(y) | |
.ticks(5) | |
.tickSizeInner(0) | |
.tickPadding(6) | |
.tickSize(0, 0)); | |
// yaxis.select(".domain").style("display","none") | |
// Add a label to the y axis | |
svg.append("text") | |
.attr("transform", "rotate(-90)") | |
.attr("y", 0 - 60) | |
.attr("x", 0 - (height / 2)) | |
.attr("dy", "1em") | |
.style("text-anchor", "middle") | |
.text("Monthly Sales") | |
.attr("class", "y axis label"); | |
// Draw the line | |
svg.selectAll(".line") | |
.data(nest) | |
.enter() | |
.append("path") | |
.attr("class", "line") | |
.attr("d", function(d){ | |
return valueLine(d.values)}); | |
}) |
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="utf-8"> | |
<title>D3 Page Template</title> | |
<script src="https://d3js.org/d3.v4.js"></script> | |
<link rel="stylesheet" href="style.css"> | |
</head> | |
<body> | |
<div id="graph"></div> | |
<script src="Exploration2.js"></script> | |
</body> | |
</html> |
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.line { | |
fill: none; | |
stroke: #EF5285; | |
stroke-width: 2px; | |
} |
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