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[basic chart] line chart (d3 v4)
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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 { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
.line { | |
fill: none; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
// Feel free to change or delete any of the code you see in this editor! | |
var svg = d3.select("body").append("svg") | |
.attr("width", 960) | |
.attr("height", 300) | |
var margin = {left:30, right:30, top: 10, bottom: 20} | |
var width = svg.attr("width") - margin.left - margin.right; | |
var height = svg.attr("height") - margin.bottom - margin.top; | |
// TODO: nest data with d3.nest | |
var data = [{"date":"01/01/2016", "a": 250, "b": 0, "c": 0, "d": 0}, | |
{"date":"01/02/2016", "a": 150, "b": 80, "c": 20, "d": 0}, | |
{"date":"01/03/2016", "a": 150, "b": 70, "c": 10, "d": 20}, | |
{"date":"01/04/2016", "a": 150, "b": 30, "c": 30, "d": 40} | |
] | |
var x = d3.scaleTime() | |
.rangeRound([0, width]); | |
var x_axis = d3.axisBottom(x); | |
var y = d3.scaleLinear() | |
.rangeRound([height, 0]); | |
var y_axis = d3.axisBottom(y); | |
var parseTime = d3.timeParse("%d/%m/%Y"); | |
x.domain(d3.extent(data, function(d) { return parseTime(d.date); })); | |
y.domain([0, | |
d3.max(data, function(d) { | |
return d3.max([d.a, d.b, d.c, d.d]); | |
})]); | |
var a = function(d) {return d.a}; | |
var multiline = function(category) { | |
var line = d3.line() | |
.x(function(d) { return x(parseTime(d.date)); }) | |
.y(function(d) { return y(d[category]); }); | |
return line; | |
} | |
var line = d3.line() | |
.x(function(d) { return x(parseTime(d.date)); }) | |
.y(function(d) { return y(d); }); | |
var categories = ['a', 'b', 'c', 'd']; | |
//var color = d3.scale.category10(); // escala com 10 cores (category10) | |
var color = d3.scaleOrdinal(d3.schemeCategory10); | |
var g = svg.append("g") | |
.attr("transform", | |
"translate(" + margin.left + "," + margin.top + ")"); | |
for (i in categories) { | |
var lineFunction = multiline(categories[i]); | |
g.append("path") | |
.datum(data) | |
.attr("class", "line") | |
.style("stroke", color(i)) | |
.attr("d", lineFunction); | |
} | |
// Add the X Axis | |
g.append("g") | |
.attr("transform", "translate(0," + height + ")") | |
.call(d3.axisBottom(x)); | |
// Add the Y Axis | |
g.append("g") | |
.call(d3.axisLeft(y)); | |
</script> | |
</body> |
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