%PDF-
%PDF-
Mini Shell
Mini Shell
/*=========================================================================================
File Name: pie-multiples-nesting.js
Description: D3 pie multiples nesting chart
----------------------------------------------------------------------------------------
Item Name: Modern Admin - Clean Bootstrap 4 Dashboard HTML Template
Version: 1.0
Author: PIXINVENT
Author URL: http://www.themeforest.net/user/pixinvent
==========================================================================================*/
// Pie multiple nesting chart
// ------------------------------
$(window).on("load", function(){
var ele = d3.select("#nested-pie"),
margin = {top: 20, right: 10, bottom: 20, left: 10},
width = 300,
height = 300;
radius = (Math.min(width, height) - (margin * 2) ) / 2;
// Colors
var colors = d3.scale.ordinal()
.range(["#99B898", "#FECEA8", "#FF847C", "#E84A5F", "#F8B195", "#F67280", "#C06C84"]);
// Load data
// ------------------------------
d3.csv("../../../app-assets/data/d3/pie/flights.csv", function(flights) {
// Nest the flight data by originating airport
var airports = d3.nest()
.key(function(d) { return d.origin; })
.entries(flights);
// Create chart
// ------------------------------
// Insert an svg element (with margin) for each row in our dataset
var svg = ele
.selectAll("svg")
.data(airports)
.enter()
.append("svg")
.attr("width", (radius + margin.left + margin.right) * 2)
.attr("height", (radius + margin.left + margin.right + margin.top) * 2)
.append("g")
.attr("transform", "translate(" + (radius + margin.left + margin.right) + "," + (radius + margin.left + margin.right + margin.top) + ")");
// Chart
// --------------
// Arc
var arc = d3.svg.arc()
.innerRadius(0)
.outerRadius(radius);
// Pie
var pie = d3.layout.pie()
.value(function(d) { return +d.count; })
.sort(function(a, b) { return b.count - a.count; });
svg.append("text")
.attr("dy", ".35em")
.attr("y", -150)
.style("text-anchor", "middle")
.style("font-weight", 500)
.text(function(d) { return d.key; });
var g = svg.selectAll("g")
.data(function(d) { return pie(d.values); })
.enter()
.append("g")
.attr("class", "d3-arc");
g.append("path")
.attr("d", arc)
.style("stroke", "#fff")
.style("fill", function(d) { return colors(d.data.carrier); })
.append("title")
.text(function(d) { return d.data.carrier + ": " + d.data.count; });
g.filter(function(d) { return d.endAngle - d.startAngle > .2; }).append("text")
.attr("dy", ".35em")
.attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")rotate(" + angle(d) + ")"; })
.style("fill", "#fff")
.style("font-size", 12)
.style("text-anchor", "middle")
.text(function(d) { return d.data.carrier; });
function angle(d) {
var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
return a > 90 ? a - 180 : a;
}
});
});
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