Pie chart not updating D3.JS - javascript

I know this question has been asked many times but I am not able to solve the problem of updating my pie chart. I am completely lost. Could you please tell me what seems to the problem here ?
I tried the following way but the chart doesn't seem to update. I added a function change that is supposed to update the chart. I am updating the data, redrawing the arcs and changing the labels but it is not working.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Load D3 -->
<script src="https://d3js.org/d3.v5.min.js"></script>
<title>Document</title>
</head>
<body>
<div id="pie"></div>
<script>
var dataChart = { a: 9, b: 20, c: 30, d: 8, e: 12 };
var dataChart2 = { f: 9, g: 20, h: 30, i: 8 };
console.log(dataChart);
var width = 300,
height = 300,
// Think back to 5th grade. Radius is 1/2 of the diameter. What is the limiting factor on the diameter? Width or height, whichever is smaller
radius = Math.min(width, height) / 2;
var color = d3.scaleOrdinal()
.range(["#2C93E8", "#838690", "#F56C4E"]);
var pie = d3.pie()
.value(function (d) { return d.value; });
data = pie(d3.entries(dataChart));
var arc = d3.arc()
.outerRadius(radius - 10)
.innerRadius(0);
var labelArc = d3.arc()
.outerRadius(radius - 40)
.innerRadius(radius - 40);
var svg = d3.select("#pie")
.append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); // Moving the center point. 1/2 the width and 1/2 the height
var g = svg.selectAll("arc")
.data(data)
.enter().append("g")
.attr("class", "arc");
g.append("path")
.attr("d", arc)
.style("fill", function (d) { return color(d.data.key); });
g.append("text")
.attr("transform", function (d) { return "translate(" + labelArc.centroid(d) + ")"; })
.text(function (d) { return d.data.key; })
.style("fill", "#fff");
function change(dataChart) {
var pie = d3.pie()
.value(function (d) { return d.value; });
data = pie(d3.entries(dataChart));
path = d3.select("#pie").selectAll("path").data(data); // Compute the new angles
path.attr("d", arc); // redrawing the path
d3.selectAll("text").data(data).attr("transform", function (d) { return "translate(" + labelArc.centroid(d) + ")"; }); // recomputing the centroid and translating the text accordingly.
}
// calling the update functions
change(dataChart);
change (dataChart2);
</script>
</body>
</html>

Related

why my two graph of d3.js is not combined in the single page?

I have made two separate graph on separate page of Bar and pie chart respectively and now i wanted to combine this two graph in the single page so that I can have a dashboard. but when i start to combine to two graph in the main page its not happening and they overlap of each other.
Code:
https://github.com/Mustafa2911/d3-design/blob/main/combine.html
Combine file contain: Code of both pie and bar chart.
Bar file contain: Code of bar chart.
Pie chart contain: Code of pie chart.
Tried this with your code.
Scroll to see the bar graph axis.
NOTE: The bar graph data will not be available ∵ it is from the demo1.csv file in your repository.
Hope this helps.
<!DOCTYPE html>
<meta charset="utf-8">
<head>
<!-- Load d3.js -->
<script src="https://d3js.org/d3.v4.js"></script>
<script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script>
<style>
#my_dataviz {
display: inline-block;
width: 50%;
}
</style>
</head>
<body>
<div id="my_dataviz"></div>
<script>
// set the dimensions and margins of the graph
var width = 800
height = 450
margin = 40
// The radius of the pieplot is half the width or half the height (smallest one). I subtract a bit of margin.
var radius = Math.min(width, height) / 2 - margin
// append the svg object to the div called 'my_dataviz'
var svg = d3.select("#my_dataviz")
.append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
// Create dummy data
var data = {
Corporation_Tax: 15,
Income_Tax: 15,
Customs: 5,
Union_Excise_Duties: 7,
Good_and_Service_tax: 16,
Non_tax_Revenue: 5,
Non_Dept_Capital_Receipt: 2,
Borrowings_Liabilities: 35
}
// set the color scale
var color = d3.scaleOrdinal()
.domain(["a", "b", "c", "d", "e", "f", "g", "h"])
.range(d3.schemeSet1);
// Compute the position of each group on the pie:
var pie = d3.pie()
.sort(null) // Do not sort group by size
.value(function(d) {
return d.value;
})
var data_ready = pie(d3.entries(data))
// The arc generator
var arc = d3.arc()
.innerRadius(radius * 0.5) // This is the size of the donut hole
.outerRadius(radius * 0.8)
// Another arc that won't be drawn. Just for labels positioning
var outerArc = d3.arc()
.innerRadius(radius * 0.9)
.outerRadius(radius * 0.9)
// Build the pie chart: Basically, each part of the pie is a path that we build using the arc function.
svg
.selectAll('allSlices')
.data(data_ready)
.enter()
.append('path')
.attr('d', arc)
.attr('fill', function(d) {
return (color(d.data.key))
})
.attr("stroke", "white")
.style("stroke-width", "2px")
.style("opacity", 1)
// Add the polylines between chart and labels:
svg
.selectAll('allPolylines')
.data(data_ready)
.enter()
.append('polyline')
.attr("stroke", "black")
.style("fill", "none")
.attr("stroke-width", 1)
.attr('points', function(d) {
var posA = arc.centroid(d) // line insertion in the slice
var posB = outerArc.centroid(d) // line break: we use the other arc generator that has been built only for that
var posC = outerArc.centroid(d); // Label position = almost the same as posB
var midangle = d.startAngle + (d.endAngle - d.startAngle) / 2 // we need the angle to see if the X position will be at the extreme right or extreme left
posC[0] = radius * 0.95 * (midangle < Math.PI ? 1 : -1); // multiply by 1 or -1 to put it on the right or on the left
return [posA, posB, posC]
})
// Add the polylines between chart and labels:
svg
.selectAll('allLabels')
.data(data_ready)
.enter()
.append('text')
.text(function(d) {
console.log(d.data.key);
return d.data.key
})
.attr('transform', function(d) {
var pos = outerArc.centroid(d);
var midangle = d.startAngle + (d.endAngle - d.startAngle) / 2
pos[0] = radius * 0.99 * (midangle < Math.PI ? 1 : -1);
return 'translate(' + pos + ')';
})
.style('text-anchor', function(d) {
var midangle = d.startAngle + (d.endAngle - d.startAngle) / 2
return (midangle < Math.PI ? 'start' : 'end')
})
</script>
<style>
#my_dataviz {
display: inline-block;
width: 50%;
}
</style>
<div id="my_dataviz_es"></div>
<script>
// set the dimensions and margins of the graph
var margin = {
top: 20,
right: 30,
bottom: 40,
left: 160
},
width = 460,
height = 400;
// append the svg object to the body of the page
var svg = d3.select("#my_dataviz_es")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")");
// Parse the Data
d3.csv("demo1.csv", function(data) {
// Add X axis
var x = d3.scaleLinear()
.domain([0, 550000])
.range([0, width]);
svg.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x))
.selectAll("text")
.attr("transform", "translate(-10,0)rotate(-45)")
.style("text-anchor", "end");
// Y axis
var y = d3.scaleBand()
.range([0, height])
.domain(data.map(function(d) {
return d.Country;
}))
.padding(.1);
svg.append("g")
.call(d3.axisLeft(y))
//Bars
svg.selectAll("myRect")
.data(data)
.enter()
.append("rect")
.attr("x", x(0))
.attr("y", function(d) {
return y(d.Country);
})
.attr("width", function(d) {
return x(d.Value);
})
.attr("height", y.bandwidth())
.attr("fill", "#69b3a2")
// .attr("x", function(d) { return x(d.Country); })
// .attr("y", function(d) { return y(d.Value); })
// .attr("width", x.bandwidth())
// .attr("height", function(d) { return height - y(d.Value); })
// .attr
})
</script>
</body>
</html>
EDIT: See here - https://codepen.io/KZJ/pen/rNpqvdq?editors=1011 - for changes made reg. the below comment
what if I want to have my bar chart at the top and on right side i want to have my pie chart
Changed -
a) Both charts were using the same name 'svg' to d3.select() the divs. This caused the charts to overlap.
b) Modified width, height, transform, and added some border CSS - only for demonstration purposes - It can be removed/edited as required.
FYR this is how it looks now -

SVG element not getting selected - Bar chart not being displayed

I am trying to create a simple bar chart using the following code. There seems to be some issue with svg element due to which the bar chart is not getting displayed in the browser window. The only output I get is "Bar Chart using D3.js". I am using MacOS+Chrome.
Also I am not sure if "<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/3.0.10/polyfills.js"></script>" is required
Following files are index.js and index.html respectively.
var dataset = [80, 100, 56, 120, 180, 30, 40, 120, 160];
var svgWidth = 500,
svgHeight = 300,
barPadding = 5; //ht and wt
var barWidth = (svg / dataset.length); //each bar wt
var svg = d3.select('svg') //give attr of wt and ht
.attr("width", svgWidth)
.attr("height", svgHeight);
var barChart = svg.selectAll("rect") //create bar chart with rect
.data(dataset) //provide dataset
.enter() //takes data from waiting state perform operation
.append("rect")
.attr("y", function(d) {
return svgHeight - d
})
.attr("height", function(d) {
return d;
})
.attr("width", barWidth - barPadding)
.attr("transform", function(d, i) {
var translate = [barWidth * i, 0]; //[x axis, y axis]
return "translate(" + translate + ")"; //translate one bar after another
<html>
<head>
<link rel="stylesheet" href="index.css">
<title>Basics of D3.js</title>
</head>
<body>
<h1>Bar chart using D3.js</h1>
<svg class="bar-chart"></svg>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/3.0.10/polyfills.js"></script>
<script src="index.js"></script>
</body>
</html>

curved text around D3.js pie chart

I'm building a 3D-Js chart, where i want the pie text being around the pie it self.
Here is exactly what i want:
I have two problems: i'm printing two charts right now (labels are printed in another chart) and adjusting them with CSS.
-First i didn't figure out how to set labels, in the same chart, so i'm adjusting it with CSS.
-i didn't figure out how to set the right angle to make the labels chart fit the first chart.
if there is a way, please make them printed in the same chart.
here is my code:
<script src="http://d3js.org/d3.v3.min.js"></script>
<div id = "svgContent"></div>
<script>
var data = [{label:"BC", value:50},{label:"Alb", value:20},{label:"Mani",value:100},{label:"Sascn", value:80},{label:"ORIO", value:20}];
var margin = {top:40,left:40,right:40,bottom:40};
width = 300;
height = 300;
radius = Math.min(width-100,height-100)/2;
var color = d3.scale.category10().range(["#e8af92", "#a9e892"]);
var arc = d3.svg.arc()
.outerRadius(radius -230)
.innerRadius(radius - 50)
.cornerRadius(20);
var arcOver = d3.svg.arc()
.outerRadius(radius +5000)
.innerRadius(200);
var a=width/2 - 20;
var b=height/2 - 90;
var svg = d3.select("#svgContent").append("svg")
.attr("viewBox", "0 0 " + width + " " + height/2)
.attr("preserveAspectRatio", "xMidYMid meet")
.append("g")
.attr("transform","translate("+a+","+b+")");
var pie = d3.layout.pie()
.sort(null)
.value(function(d){return d.value;})
.padAngle(.4);
var g = svg.selectAll(".arc")
.data(pie(data))
.enter();
g.append("path")
.attr("d",arc)
.style("fill",function(d){return color(d.data.value);})
.attr("d", arc);
</script>
<div id="datas" style="margin-top:-580px;margin-left:-10px;">
<script>
var delta = (2*Math.PI)/5;
var arc = d3.svg.arc()
.innerRadius(185)
.outerRadius(185)
.startAngle(function(d,i){return (i)*delta;})
.endAngle(function(d,i){return (i+1)*delta;});
var svg = d3.select("#datas").append("svg")
.attr("width", 960)
.attr("height", 500)
.selectAll("g")
.data(data)
.enter()
.append("g")
.attr("transform", "translate(480,250)rotate(00)");
var thing = svg.append("g")
.attr("id","thing")
.style("fill","navy")
.attr("class", "label");
var arcs = svg.append("path")
.attr("id", function(d,i){return "s"+i;})
.attr("d",arc);
thing.append("text")
.style("font-size",10)
.style("text-anchor","middle")
.append("textPath")
.attr("textLength",function(d,i){return d.label.length *8 ;})
.attr("xlink:href",function(d,i){return "#s"+i;})
.attr("startOffset",function(d,i){return "130";})
// .attr("dy","em")
.text(function(d){return d.label.toUpperCase();});
</script>
</div>
Here's your code refactored a bit:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
<script src="script.js"></script>
</head>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<div id="svgContent"></div>
<script>
var data = [{
label: "BC",
value: 50
}, {
label: "Alb",
value: 20
}, {
label: "Mani",
value: 100
}, {
label: "Sascn",
value: 80
}, {
label: "ORIO",
value: 20
}];
var margin = {
top: 40,
left: 40,
right: 40,
bottom: 40
};
width = 300;
height = 300;
radius = Math.min(width - 100, height - 100) / 2;
var color = d3.scale.category10().range(["#e8af92", "#a9e892"]);
var arc = d3.svg.arc()
.outerRadius(radius - 230)
.innerRadius(radius - 50)
.cornerRadius(20);
var arcOver = d3.svg.arc()
.outerRadius(radius + 5000)
.innerRadius(200);
var a = width / 2 - 20;
var b = height / 2 - 90;
var svg = d3.select("#svgContent").append("svg")
.attr("viewBox", "0 0 " + width + " " + height / 2)
.attr("preserveAspectRatio", "xMidYMid meet")
var defs = svg.append("defs");
svg = svg.append("g")
.attr("transform", "translate(" + a + "," + b + ")");
var pie = d3.layout.pie()
.sort(null)
.value(function(d) {
return d.value;
})
.padAngle(.4);
data = pie(data);
// build out the defs
defs.selectAll("path")
.data(data)
.enter()
.append("path")
.attr("id", function(d,i){
return "arc" + i;
})
.attr("d", arc);
// and the arcs
var g = svg.selectAll(".arc")
.data(data)
.enter()
.append("g");
g.append("path")
.style("fill", function(d) {
return color(d.data.value);
})
.attr("d", arc);
// add the texts
g.append("text")
.append("textPath")
.attr("xlink:href", function(d,i){
return "#arc" + i;
})
.text(function(d){
return d.data.label;
})
.style("font", "8px sans-serif");
</script>
</body>
</html>

Aster Plot legend labels along with the arc

I am using aster plot of d3 in my project.
I want legend labels along with the arc radius outside the circle.
I could get an example of piechart showing labels along and outside the arc.
http://bl.ocks.org/Guerino1/2295263
But i am unable to implement the same in aster plot of d3.
http://bl.ocks.org/bbest/2de0e25d4840c68f2db1
Any help would be appreciated.
Thanks
Couple things to fix.
1.) You have to introduce margins into the aster plot for the labels.
2.) You then have to take the outer arcs, add a an svg g do you can group a path with a text:
var outerGroup = svg.selectAll(".solidArc")
.data(pie(data))
.enter()
.append("g")
outerGroup
.append("path")
.attr("fill", function(d) { return d.data.color; })
.attr("class", "solidArc")
.attr("stroke", "gray")
.attr("d", arc)
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
outerGroup
.append("text")
.attr("transform", function(d) {
return "translate(" + centroid(60, width, d.startAngle, d.endAngle) + ")";
})
.attr("text-anchor", "middle")
.text(function(d) { return d.data.label });
Note I had to create my own centroid function to move the labels outside the arc. The code in the pie chart example you linked did not work for me (it's using a old d3 version).
Here's my centroid function stolen from the d3 source:
function centroid(innerR, outerR, startAngle, endAngle){
var r = (innerR + outerR) / 2, a = (startAngle + endAngle) / 2 - (Math.PI / 2);
return [ Math.cos(a) * r, Math.sin(a) * r ];
}
Here's a working example.
Full code:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Testing Pie Chart</title>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.4.5"></script>
<style type="text/css">
.slice text {
font-size: 16pt;
font-family: Arial;
}
</style>
</head>
<body>
<script type="text/javascript">
var canvasWidth = 500, //width
canvasHeight = 500, //height
outerRadius = 150, //radius
//outerRadius = Math.min(canvasWidth, canvasHeight) / 2,
color = d3.scale.category20(); //builtin range of colors
innerRadius =0
var colorsArray = ['#0099ff','#cc00ff','#ff3366','#cc3300','#ff6600','#ffff33','#cccc00','#0066ff'];
var dataSet = [
{"legendLabel":"Testing Text Is", "magnitude":30,'score':4.8,width:20,color:colorsArray[0] },
{"legendLabel":"Two", "magnitude":8,'score':3.2,width:20,color:colorsArray[1] },
{"legendLabel":"Three", "magnitude":40,'score':3.9,width:20,color:colorsArray[2] },
{"legendLabel":"Four", "magnitude":50,'score':3.1,width:20,color:colorsArray[3] },
{"legendLabel":"Five", "magnitude":16,'score':4.2,width:20,color:colorsArray[4] },
{"legendLabel":"Six", "magnitude":50,'score':3.1,width:20,color:colorsArray[5] },
{"legendLabel":"Seven", "magnitude":30,'score':4.3,width:20,color:colorsArray[6] },
{"legendLabel":"Eight", "magnitude":20,'score':2.3,width:20,color:colorsArray[7] }
];
var vis = d3.select("body")
.append("svg:svg")
.data([dataSet])
.attr("width", canvasWidth)
.attr("height", canvasHeight)
.append("svg:g")
.attr("transform", "translate(" + 1.5*outerRadius + "," + 1.5*outerRadius + ")") // relocate center of pie to 'outerRadius,outerRadius'
var arc = d3.svg.arc()
.outerRadius(outerRadius);
var arc1 = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(function (d) {
return (outerRadius - innerRadius) * (d.data.score / 5.0) + innerRadius;
});
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.width; });
// Select all <g> elements with class slice (there aren't any yet)
var arcs = vis.selectAll("g.slice")
.data(pie)
.enter()
.append("svg:g")
.attr("class", "slice");
arcs.append("svg:path")
//set the color for each slice to be chosen from the color function defined above
.attr("fill", function(d, i) { return d.data.color; } )
//this creates the actual SVG path using the associated data (pie) with the arc drawing function
.attr("d", arc1);
var text = arcs.append("svg:text")
.attr("transform", function(d) {
d.outerRadius = outerRadius + 75;
d.innerRadius = outerRadius + 70;
return "translate(" + arc.centroid(d) + ")";
})
.attr("text-anchor", "middle") //center the text on it's origin
.style("fill", "black")
.style("font", "bold 12px Arial")
.each(function (d) {
var arr = d.data.legendLabel.split(" ");
if (arr != undefined) {
for (i = 0; i < arr.length; i++) {
d3.select(this).append("tspan")
.text(arr[i])
.attr("dy", i ? "1.2em" : 0)
.attr("x", 0)
.attr("text-anchor", "middle")
.attr("class", "tspan" + i);
}
}
});
//.text(function(d, i) { return dataSet[i].legendLabel; })
// .html(function(d, i) { return '<tspan>'+dataSet[i].legendLabel+'</tspan></n><tspan>'+dataSet[i].score+'</tspan>'})
/* arcs.append("foreignObject")
.attr("transform", function(d) {
d.outerRadius = outerRadius + 75;
d.innerRadius = outerRadius + 70;
return "translate(" + arc.centroid(d) + ")";
})
.attr("width", 50)
.attr("height", 50)
.append("xhtml:body")
.style("font", "14px 'Helvetica Neue'")
.html(function(d, i) { return dataSet[i].legendLabel+'<br>'+dataSet[i].score; });*/
</script>
</body>
</html>

html file + d3.js script file + input data manually in html file

I am new in d3.js language. I am trying to built a simple application but I stuck some where. I have a separate .js file jack.js which makes pie chart when you link it with html page.
Problem I want to use that file in every html page with different data. But i cant find the perfect solution of this. whenever page loaded in browser, file load its pie chart visualization. So can you suggest me what should i need to do?
HTML page
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3: Pie layout</title>
<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="lib/pie.js"></script>
<script>
dataset = [1,2,3,4,5];
</script>
</head>
<body>
</body>
</html> `
jack.js
//Width and height
var w = 300;
var h = 300;
var dataset = [ 5, 10, 20, 45, 6, 25 ];
var outerRadius = w / 2;
var innerRadius = 0;
var arc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius);
var pie = d3.layout.pie();
//Easy colors accessible via a 10-step ordinal scale
var color = d3.scale.category10();
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
//Set up groups
var arcs = svg.selectAll("g.arc")
.data(pie(dataset))
.enter()
.append("g")
.attr("class", "arc")
.attr("transform", "translate(" + outerRadius + "," + outerRadius + ")");
//Draw arc paths
arcs.append("path")
.attr("fill", function(d, i) {
return color(i);
})
.attr("d", arc);
//Labels
arcs.append("text")
.attr("transform", function(d) {
return "translate(" + arc.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text(function(d) {
return d.value;
});
<body>
<script type="text/javascript" src="lib/pie.js"></script>
<script>dataset = [1, 2, 3, 4, 5];</script>
</body>
This way you can do this.
Hi Remove var dataset = [ 5, 10, 20, 45, 6, 25 ]; from jack.js and put them either in your html file like you did in the head of your html file. Call jack.js in the body.
This will ensure that the data is loaded first before jack.js.
Hence your code will look like this
Html
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3: Pie layout</title>
<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
<script>dataset = [1, 2, 3, 4, 5];</script>
</head>
<body>
<script type="text/javascript" src="lib/pie.js"></script>
</body>
</html>
pie.js
var w = 300;
var h = 300;
var outerRadius = w / 2;
var innerRadius = 0;
var arc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius);
var pie = d3.layout.pie();
//Easy colors accessible via a 10-step ordinal scale
var color = d3.scale.category10();
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
//Set up groups
var arcs = svg.selectAll("g.arc")
.data(pie(dataset))
.enter()
.append("g")
.attr("class", "arc")
.attr("transform", "translate(" + outerRadius + "," + outerRadius + ")");
//Draw arc paths
arcs.append("path")
.attr("fill", function(d, i) {
return color(i);
})
.attr("d", arc);
//Labels
arcs.append("text")
.attr("transform", function(d) {
return "translate(" + arc.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text(function(d) {
return d.value;
});
Alternatively, you place wrap you d3 code in a $( document ).ready( //your d3 code here ) http://learn.jquery.com/using-jquery-core/document-ready/
Alternatively
pie.js
$( document ).ready(
// d3 code here
var pie = d3.layout.pie();
//Easy colors accessible via a 10-step ordinal scale
var color = d3.scale.category10();
....
)

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