Andrew-Reid/index.html

## readme.md

      
    Raw
  

              readme.md
            
          
    Based on a question at stack overflow, regarding multiple pie charts on a map.
http://stackoverflow.com/questions/41949622/piechart-over-a-map-point-using-d3-js

  
## index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">

	<style>
		svg {
			background: #9ecae1;
		}

		.mesh {
			fill:none;
			stroke: white;
			stroke-width: 0.5px;
		}

		.land {
			fill: #41ab5d;
		}

	</style>
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://d3js.org/topojson.v1.min.js"></script>
</head>
<body>


    <script type="text/javascript">

var width = 960;
	height = 500;

var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

var projection = d3.geoMercator().center([81,22]).scale(800).translate([width/2,height/2]);
var path = d3.geoPath().projection(projection);

var g1 = svg.append("g");

 d3.json("world.json", function(error, world) {

	g1.insert("path", ".land")
		.datum(topojson.feature(world, world.objects.countries))
		.attr("class", "land")
		.attr("d", path);

	 g1.append("path")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "mesh")
      .attr("d", path);

});

var g2 = svg.append("g");

var arc = d3.arc()
			.innerRadius(0)
			.outerRadius(30);

var pie = d3.pie()
			.sort(null)
			.value(function(d) { return d; });

var color = d3.schemeCategory10;


d3.csv("water.csv", function(error, water) {

	// Append one g element for each row in the csv and bind data to it:
	var points = g2.selectAll("g")
		.data(water)
		.enter()
		.append("g")
		.attr("transform",function(d) { return "translate("+projection([d.lon,d.lat])+")" })
		.attr("id", function (d,i) { return "chart"+i; })
		.append("g").attr("class","pies");

	// Add a circle to it if needed
	points.append("circle")
		.attr("r", 3)
        .style("fill", "red");

    // Select each g element we created, and fill it with pie chart:
	var pies = points.selectAll(".pies")
		.data(pie([0,15,30,35,20])) // I'm unsure why I need the leading 0.
		.enter()
		.append('g')
		.attr('class','arc');

	pies.append("path")
	  .attr('d',arc)
      .attr("fill",function(d,i){
           return color[i];
      });
});


</script>
</body>

## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## water.csv

          
            lon
            lat
            quality
            complaints
            data
            label

            
              80.06
              20.07
              4
              17
              15-25-35-25
              label1

            
              72.822
              18.968
              2
              62
              20-40-30-10
              label2

            
              77.216
              28.613
              5
              49
              25-20-30-25
              label3

            
              92.79
              87.208
              4
              3
              50-10-12-18
              label4

            
              87.208
              21.813
              1
              12
              10-40-40-10
              label5

            
              77.589
              12.987
              2
              54
              10-20-40-30
              label6

            
              16.320
              75.724
              4
              7
              5-5-20-70
              label7

## world.json

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              world.json
            
          
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	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">

	<style>
	svg {
	background: #9ecae1;
	}

	.mesh {
	fill:none;
	stroke: white;
	stroke-width: 0.5px;
	}

	.land {
	fill: #41ab5d;
	}

	</style>
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://d3js.org/topojson.v1.min.js"></script>
	</head>
	<body>


	<script type="text/javascript">

	var width = 960;
	height = 500;

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	var projection = d3.geoMercator().center([81,22]).scale(800).translate([width/2,height/2]);
	var path = d3.geoPath().projection(projection);

	var g1 = svg.append("g");

	d3.json("world.json", function(error, world) {

	g1.insert("path", ".land")
	.datum(topojson.feature(world, world.objects.countries))
	.attr("class", "land")
	.attr("d", path);

	g1.append("path")
	.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
	.attr("class", "mesh")
	.attr("d", path);

	});

	var g2 = svg.append("g");

	var arc = d3.arc()
	.innerRadius(0)
	.outerRadius(30);

	var pie = d3.pie()
	.sort(null)
	.value(function(d) { return d; });

	var color = d3.schemeCategory10;


	d3.csv("water.csv", function(error, water) {

	// Append one g element for each row in the csv and bind data to it:
	var points = g2.selectAll("g")
	.data(water)
	.enter()
	.append("g")
	.attr("transform",function(d) { return "translate("+projection([d.lon,d.lat])+")" })
	.attr("id", function (d,i) { return "chart"+i; })
	.append("g").attr("class","pies");

	// Add a circle to it if needed
	points.append("circle")
	.attr("r", 3)
	.style("fill", "red");

	// Select each g element we created, and fill it with pie chart:
	var pies = points.selectAll(".pies")
	.data(pie([0,15,30,35,20])) // I'm unsure why I need the leading 0.
	.enter()
	.append('g')
	.attr('class','arc');

	pies.append("path")
	.attr('d',arc)
	.attr("fill",function(d,i){
	return color[i];
	});
	});






	</script>
	</body>
lon	lat	quality	complaints	data	label
80.06	20.07	4	17	15-25-35-25	label1
72.822	18.968	2	62	20-40-30-10	label2
77.216	28.613	5	49	25-20-30-25	label3
92.79	87.208	4	3	50-10-12-18	label4
87.208	21.813	1	12	10-40-40-10	label5
77.589	12.987	2	54	10-20-40-30	label6
16.320	75.724	4	7	5-5-20-70	label7