HarryStevens/.block

## .block
license: gpl-3.0

## README.md

      
    Raw
  

              README.md
            
          
    Use d3.scaleBand() to create a bar chart, then apply styles to a category of bars to provide visual "popout." See pp.39-40 of this slideshow for a brief discussion of visual popout.

  
## data.csv

          
            name
            value
            category

            
              Andrew
              95.77
              A

            
              Matthew
              103.62
              A

            
              Mark
              94.2
              A

            
              Luke
              91.06
              A

            
              John
              76.93
              A

            
              Jimmy
              65.94
              B

            
              Bill
              64.37
              A

            
              Bob
              54.95
              A

            
              Kate
              74.93
              A

            
              Alice
              35.13
              A

            
              Sally
              85.74
              B

            
              Mary
              25.83
              B

            
              Jenny
              23.65
              A

            
              Barbara
              13.05
              A

## index.html
<html>
	<head>
		<style>
			body {
			  font-family: "Helvetica Neue", sans-serif;
			  width: 607.141px;
			  margin: 0 auto;
			  display: table;
			}
		</style>
	</head>
	<body>

		<div class="chart"></div>

		<script src="https://d3js.org/d3.v4.min.js"></script>
		<script src="scripts.js"></script>

	</body>
</html>

## scripts.js
var margin = {top: 0, right: 150, bottom: 0, left: 0},
  width = 607.141 - margin.left - margin.right,
  height = 300 - margin.top - margin.bottom;

var svg = d3.select(".chart").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 + ")");

var x = d3.scaleLinear()
    .range([0,width]);

var y = d3.scaleBand()
    .rangeRound([height,0])
    .padding(0.2)

d3.csv("data.csv",types,function(error,data){

  if (error) throw error;

  data.sort(function(a,b){
    return a.value-b.value;
  });

  x.domain([0,d3.max(data, function(d){ return d.value; })]);
  y.domain(data.map(function(d) { return d.name; }));

  svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", 0)
      .attr("y", function(d){ return y(d.name); })
      .attr("width", function(d){ return x(d.value); })
      .attr("height", y.bandwidth())
      .style("fill", function(d){ d.category === 'A' ? fill = "#CCC" : fill =  "#B44682"; return fill; });

  svg.selectAll(".bar-label")
      .data(data)
    .enter().append("text")
      .attr("class", "bar-label")
      .attr("x", function(d){ return x(d.value) + 3; })
      .attr("y", function(d){ return y(d.name); })
      .attr("dy", y.bandwidth()-2)
      .attr("text-anchor", "start")
      .text(function(d,i){ return d.name + " (" + d.value + ")"; })
      .style('font-weight', function(d){ d.category === 'A' ? fontWeight = '400' : fontWeight = '900'; return fontWeight; });

});

function types(d){
  d.value = +d.value;
  return d;
}

## thumbnail.png

      
    Raw
  

              thumbnail.png
name	value	category
Andrew	95.77	A
Matthew	103.62	A
Mark	94.2	A
Luke	91.06	A
John	76.93	A
Jimmy	65.94	B
Bill	64.37	A
Bob	54.95	A
Kate	74.93	A
Alice	35.13	A
Sally	85.74	B
Mary	25.83	B
Jenny	23.65	A
Barbara	13.05	A
	<html>
	<head>
	<style>
	body {
	font-family: "Helvetica Neue", sans-serif;
	width: 607.141px;
	margin: 0 auto;
	display: table;
	}
	</style>
	</head>
	<body>

	<div class="chart"></div>

	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="scripts.js"></script>

	</body>
	</html>
	var margin = {top: 0, right: 150, bottom: 0, left: 0},
	width = 607.141 - margin.left - margin.right,
	height = 300 - margin.top - margin.bottom;

	var svg = d3.select(".chart").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 + ")");

	var x = d3.scaleLinear()
	.range([0,width]);

	var y = d3.scaleBand()
	.rangeRound([height,0])
	.padding(0.2)

	d3.csv("data.csv",types,function(error,data){

	if (error) throw error;

	data.sort(function(a,b){
	return a.value-b.value;
	});

	x.domain([0,d3.max(data, function(d){ return d.value; })]);
	y.domain(data.map(function(d) { return d.name; }));

	svg.selectAll(".bar")
	.data(data)
	.enter().append("rect")
	.attr("class", "bar")
	.attr("x", 0)
	.attr("y", function(d){ return y(d.name); })
	.attr("width", function(d){ return x(d.value); })
	.attr("height", y.bandwidth())
	.style("fill", function(d){ d.category === 'A' ? fill = "#CCC" : fill = "#B44682"; return fill; });

	svg.selectAll(".bar-label")
	.data(data)
	.enter().append("text")
	.attr("class", "bar-label")
	.attr("x", function(d){ return x(d.value) + 3; })
	.attr("y", function(d){ return y(d.name); })
	.attr("dy", y.bandwidth()-2)
	.attr("text-anchor", "start")
	.text(function(d,i){ return d.name + " (" + d.value + ")"; })
	.style('font-weight', function(d){ d.category === 'A' ? fontWeight = '400' : fontWeight = '900'; return fontWeight; });

	});

	function types(d){
	d.value = +d.value;
	return d;
	}