karen-izuka/README.md

## README.md

      
    Raw
  

              README.md
            
          
    test

  
## data.csv

          
            letter
            value

            
              A
              .08167

            
              B
              .01492

            
              C
              .02780

            
              D
              .04253

            
              E
              .12702

            
              F
              .02288

            
              G
              .02022

            
              H
              .06094

            
              I
              .06973

            
              J
              .00153

            
              K
              .00747

            
              L
              .04025

            
              M
              .02517

            
              N
              .06749

            
              O
              .07507

            
              P
              .01929

            
              Q
              .00098

            
              R
              .05987

            
              S
              .06333

            
              T
              .09056

            
              U
              .02758

            
              V
              .01037

            
              W
              .02465

            
              X
              .00150

            
              Y
              .01971

            
              Z
              .00074

## index.html
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Simple Bar Chart</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <h1>Simple Bar Chart</h1>
  <div id="chart"></div>
  <script src="https://d3js.org/d3.v5.min.js"></script>
  <script src="index.js"></script>
</body>
</html>

## index.js
//load data
const load = async () => {
  const data = await d3.csv('data.csv', ({letter, value}) => ({
    letter: letter, value: +value
  }));
  chart(data);
}

//chart function
const chart = (data) => {
  const margin = {top: 25, right: 25, bottom: 25, left: 25};
  const width = 1250 - margin.left - margin.right;
  const height = 600 - margin.top - margin.bottom;
  const format = d3.format('.1%');
  const 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})`);
  const x = d3.scaleBand()
    .domain(data.map(d => d.letter))
    .range([0, width])
    .padding(0.1);
  const y = d3.scaleLinear()
    .domain([0, d3.max(data, d => d.value)])
    .range([height, 0]);
  const xAxis = g => g
    .call(d3.axisBottom(x).tickSizeOuter(0));
  const bar = svg.selectAll('.rect')
    .data(data)
    .join('rect')
    .attr('class', 'rect')
    .attr('x', d => x(d.letter))
    .attr('y', d => y(d.value))
    .attr('width', x.bandwidth())
    .attr('height', d => y(0)-y(d.value));
  const label = svg.selectAll('.label')
    .data(data)
    .join('text')
    .text(d => format(d.value))
    .attr('class', 'label')
    .attr('x', d => x(d.letter) + x.bandwidth()/2)
    .attr('y', d => y(d.value) - 10)
    .attr('text-anchor', 'middle');
  const gx = svg.append('g')
    .attr('class', 'axis')
    .attr('transform', `translate(0, ${height})`)
    .call(xAxis);
}

load();

## style.css
h1 {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 24px;
  text-align: center;
  text-rendering: optimizeLegibility;
}

svg {
  display: block;
  margin: auto;
}

.axis font {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 12px;
  text-rendering: optimizeLegibility;
}

.label {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 12px;
  text-rendering: optimizeLegibility;
}

.rect {
  fill: #e1bee7;
  shape-rendering: geometricPrecision;
}
	letter	value
	A	.08167
	B	.01492
	C	.02780
	D	.04253
	E	.12702
	F	.02288
	G	.02022
	H	.06094
	I	.06973
	J	.00153
	K	.00747
	L	.04025
	M	.02517
	N	.06749
	O	.07507
	P	.01929
	Q	.00098
	R	.05987
	S	.06333
	T	.09056
	U	.02758
	V	.01037
	W	.02465
	X	.00150
	Y	.01971
	Z	.00074
	<!doctype html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<title>Simple Bar Chart</title>
	<link rel="stylesheet" href="style.css">
	</head>
	<body>
	<h1>Simple Bar Chart</h1>
	<div id="chart"></div>
	<script src="https://d3js.org/d3.v5.min.js"></script>
	<script src="index.js"></script>
	</body>
	</html>
	//load data
	const load = async () => {
	const data = await d3.csv('data.csv', ({letter, value}) => ({
	letter: letter, value: +value
	}));
	chart(data);
	}

	//chart function
	const chart = (data) => {
	const margin = {top: 25, right: 25, bottom: 25, left: 25};
	const width = 1250 - margin.left - margin.right;
	const height = 600 - margin.top - margin.bottom;
	const format = d3.format('.1%');
	const 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})`);
	const x = d3.scaleBand()
	.domain(data.map(d => d.letter))
	.range([0, width])
	.padding(0.1);
	const y = d3.scaleLinear()
	.domain([0, d3.max(data, d => d.value)])
	.range([height, 0]);
	const xAxis = g => g
	.call(d3.axisBottom(x).tickSizeOuter(0));
	const bar = svg.selectAll('.rect')
	.data(data)
	.join('rect')
	.attr('class', 'rect')
	.attr('x', d => x(d.letter))
	.attr('y', d => y(d.value))
	.attr('width', x.bandwidth())
	.attr('height', d => y(0)-y(d.value));
	const label = svg.selectAll('.label')
	.data(data)
	.join('text')
	.text(d => format(d.value))
	.attr('class', 'label')
	.attr('x', d => x(d.letter) + x.bandwidth()/2)
	.attr('y', d => y(d.value) - 10)
	.attr('text-anchor', 'middle');
	const gx = svg.append('g')
	.attr('class', 'axis')
	.attr('transform', `translate(0, ${height})`)
	.call(xAxis);
	}

	load();
	h1 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 24px;
	text-align: center;
	text-rendering: optimizeLegibility;
	}

	svg {
	display: block;
	margin: auto;
	}

	.axis font {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	text-rendering: optimizeLegibility;
	}

	.label {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	text-rendering: optimizeLegibility;
	}

	.rect {
	fill: #e1bee7;
	shape-rendering: geometricPrecision;
	}