Simple Pie Chart / johnfischbeck

Public

Edited

May 20, 2023

# Simple Pie Chart

pieChart = {

const svg = d3.create('svg').attr('height', sizes.height).attr('width', sizes.width)

const container = svg.append('g').attr('transform', `translate(${sizes.width/2}, ${sizes.height/2})`)

const colors = d3.scaleOrdinal()

.domain(data.map(d => d.name))

.range(d3.schemeCategory10)

const pie = d3.pie()

const pieData = pie.value(d=> d.value)(data)

const segments = d3.arc()

.innerRadius(80)

.outerRadius(170)

.padAngle(.5)

.padRadius(10)

.cornerRadius(4)

//Rendering sections

let sections = container.selectAll('path').data(pieData, d => d.data.name)

sections.exit().remove()

const sectionsEnter = sections.enter().append('path').attr("d", segments).attr('fill', d => colors(d.data.name))

sections = sectionsEnter.merge(sections)

sections

.on('mouseover', function() {

d3.select(this).transition().duration(500).attr('transform', 'scale(1.05)')

})

.on('mouseout', function() {

d3.select(this).transition().duration(500).attr('transform', 'scale(1)')

})

return svg.node()

}

## Sizes

sizes = ({height: 400, width: 400})

## Data

data = [{name: 'Apples', value: 30}, {name: 'Bananas', value: 60}, {name: 'Oranges', value: 10}]

## Utils

d3 = require('d3')

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