Published
Edited
Aug 18, 2022
1 fork
基础的饼图练习
fruits = [
{name: "🍊", count: 21},
{name: "🍇", count: 13},
{name: "🍏", count: 8},
{name: "🍌", count: 5},
{name: "🍐", count: 3},
{name: "🍋", count: 2},
{name: "🍎", count: 1},
{name: "🍉", count: 1}
]
htl.html`<svg viewBox="-320 -320 640 640" style="max-width: 640px">
${Array.from({ length: n }).map((_, i) => htl.svg`<path stroke="black" fill="${d3.interpolateRainbow(i / n)}" d=${arc([i * perAngle, (i + 1) * perAngle])} />`)}
</svg>`
perAngle = 360 / n * R
R = Math.PI / 180
pieData = d3.pie()
.value(d => d.count)(fruits)
arc2 = d3.arc()
.innerRadius(200)
.outerRadius(300)
// 圆角
.cornerRadius(10)
// 间隔角度
.padRadius(300)
.padAngle(2 / 300)
htl.html`<svg viewBox="-320 -320 640 640" style="max-width: 640px">
${pieData.map((d, i) => htl.svg`<path stroke="black" fill="${d3.interpolateRainbow(i/pieData.length)}" d="${arc2(d)}" />
<text fill="white" transform="translate(${arc2.centroid(d).join(',')})" text-anchor="middle">
<tspan x="0" font-size="24">${d.data.name}</tspan>
<tspan x="0" font-size="12" dy="1.3em">${d.data.count}</tspan>
</text>
`)}
</svg>`
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