Plotly.js
Plotly.js 是一个图表库，包含 40 多种图表类型:
- 水平条形图和垂直条形图
- 饼图和环形图
- 折线图
- 散点图和气泡图
- 方程图
- 3D 图表
- 统计图
- SVG 地图
- ...
Plotly.js 是一个免费开源项目，采用 MIT 许可证。安装和使用都是免费的。您可以通过 GitHub 查看源代码、报告问题并做出贡献。
柱状图
源代码
const xArray = ["Italy","France","Spain","USA","Argentina"];
const yArray = [55, 49, 44, 24, 15];
const data = [{
x: xArray,
y: yArray,
type: "bar",
orientation:"v",
marker: {color:"rgba(0,0,255)"}
}];
const layout = {title:"World Wide Wine Production"};
Plotly.newPlot("myPlot", data, layout);
水平柱状图
源代码
const xArray = [55, 49, 44, 24, 15];
const yArray = ["Italy","France","Spain","USA","Argentina"];
const data = [{
x: xArray,
y: yArray,
type: "bar",
orientation: "h",
marker: {color:"rgba(255,0,0,0.6)"}
}];
const layout = {title:"World Wide Wine Production"};
Plotly.newPlot("myPlot", data, layout);
饼图
要显示饼图而不是柱状图，请将 x 和 y 分别更改为标签和值，并将类型更改为"pie":
const data = [{
labels: xArray,
values: yArray,
type: "pie"
}];
甜甜圈图
要显示甜甜圈而不是馅饼，请添加一个洞:
const data = [{
labels: xArray,
values: yArray,
hole: .4,
type: "pie"
}];
绘制方程
源代码
let exp = "Math.sin(x)";
// 生成值
const xValues = [];
const yValues = [];
for (let x = 0; x<= 10; x += 0.1) {
xValues.push(x);
yValues.push(eval(exp));
}
// 使用 Plotly 显示
const data = [{x:xValues, y:yValues, mode:"lines"}];
const layout = {title: "y = " + exp};
Plotly.newPlot("myPlot", data, layout);亲自试一试 »要显示散点图，请将模式更改为标记:
// 使用 Plotly 显示
const data = [{x:xValues, y:yValues, mode:"markers"}];
const layout = {title: "y = " + exp};
Plotly.newPlot("myPlot", data, layout);亲自试一试 »散点图
源代码
const xArray = [50,60,70,80,90,100,110,120,130,140,150];
const yArray = [7,8,8,9,9,9,10,11,14,14,15];
// 定义数据
const data = [{
x: xArray,
y: yArray,
mode:"markers",
type:"scatter"
}];
// 定义布局
const layout = {
xaxis: {range: [40, 160], title: "Square Meters"},
yaxis: {range: [5, 16], title: "Price in Millions"},
title: "House Prices vs. Size"
};
Plotly.newPlot("myPlot", data, layout);
折线图
源代码
const xArray = [50,60,70,80,90,100,110,120,130,140,150];
const yArray = [7,8,8,9,9,9,10,11,14,14,15];
// 定义数据
const data = [{
x: xArray,
y: yArray,
mode: "lines",
type: "scatter"
}];
// 定义布局
const layout = {
xaxis: {range: [40, 160], title: "Square Meters"},
yaxis: {range: [5, 16], title: "Price in Millions"},
title: "House Prices vs Size"
};
// 使用 Plotly 显示
Plotly.newPlot("myPlot", data, layout);
气泡图
气泡图是一种散点图，其标记的颜色、大小和符号均可变化。
它是一种三维图表，只有两个轴(x 轴和 y 轴)，气泡的大小代表第三个维度。
源代码
const xArray = [1,2,3,4];
const yArray = [10,20,30,40];
const trace1 = {
x: xArray,
y: yArray,
mode: 'markers',
marker: {
color: ['red', 'green', 'blue', 'orange'],
size: [20, 30, 40, 50]
}
};
const data = [trace1];
const layout = {
title: "Plotting Bubbles"
};
Plotly.newPlot('myPlot', data, layout);
线性图
源代码
let exp = "x + 17";
// 生成值
const xValues = [];
const yValues = [];
for (let x = 0; x<= 10; x += 1) {
yValues.push(eval(exp));
xValues.push(x);
}
// 定义数据
const data = [{
x: xValues,
y: yValues,
mode: "lines"
}];
// 定义布局
const layout = {title: "y = " + exp};
// 使用 Plotly 显示
Plotly.newPlot("myPlot", data, layout);
多行
源代码
let exp1 = "x";
let exp2 = "1.5*x";
let exp3 = "1.5*x + 7";
// 生成值
const x1Values = [];
const x2Values = [];
const x3Values = [];
const y1Values = [];
const y2Values = [];
const y3Values = [];
for (let x = 0; x<= 10; x += 1) {
x1Values.push(x);
x2Values.push(x);
x3Values.push(x);
y1Values.push(eval(exp1));
y2Values.push(eval(exp2));
y3Values.push(eval(exp3));
}
// 定义数据
const data = [
{x: x1Values, y: y1Values, mode:"lines"},
{x: x2Values, y: y2Values, mode:"lines"},
{x: x3Values, y: y3Values, mode:"lines"}
];
// 定义布局
const layout = {title: "[y=" + exp1 + "] [y=" + exp2 + "] [y=" + exp3 + "]"};
// 使用 Plotly 显示
Plotly.newPlot("myPlot", data, layout);
