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vega-leafer-chart

v0.1.0

Published

基于 Vega-Lite 规范和渲染导向解析树的数据可视化图表库

Readme

hetu-charts

基于 Vega-Lite 规范和渲染导向解析树的数据可视化图表库。

特性

  • 🎨 Vega-Lite 规范支持:完整支持 Vega-Lite 声明式语法
  • 🚀 高性能渲染:基于 leafer-ui 的高性能 Canvas 渲染
  • 🔧 模块化设计:Monorepo 架构,各模块独立可复用
  • 🎯 TypeScript:完整的类型定义
  • 🖱️ 丰富交互:支持 tooltip、selection、parameter 等交互功能

安装

npm install hetu-charts
# 或
pnpm add hetu-charts
# 或
yarn add hetu-charts

注意:安装 hetu-charts 时,npm 会自动安装以下外部依赖:

  • leafer-ui - Canvas 渲染引擎
  • d3-array, d3-format, d3-time-format, d3-shape - 数据处理和图形生成
  • vega-scale, vega-expression - Vega 生态工具

快速开始

ESM(推荐)

import { HetuChart } from "hetu-charts";

const chart = new HetuChart("#container");

chart.render({
  data: {
    values: [
      { category: "A", value: 28 },
      { category: "B", value: 55 },
      { category: "C", value: 43 },
    ],
  },
  mark: "bar",
  encoding: {
    x: { field: "category", type: "nominal" },
    y: { field: "value", type: "quantitative" },
  },
});

CommonJS

const { HetuChart } = require("hetu-charts");

const chart = new HetuChart("#container");

chart.render({
  data: {
    values: [
      { category: "A", value: 28 },
      { category: "B", value: 55 },
      { category: "C", value: 43 },
    ],
  },
  mark: "bar",
  encoding: {
    x: { field: "category", type: "nominal" },
    y: { field: "value", type: "quantitative" },
  },
});

TypeScript

import { HetuChart, VegaLiteSpec } from "hetu-charts";

const spec: VegaLiteSpec = {
  data: {
    values: [
      { category: "A", value: 28 },
      { category: "B", value: 55 },
      { category: "C", value: 43 },
    ],
  },
  mark: "bar",
  encoding: {
    x: { field: "category", type: "nominal" },
    y: { field: "value", type: "quantitative" },
  },
};

const chart = new HetuChart("#container");
chart.render(spec);

Bundle 大小

  • ESM: ~395 KB (未压缩) / ~97 KB (gzip)
  • CJS: ~235 KB (未压缩) / ~64 KB (gzip)

外部依赖(由 npm 自动管理)不计入以上大小。

浏览器兼容性

支持所有现代浏览器:

  • Chrome ≥ 90
  • Firefox ≥ 88
  • Safari ≥ 14
  • Edge ≥ 90

注意:需要浏览器支持 ES2015+ 和 Canvas API。

子包

本项目采用 Monorepo 架构,包含以下子包:

  • @hetu-charts/share: 共享类型、常量和工具函数
  • @hetu-charts/parser: Vega-Lite 规范解析器
  • @hetu-charts/scale: 比例尺构建器
  • @hetu-charts/analysis-tree: 渲染导向解析树构建器
  • @hetu-charts/renderer: 渲染器实现
  • @hetu-charts/interaction: 交互功能实现

License

MIT