颜色渐变

script setup

import type { ScatterSeriesOption } from "echarts/charts";
import { ScatterChart } from "echarts/charts";
import type { GridComponentOption, LegendComponentOption } from "echarts/components";
import { GridComponent, LegendComponent } from "echarts/components";
import type { ComposeOption } from "echarts/core";
import * as echarts from "echarts/core";
import { CanvasRenderer } from "echarts/renderers";
import { GLOBAL_OPTION } from "../echarts";

type EChartsOption = ComposeOption<
  | LegendComponentOption
  | GridComponentOption
  | ScatterSeriesOption
>;

definePage({
  style: {
    navigationBarTitleText: "颜色渐变"
  }
});

echarts.use([
  LegendComponent,
  GridComponent,
  ScatterChart,
  CanvasRenderer
]);

const data = [
  [
    [28604, 77, 17096869, "Australia", 1990],
    [31163, 77.4, 27662440, "Canada", 1990],
    [1516, 68, 1154605773, "China", 1990],
    [13670, 74.7, 10582082, "Cuba", 1990],
    [28599, 75, 4986705, "Finland", 1990],
    [29476, 77.1, 56943299, "France", 1990],
    [31476, 75.4, 78958237, "Germany", 1990],
    [28666, 78.1, 254830, "Iceland", 1990],
    [1777, 57.7, 870601776, "India", 1990],
    [29550, 79.1, 122249285, "Japan", 1990],
    [2076, 67.9, 20194354, "North Korea", 1990],
    [12087, 72, 42972254, "South Korea", 1990],
    [24021, 75.4, 3397534, "New Zealand", 1990],
    [43296, 76.8, 4240375, "Norway", 1990],
    [10088, 70.8, 38195258, "Poland", 1990],
    [19349, 69.6, 147568552, "Russia", 1990],
    [10670, 67.3, 53994605, "Turkey", 1990],
    [26424, 75.7, 57110117, "United Kingdom", 1990],
    [37062, 75.4, 252847810, "United States", 1990]
  ],
  [
    [44056, 81.8, 23968973, "Australia", 2015],
    [43294, 81.7, 35939927, "Canada", 2015],
    [13334, 76.9, 1376048943, "China", 2015],
    [21291, 78.5, 11389562, "Cuba", 2015],
    [38923, 80.8, 5503457, "Finland", 2015],
    [37599, 81.9, 64395345, "France", 2015],
    [44053, 81.1, 80688545, "Germany", 2015],
    [42182, 82.8, 329425, "Iceland", 2015],
    [5903, 66.8, 1311050527, "India", 2015],
    [36162, 83.5, 126573481, "Japan", 2015],
    [1390, 71.4, 25155317, "North Korea", 2015],
    [34644, 80.7, 50293439, "South Korea", 2015],
    [34186, 80.6, 4528526, "New Zealand", 2015],
    [64304, 81.6, 5210967, "Norway", 2015],
    [24787, 77.3, 38611794, "Poland", 2015],
    [23038, 73.13, 143456918, "Russia", 2015],
    [19360, 76.5, 78665830, "Turkey", 2015],
    [38225, 81.4, 64715810, "United Kingdom", 2015],
    [53354, 79.1, 321773631, "United States", 2015]
  ]
];

const option = ref({
  ...GLOBAL_OPTION,
  legend: {
    top: 10,
    right: 10,
    data: ["1990", "2015"]
  },
  grid: {
    top: 40,
    right: 30,
    bottom: 10,
    left: 10,
    outerBoundsMode: "same",
    outerBoundsContain: "axisLabel"
  },
  xAxis: {
    splitLine: {
      lineStyle: {
        type: "dashed"
      }
    }
  },
  yAxis: {
    splitLine: {
      lineStyle: {
        type: "dashed"
      }
    },
    scale: true
  },
  series: [
    {
      type: "scatter",
      name: "1990",
      data: data[0],
      symbolSize(data) {
        return Math.sqrt(data[2]) / 5e2;
      },
      emphasis: {
        label: {
          show: true,
          position: "top",
          formatter({ data }) {
            // @ts-expect-error whatever
            return data[3];
          }
        }
      },
      itemStyle: {
        shadowOffsetY: 5,
        shadowBlur: 10,
        shadowColor: "rgba(120, 36, 50, 0.5)",
        color: {
          type: "radial",
          x: 0.4,
          y: 0.3,
          r: 1,
          colorStops: [
            { offset: 0, color: "rgb(251, 118, 123)" },
            { offset: 1, color: "rgb(204, 46, 72)" }
          ],
          global: true
        }
      }
    },
    {
      type: "scatter",
      name: "2015",
      data: data[1],
      symbolSize(data) {
        return Math.sqrt(data[2]) / 5e2;
      },
      emphasis: {
        label: {
          show: true,
          position: "top",
          formatter({ data }) {
            // @ts-expect-error whatever
            return data[3];
          }
        }
      },
      itemStyle: {
        shadowOffsetY: 5,
        shadowBlur: 10,
        shadowColor: "rgba(25, 100, 150, 0.5)",
        color: {
          type: "radial",
          x: 0.4,
          y: 0.3,
          r: 1,
          colorStops: [
            { offset: 0, color: "rgb(129, 227, 238)" },
            { offset: 1, color: "rgb(25, 183, 207)" }
          ],
          global: true
        }
      }
    }
  ]
} satisfies EChartsOption);

template

<app-page>
  <uni-echarts custom-class="h-60" :option="option" autoresize></uni-echarts>
</app-page>

global

export const GLOBAL_OPTION = {
  textStyle: {
    fontFamily: `MiSans, Inter, "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif`
  }
};