Amcharts5 堆叠条形图中的可点击标签

Question

我正在尝试向堆叠条形图添加单击图表左侧标签的功能，但没有效果。网上有一些关于如何给标签添加 link 的帖子，但是它们是针对 Amcharts4 的，在 Amcharts5 上不起作用。

我有这样的图表：https://www.amcharts.com/demos/stacked-bar-chart/ 我希望左侧的标签“2021”、“2022”和“2023”可以点击（带有任何 links）。

尝试使用渲染器执行此操作失败（也许我在错误的元素上执行此操作），在标签中插入 HTML 会导致显示 HTML 代码，而不是在 link.

以下是网站上的代码：

import am4themes_https://cdn.amcharts.com/lib/5/Animated from "@amcharts/amcharts4/themes/https://cdn.amcharts.com/lib/5/Animated";

/* Chart code */
// Create root element
// https://www.amcharts.com/docs/v5/getting-started/#Root_element
let root = am5.Root.new("chartdiv");

// Set themes
// https://www.amcharts.com/docs/v5/concepts/themes/
root.setThemes([
  am5themes_Animated.new(root)
]);

// Create chart
// https://www.amcharts.com/docs/v5/charts/xy-chart/
let chart = root.container.children.push(am5xy.XYChart.new(root, {
  panX: false,
  panY: false,
  wheelX: "panY",
  wheelY: "zoomY",
  layout: root.verticalLayout
}));

// Add scrollbar
// https://www.amcharts.com/docs/v5/charts/xy-chart/scrollbars/
chart.set("scrollbarY", am5.Scrollbar.new(root, {
  orientation: "vertical"
}));

let data = [{
  "year": "2021",
  "europe": 2.5,
  "namerica": 2.5,
  "asia": 2.1,
  "lamerica": 1,
  "meast": 0.8,
  "africa": 0.4
}, {
  "year": "2022",
  "europe": 2.6,
  "namerica": 2.7,
  "asia": 2.2,
  "lamerica": 0.5,
  "meast": 0.4,
  "africa": 0.3
}, {
  "year": "2023",
  "europe": 2.8,
  "namerica": 2.9,
  "asia": 2.4,
  "lamerica": 0.3,
  "meast": 0.9,
  "africa": 0.5
}]

// Create axes
// https://www.amcharts.com/docs/v5/charts/xy-chart/axes/
let yAxis = chart.yAxes.push(am5xy.CategoryAxis.new(root, {
  categoryField: "year",
  renderer: am5xy.AxisRendererY.new(root, {}),
  tooltip: am5.Tooltip.new(root, {})
}));

yAxis.data.setAll(data);

let xAxis = chart.xAxes.push(am5xy.ValueAxis.new(root, {
  min: 0,
  renderer: am5xy.AxisRendererX.new(root, {})
}));


// Add legend
// https://www.amcharts.com/docs/v5/charts/xy-chart/legend-xy-series/
let legend = chart.children.push(am5.Legend.new(root, {
  centerX: am5.p50,
  x: am5.p50
}));

// Add series
// https://www.amcharts.com/docs/v5/charts/xy-chart/series/
function makeSeries(name, fieldName) {
  let series = chart.series.push(am5xy.ColumnSeries.new(root, {
    name: name,
    stacked: true,
    xAxis: xAxis,
    yAxis: yAxis,
    baseAxis: yAxis,
    valueXField: fieldName,
    categoryYField: "year"
  }));

  series.columns.template.setAll({
    tooltipText: "{name}, {categoryY}: {valueX}",
    tooltipY: am5.percent(90)
  });
  series.data.setAll(data);

  // Make stuff animate on load
  // https://www.amcharts.com/docs/v5/concepts/animations/
  series.appear();

  series.bullets.push(function () {
    return am5.Bullet.new(root, {
      sprite: am5.Label.new(root, {
        text: "{valueX}",
        fill: root.interfaceColors.get("alternativeText"),
        centerY: am5.p50,
        centerX: am5.p50,
        populateText: true
      })
    });
  });

  legend.data.push(series);
}

makeSeries("Europe", "europe");
makeSeries("North America", "namerica");
makeSeries("Asia", "asia");
makeSeries("Latin America", "lamerica");
makeSeries("Middle East", "meast");
makeSeries("Africa", "africa");

// Make stuff animate on load
// https://www.amcharts.com/docs/v5/concepts/animations/
chart.appear(1000, 100);

如有任何建议，我将不胜感激:)

Answer 1

我之前刚刚创建了自己的点击事件，同时防止了图表可能发生的任何默认情况。您可以在实例化后向 AM 图表添加点击事件，然后您只需点击打开模态或工具或其他东西，您可以使用 CSS 正确定位它。

Answer 2

如doc所述。如果我们想让标签具有交互性，我们需要为其添加背景。

The background does not necessarily have to be visible: we can just set its fillOpacity: 0 to make it completely transparent.

试试这个：

yAxis.get("renderer").labels.template.setup = function(target) {
  target.set("background", am5.Rectangle.new(root, {
    fill: am5.color(0xff0000),
     fillOpacity: 0
  }))
}

yAxis.get("renderer").labels.template.events.on("click", function(ev) {
  console.log("Label", ev.target);
});

Working Example

Amcharts5 堆叠条形图中的可点击标签

Clickable label in Amcharts5 Stacked Bar Chart

javascript

typescript

amcharts

amcharts5