CanvasJS 图形上的交互式垂直线注释

Question

我正在尝试以类似于 dygraphs 的功能 (example here) but haven't found a way to. I've seen an example where they replaced a point with an image (here) 的方式向我的 CanvasJS 图形添加注释，但它并不完全相同，因为我需要点之间的标记并且有它是自己的工具提示。在 CanvasJS 中有什么方法可以做到这一点吗？

Answer 1

您可以使用 indexLabels along with indexLabelLineThickness 来显示注释，但工具提示仅针对数据点显示。

var chart = new CanvasJS.Chart("chartContainer", {
title: {
 text: "Line Chart with Index-Labels"
},
data: [{
 type: "line",
 indexLabelBackgroundColor: "LightBlue",
 indexLabelLineThickness: 1,    
 dataPoints: [
  { x: 10, y: 71 },
  { x: 20, y: 55, indexLabel: "{y}" },
  { x: 30, y: 50 },
  { x: 40, y: 65 },
  { x: 50, y: 95 },
  { x: 60, y: 68, indexLabel: "{y}" },
  { x: 70, y: 28 },
  { x: 80, y: 34, indexLabel: "{y}" },
  { x: 90, y: 14 }
 ]
}]
});

chart.render();

<script type="text/javascript" src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<div id="chartContainer" style="height: 250px; width: 100%;"></div>

CanvasJS 图形上的交互式垂直线注释

Interactive, vertical line annotations on CanvasJS graph

javascript

graph

canvasjs