JavaScript - Chart.js工具提示显示错误的x轴值 [英] JavaScript - Chart.js tooltip shows wrong x-axis value

问题描述

我有一个包含两个不同数据集的图表，但有时它们具有相同的x，y坐标。但是当我悬停共享点时，它有时会显示错误的日期。 y值是正确的，但它是未正确显示的x值。

尝试悬停共享点

---

更新

我更新了具有相同日期的笔和固定点。我还添加了类型：'time'感谢 @Oluwafemi Sule 。

这里我的编辑笔 。

但是现在，x轴上的日期很奇怪。他们不再说 2011年3月6日了，但他们说 2011年第1季度。并且工具提示仍然存在错误。

解决方案

您在图表配置中为类别笛卡尔轴定义了自定义比例。将xAxes的类型设置为类别。这可能不是必要的，因为ChartJS默认选择此项。

 期权：{
 scale：{
 xAxes：[{
类型：'category'，
 .... 
  

另外，第二个数据集格式不正确。您应该以 {x：xval，y：yval} 格式提供数据点。

参考文献：

http://www.chartjs.org/docs/latest/axes/cartesian/time.html#time-cartesian-axis

I have a chart with two different datasets, but sometimes they have the same x, y coordinates. But when I hover a shared point, it sometimes shows the wrong date. The y value is correct, but it's the x value that is not showing correctly.

Try hovering a shared point here on codepen.

In the image below you can see I'm hovering { y: 56.04, x: April 05, 2014 }, but is shows the xLabel value of 58.28, which is April 15, 2012. Also, you can see in the chart that both 57.05 and 58.28 have April 15, 2012 as x-value, but they are not on the same y position!

The code is too long to share on stackoverflow, but I made this codepen so you can view, fork and edit it there.

---

Update

I updated the pen and fixed points that have the same date. I also added type: 'time' thanks to @Oluwafemi Sule.

Here my edited pen.

But now, the dates on the x-axis are weird. They don't say March 06, 2011 anymore, but they say Q1 2011. And the tooltips still bug.

解决方案

You defined a custom scale for a category cartesian axis in your chart configuration. Set the type for your xAxes to 'category'. This may not be neccessary as ChartJS picks this up by default.

options: {
    scales: {
        xAxes: [{
            type: 'category',
            ....

Also, the second data set isn't formatted properly. You should supply the data points in {x: xval, y: yval} format.

References:

http://www.chartjs.org/docs/latest/axes/cartesian/time.html#time-cartesian-axis

这篇关于JavaScript - Chart.js工具提示显示错误的x轴值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！