Question

我在一个容器内有一个chart.js画布，我给它指定了最小宽度，以便人们可以在移动设备上滚动图表。

但是，只要容器具有固定的宽度，图表就会变得越失真，屏幕越小。

在图表中，我已经尝试设置选项var blogPosts = $('#blog-posts'); // get reference once to avoid repeat lookups $.each(byMonth, function(key, value) { var outer = byMonth[key] $.each(outer, function(k, v) { var inner = outer[k]; var jData = JSON.stringify(v); var monthBlogPosts = $('<div class = "month"> </div>').appendTo(blogPosts); // ^ obtain reference here $.each(inner, function(i, obj) { var title = inner[i].Title; var description = inner[i].Description; var date = inner[i].DatePublished; $('<div class = "post"><h2>' + title + '</h2><p>' + description + '</p>').appendTo(monthBlogPosts); // ^ use reference here }) }和responsive: true。这样可以解决问题，但图表仍然失真。

Chart.js选项：

maintainAspectRatio: false

HTML：

var options = {
    responsive: true,
    maintainAspectRatio: false,
    scales: {
      yAxes: [{
        stacked: false,
        gridLines: {
          display: true,
          color: "rgba(151,151,151,0.2)"
        }
      }],
      xAxes: [{
        gridLines: {
          display: true,
          color: "rgba(151,151,151,0.2)"
        }
      }]
    }
  };

CSS：

<div class="tds-chart-inner tds-hor-scroll">
 <canvas id="tds-chart-mem"></canvas>
</div>

working chart
工作表

distorted chart
扭曲的图表

Answer 1

<!DOCTYPE HTML>
<html lang="en">

<head>
<meta charset="utf-8">
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" />

<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />


</head>

<style>
 .tds-chart-inner {
  width:100%;
 }


</style>

<body class="">

<div class="tds-chart-inner tds-hor-scroll">
 <canvas id="myChart"></canvas>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.4.0/Chart.min.js"> 
</script>


<script>
 var ctx = document.getElementById("myChart").getContext('2d');
 var myChart = new Chart(ctx, {
 type: 'line',
 data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, 5, 2, 3,80],
        backgroundColor: [
            'rgba(255, 99, 132, 0.2)',
            'rgba(54, 162, 235, 0.2)',
            'rgba(255, 206, 86, 0.2)',
            'rgba(75, 192, 192, 0.2)',
            'rgba(153, 102, 255, 0.2)',
            'rgba(255, 159, 64, 0.2)'
        ],
        borderColor: [
            'rgba(255,99,132,1)',
            'rgba(54, 162, 235, 1)',
            'rgba(255, 206, 86, 1)',
            'rgba(75, 192, 192, 1)',
            'rgba(153, 102, 255, 1)',
            'rgba(255, 159, 64, 1)'
        ],
        borderWidth: 1
    }]
},
options: {
    scales: {
        yAxes: [{
            ticks: {
                beginAtZero:true,
                fontColor: 'red'
            }
        }]
    }
}
});



</script>

Answer 2

对我来说，问题在于图形本身的高度要比我自己设置的画布高。

我的解决方法是：

我删除了画布的所有高度设置（css和tag属性）
为画布创建容器标签并为其设置高度
在图表选项中添加了

      responsive: true,
      maintainAspectRatio: false,

在示例中问题的问题是在CSS中：

canvas {
  left: 0px;
  height: 300px !important;
}

我会将其更改为：

.tds-hor-scroll {
	overflow-x: auto;
}
.tds-chart-inner {
  min-width: 850px;
  height: 300px;
}

<div class="tds-hor-scroll">
	<div class="tds-chart-inner">
	  <canvas id="tds-chart-mem"></canvas>
	</div>
</div>

chart.js图表以固定宽度变形

2 个答案:

chart.js图表​​以固定宽度变形

2 个答案:

chart.js图表以固定宽度变形