How to create a graph where the vertical axis (Y-axis) is a string?(如何创建垂直轴(Y轴)为字符串的图形？)

本文介绍了如何创建垂直轴(Y轴)为字符串的图形？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我要使用Chart.js制作的图形是一个垂直轴上有字符串、水平轴上有数字的折线图。 例如，横轴是时间，垂直轴是帽子的颜色。 请参见下图 

var myChart = new Chart(ctx, {
  type: 'line',
  data: {
    labels: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21],//Number of frames
    datasets: [{
      label: 'The colour of the hat of the person in the frame',
      data: ["red","blue","red","blue","yeallow","red","blue","red","blue","yeallow",.....],
      borderColor: '#f88',
    }],
  }
});

推荐答案

是，您必须将y刻度设置为CATEGORY，并为其提供标签数组，然后您可以在数据数组中提及这些标签：

const options = {
  type: 'line',
  data: {
    labels: [1, 2, 3, 4, 5, 6],
    datasets: [{
      label: '# of Points',
      data: ["Blue", "Red", "Red", "Orange", "Green", "Orange"],
      borderColor: 'pink'
    }]
  },
  options: {
    scales: {
      y: {
        type: 'category',
        labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"]
      },
    }
  }
}

const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
  <canvas id="chartJSContainer" width="600" height="400"></canvas>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.0/chart.js"></script>
</body>

这篇关于如何创建垂直轴(Y轴)为字符串的图形？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编程学习网！