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我正在使用最新版本的 chart.js (3.2.1)。如果我将其设置为正值，则填充有效。但是填充 0（或负值）不会将折线图完全设置在画布的边界处

options: {

        layout: {
            padding:0
        },
        interaction: {
            intersect: false,
        },
        plugins: {
            tooltip: {
                backgroundColor: 'transparent',
                displayColors: false,
                bodyFontSize: 14,
                titleColor: 'rgba(83,255,228,1)',
                callbacks: {
                    label: function (tooltipItems, data) {
                        return 'BMI: ' + tooltipItems.raw;
                    }
                }
            },
            legend: {
                display: false,
            },
        },
        elements: {
            point: {
                radius: 6,
                hitRadius: 6,
                hoverRadius: 6
            }
        },
        scales: {
            xAxes: {
                display: false,
            },
            yAxes: {
                display: false,
                
            },
        }
    }

画布位置正确

4

1 回答 1

0

图表配置中的填充不适用于将画布样式设置为其他元素，填充所做的唯一事情是增加在画布边缘和线条之间留出一点空间的能力，从您提供的图像来看，它看起来像走到画布的尽头，空白区域是画布下方的另一个元素。

如您在此示例中所见，画布背景为灰色，并且padding: 0线条按预期触及画布末端

var options = {
  type: 'line',
  data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, 5, 2, 3],
        borderWidth: 1
      },
      {
        label: '# of Points',
        data: [7, 11, 5, 8, 3, 7],
        borderWidth: 1
      }
    ]
  },
  options: {
    plugins: {
      tooltip: {
        backgroundColor: 'transparent',
        displayColors: false,
        bodyFontSize: 14,
        titleColor: 'rgba(83,255,228,1)',
        callbacks: {
          label: function(tooltipItems, data) {
            return 'BMI: ' + tooltipItems.raw;
          }
        }
      },
      legend: {
        display: false,
      },
    },
    interaction: {
      intersect: false,
    },
    layout: {
      padding: 0
    },
    elements: {
      point: {
        radius: 0
      }
    },
    scales: {
      y: {
        display: false
      },
      x: {
        display: false
      }
    }
  }
}

var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
canvas {
  background-color: #eee;
}
<body>
  <canvas id="chartJSContainer" width="600" height="400"></canvas>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.2.0/chart.js" integrity="sha512-opXrgVcTHsEVdBUZqTPlW9S8+99hNbaHmXtAdXXc61OUU6gOII5ku/PzZFqexHXc3hnK8IrJKHo+T7O4GRIJcw==" crossorigin="anonymous"></script>
</body>

于 2021-05-14T12:02:08.360 回答