ChartJS 隐藏图表中“空”标签的图例

9gm1akwq  于 2022-11-06  发布在  Chart.js
关注(0)|答案(1)|浏览(267)

所以我知道如何隐藏所有的标签,但我只需要隐藏空的标签。
将是超级理想的,如果你可以建议任何解决方案,如何使这些标签“堆叠”。所以其中一个将保持可见,点击后,4其他人也会出现和dissaper...
我说的是灰色的)
真的很感激任何帮助!!!

<div class="canvasHolder">
                    <canvas id="stackedChartAgregateMulti" width="400" height="250"></canvas>
                </div>
                <script>
                    window.ctx10 = document.getElementById('stackedChartAgregateMulti');
                    if (window.ctx10Chart) window.ctx10Chart.destroy();
                    window.ctx10Chart = new Chart(window.ctx10, {
                        type: 'bar',
                        data: {
                            labels: ['January', 'Fabruary', 'March', 'April', 'May', 'June', 'July'],
                            datasets: [{
                                label: 'user 1 online',
                                data: [50, 35, 45, 47, 0, 3, 27],
                                backgroundColor: [
                                    'rgba(40, 139, 170, 1)'
                                ],
                                borderColor: [
                                    'rgb(40, 139, 170)'
                                ],
                                stack: 'Stack 0',
                                borderWidth: 1
                            },
                            {
                                label: 'user 1 offline',
                                data: [30, 20, 20, 67, 10, 25, 3],
                                backgroundColor: [
                                    'rgb(196, 201, 201)'                    
                                ],
                                borderColor: [
                                    'rgb(196, 201, 201)'
                                ],
                                stack: 'Stack 0',
                                borderWidth: 1
                            },
                            {
                                label: 'user 2 online',
                                data: [50, 35, 45, 47, 0, 3, 27],
                                backgroundColor: [
                                    'rgba(107, 112, 176, 1)'
                                ],
                                borderColor: [
                                    'rgb(107, 112, 176)'
                                ],
                                stack: 'Stack 1',
                                borderWidth: 1
                            },
                            {
                                label: '',
                                data: [30, 20, 20, 67, 10, 25, 3],
                                backgroundColor: [
                                    'rgb(196, 201, 201)'                    
                                ],
                                borderColor: [
                                    'rgb(196, 201, 201)'
                                ],
                                stack: 'Stack 1',
                                borderWidth: 1
                            },
                            {
                                label: 'user 3 online',
                                data: [50, 35, 45, 47, 0, 3, 27],
                                backgroundColor: [
                                    'rgba(208, 98, 155, 1)'
                                ],
                                borderColor: [
                                    'rgb(208, 98, 155)'
                                ],
                                stack: 'Stack 2',
                                borderWidth: 1
                            },
                            {
                                label: '',
                                data: [30, 20, 20, 67, 10, 25, 3],
                                backgroundColor: [
                                    'rgb(196, 201, 201)'                    
                                ],
                                borderColor: [
                                    'rgb(196, 201, 201)'
                                ],
                                stack: 'Stack 2',
                                borderWidth: 1
                            },
                            {
                                label: 'user 4 online',
                                data: [50, 35, 45, 47, 0, 3, 27],
                                backgroundColor: [
                                    'rgba(144, 71, 158, 1)'
                                ],
                                borderColor: [
                                    'rgb(144, 71, 158)'
                                ],
                                stack: 'Stack 3',
                                borderWidth: 1
                            },
                            {
                                label: '',
                                data: [30, 20, 20, 67, 10, 25, 3],
                                backgroundColor: [
                                    'rgb(196, 201, 201)'                    
                                ],
                                borderColor: [
                                    'rgb(196, 201, 201)'
                                ],
                                stack: 'Stack 3',
                                borderWidth: 1
                            },
                            {
                                label: 'user 5 online',
                                data: [0, 35, 45, 47, 0, 3, 27],
                                backgroundColor: [
                                    'rgba(40, 139, 170, 1)'
                                ],
                                borderColor: [
                                    'rgb(40, 139, 170)'
                                ],
                                stack: 'Stack 4',
                                borderWidth: 1
                            },
                            {
                                label: '',
                                data: [30, 20, 20, 67, 10, 25, 3],
                                backgroundColor: [
                                    'rgb(196, 201, 201)'                    
                                ],
                                borderColor: [
                                    'rgb(196, 201, 201)'
                                ],
                                stack: 'Stack 4',
                                borderWidth: 1
                            }]
                        },
                        options: {
                            plugins: {
                                drawTime: 'afterDraw',
                                title: {
                                    display: true,
                                    text: 'Stacked, agregated, multi column'
                                },
                                legend: {
                                    labels: {
                                        filter: (legendItem, data) => data.datasets[0].data[legendItem.index] != 0
                                    }
                                }
                            },
                            responsive: true,
                            scales: {
                                x: {
                                    stacked: true
                                },
                                y: {
                                    stacked: true
                                }
                            },

                        }
                    });
                </script>
c86crjj0

c86crjj01#

您可以利用legend上的onClick选项,隐藏同一堆栈的数据集,并更改过滤器回调返回的一些信息(如果带有空标签的数据集可见)。
第一个

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