Chart.js如何在x轴上显示24 H时间标签

lnxxn5zx  于 5个月前  发布在  Chart.js
关注(0)|答案(1)|浏览(42)

我想在x轴上显示00：00，06：00，12：00，18：00，23：59，时间之间有数据。我正在处理这个：

我想这样做：

var ctx = document.getElementById("heat-pump-chart");

    heatPumpChart = new Chart(ctx, {
        type: 'line',
        data: {
            datasets: 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Temp (°C)","fill":true,"borderWidth":1},{"data":[{"x":"17:19:55","y":44.5},{"x":"17:20:09","y":44.5},{"x":"17:20:24","y":44.5},{"x":"17:20:39","y":44.6},{"x":"17:20:54","y":44.6},{"x":"17:21:09","y":44.6},{"x":"17:21:24","y":44.7},{"x":"17:21:39","y":44.7},{"x":"17:21:54","y":44.7},{"x":"17:22:09","y":44.7},{"x":"17:22:24","y":44.8},{"x":"17:22:39","y":44.8},{"x":"17:22:54","y":44.8},{"x":"17:23:09","y":45},{"x":"17:23:24","y":45},{"x":"17:23:39","y":45},{"x":"17:23:54","y":45},{"x":"17:24:09","y":45.1},{"x":"17:24:24","y":45.1},{"x":"17:24:39","y":45.2},{"x":"17:24:54","y":45.2},{"x":"17:25:09","y":45.2},{"x":"17:25:48","y":45.4},{"x":"17:25:54","y":45.4},{"x":"17:26:10","y":45.4},{"x":"17:26:24","y":45.5},{"x":"17:26:40","y":45.5},{"x":"17:26:55","y":45.5},{"x":"17:27:10","y":45.6},{"x":"17:27:25","y":45.6},{"x":"17:27:40","y":45.6},{"x":"17:27:55","y":45.7},{"x":"17:28:10","y":45.7},{"x":"17:28:25","y":45.7},{"x":"17:28:40","y":45.9},{"x":"17:28:55","y":45.9},{"x":"17:29:10","y":45.9},{"x":"17:29:25","y":46},{"x":"17:29:40","y":46},{"x":"17:29:55","y":46.1},{"x":"17:30:10","y":46.1},{"x":"17:30:25","y":46.1},{"x":"17:30:40","y":46.1},{"x":"17:30:55","y":46.1},{"x":"17:31:10","y":46.2},{"x":"17:31:25","y":46.2},{"x":"17:31:40","y":46.4},{"x":"17:31:55","y":46.4},{"x":"17:32:10","y":46.4},{"x":"17:32:25","y":46.4},{"x":"17:32:40","y":46.4},{"x":"17:32:55","y":46.4},{"x":"17:33:10","y":46.5},{"x":"17:33:25","y":46.5},{"x":"17:33:55","y":46.6},{"x":"17:34:10","y":46.5},{"x":"17:34:25","y":46.6},{"x":"17:34:40","y":46.8},{"x":"17:35:25","y":46.8},{"x":"17:35:40","y":46.8},{"x":"17:35:55","y":46.8},{"x":"17:36:10","y":46.8},{"x":"17:36:25","y":46.8},{"x":"17:36:40","y":46.9},{"x":"17:36:55","y":46.9},{"x":"17:37:10","y":46.8},{"x":"17:37:25","y":46.6},{"x":"17:37:40","y":46.6},{"x":"17:37:55","y":46.6},{"x":"17:38:10","y":46.4},{"x":"17:38:25","y":46.1},{"x":"17:38:40","y":45.9},{"x":"17:38:55","y":45.7},{"x":"17:39:10","y":45.4},{"x":"17:39:25","y":45.2},{"x":"17:39:40","y":45},{"x":"17:39:55","y":44.7},{"x":"17:40:10","y":44.6},{"x":"17:40:25","y":44.6},{"x":"17:40:40","y":44.4},{"x":"17:40:55","y":44.1},{"x":"17:41:10","y":43.9},{"x":"17:41:25","y":43.6},{"x":"17:41:40","y":43.2},{"x":"17:41:55","y":43},{"x":"17:42:10","y":43.1},{"x":"17:42:25","y":43.2},{"x":"17:42:40","y":43.2},{"x":"17:42:55","y":43.2},{"x":"17:43:10","y":43.2},{"x":"17:43:25","y":43.4},{"x":"17:43:40","y":43.5},{"x":"17:43:55","y":43.6},{"x":"17:44:10","y":43.7},{"x":"17:44:25","y":43.9},{"x":"17:44:40","y":43.9},{"x":"17:44:55","y":44},{"x":"17:45:10","y":44},{"x":"17:45:25","y":44.1},{"x":"17:45:40","y":44.1},{"x":"17:45:55","y":44.1},{"x":"17:46:10","y":44.2},{"x":"17:46:25","y":44.2},{"x":"17:46:40","y":44.2},{"x":"17:46:55","y":44.4},{"x":"17:47:10","y":44.5},{"x":"17:47:25","y":44.5},{"x":"17:47:40","y":44.6},{"x":"17:47:55","y":44.6},{"x":"17:48:10","y":44.7},{"x":"17:48:25","y":44.7},{"x":"17:48:40","y":44.8},{"x":"17:48:55","y":44.8},{"x":"17:49:10","y":45},{"x":"17:49:25","y":45},{"x":"17:49:40","y":45.1},{"x":"17:49:55","y":45.1},{"x":"17:50:10","y":45.1},{"x":"17:50:25","y":45.1},{"x":"17:50:40","y":45.2},{"x":"17:50:55","y":45.2},{"x":"17:51:10","y":45.4},{"x":"17:51:25","y":45.4},{"x":"17:51:40","y":45.5},{"x":"17:51:55","y":45.5},{"x":"17:52:10","y":45.5},{"x":"17:52:25","y":45.5},{"x":"17:52:40","y":45.6},{"x":"17:52:55","y":45.6},{"x":"17:53:10","y":45.6},{"x":"17:53:25","y":45.7},{"x":"17:53:40","y":45.7},{"x":"17:53:55","y":45.7},{"x":"17:54:10","y":45.7},{"x":"17:54:25","y":45.9},{"x":"17:54:40","y":45.9},{"x":"17:54:55","y":45.9},{"x":"17:55:10","y":46},{"x":"17:55:25","y":46},{"x":"17:55:40","y":46},{"x":"17:55:55","y":46},{"x":"17:56:10","y":46.1},{"x":"17:56:25","y":46.1},{"x":"17:56:40","y":46.1},{"x":"17:56:55","y":46.2},{"x":"17:57:10","y":46.2},{"x":"17:57:25","y":46.2},{"x":"17:57:40","y":46.2},{"x":"17:57:55","y":46.4},{"x":"17:58:10","y":46.4},{"x":"17:58:25","y":46.4},{"x":"17:58:40","y":46.4},{"x":"17:58:55","y":46.5},{"x":"17:59:10","y":46.6},{"x":"17:59:25","y":46.6},{"x":"17:59:40","y":46.6},{"x":"17:59:56","y":46.6},{"x":"18:00:11","y":46.8},{"x":"18:00:26","y":46.8},{"x":"18:00:41","y":46.8},{"x":"18:00:56","y":46.8},{"x":"18:01:11","y":46.9},{"x":"18:01:26","y":46.9},{"x":"18:01:41","y":46.9},{"x":"18:01:56","y":46.9},{"x":"18:02:11","y":46.9},{"x":"18:02:26","y":46.9},{"x":"18:02:41","y":46.8},{"x":"18:02:56","y":46.8},{"x":"18:03:11","y":46.8},{"x":"18:03:26","y":46.6},{"x":"18:03:41","y":46.6},{"x":"18:03:56","y":46.6},{"x":"18:04:11","y":46.5},{"x":"18:04:26","y":46.5},{"x":"18:04:41","y":46.5},{"x":"18:04:56","y":46.5},{"x":"18:05:11","y":46.4},{"x":"18:05:26","y":46.4},{"x":"18:05:41","y":46.4},{"x":"18:05:56","y":46.5},{"x":"18:06:11","y":46.5},{"x":"18:06:26","y":46.4},{"x":"18:06:41","y":46.4},{"x":"18:06:56","y":46.4},{"x":"18:07:11","y":46.4},{"x":"18:07:26","y":46.4},{"x":"18:07:41","y":46.4},{"x":"18:07:56","y":46.4},{"x":"18:08:11","y":46.4},{"x":"18:08:26","y":46.4},{"x":"18:08:41","y":46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(°C)","fill":true,"borderWidth":1},{"data":[{"x":"17:19:55","y":42.9},{"x":"17:20:09","y":43.1},{"x":"17:20:24","y":43},{"x":"17:20:39","y":42.9},{"x":"17:20:54","y":43.1},{"x":"17:21:09","y":43.2},{"x":"17:21:24","y":43.2},{"x":"17:21:39","y":43.2},{"x":"17:21:54","y":43.2},{"x":"17:22:09","y":43.1},{"x":"17:22:24","y":43.2},{"x":"17:22:39","y":43.2},{"x":"17:22:54","y":43.4},{"x":"17:23:09","y":43.2},{"x":"17:23:24","y":43.4},{"x":"17:23:39","y":43.5},{"x":"17:23:54","y":43.6},{"x":"17:24:09","y":43.7},{"x":"17:24:24","y":43.9},{"x":"17:24:39","y":43.7},{"x":"17:24:54","y":43.7},{"x":"17:25:09","y":43.9},{"x":"17:25:48","y":43.9},{"x":"17:25:54","y":44},{"x":"17:26:10","y":44},{"x":"17:26:24","y":43.7},{"x":"17:26:40","y":44.1},{"x":"17:26:55","y":44},{"x":"17:27:10","y":44.2},{"x":"17:27:25","y":44.2},{"x":"17:27:40","y":44.1},{"x":"17:27:55","y":44.2},{"x":"17:28:10","y":44.4},{"x":"17:28:25","y":44.5},{"x":"17:28:40","y":44.5},{"x":"17:28:55","y":44.5},{"x":"17:29:10","y":44.5},{"x":"17:29:25","y":44.2},{"x":"17:29:40","y":44.5},{"x":"17:29:55","y":44.6},{"x":"17:30:10","y":44.6},{"x":"17:30:25","y":44.6},{"x":"17:30:40","y":44.6},{"x":"17:30:55","y":44.7},{"x":"17:31:10","y":44.7},{"x":"17:31:25","y":44.6},{"x":"17:31:40","y":44.7},{"x":"17:31:55","y":44.5},{"x":"17:32:10","y":44.7},{"x":"17:32:25","y":44.8},{"x":"17:32:40","y":44.8},{"x":"17:32:55","y":44.7},{"x":"17:33:10","y":44.8},{"x":"17:33:25","y":44.8},{"x":"17:33:55","y":45.1},{"x":"17:34:10","y":45},{"x":"17:34:25","y":45},{"x":"17:34:40","y":45},{"x":"17:35:25","y":45.1},{"x":"17:35:40","y":45},{"x":"17:35:55","y":45.4},{"x":"17:36:10","y":45.2},{"x":"17:36:25","y":45.1},{"x":"17:36:40","y":45.2},{"x":"17:36:55","y":45.2},{"x":"17:37:10","y":45.5},{"x":"17:37:25","y":45.5},{"x":"17:37:40","y":45.5},{"x":"17:37:55","y":45.7},{"x":"17:38:10","y":45.6},{"x":"17:38:25","y":45.4},{"x":"17:38:40","y":45.1},{"x":"17:38:55","y":44.7},{"x":"17:39:10","y":44.7},{"x":"17:39:25","y":44.7},{"x":"17:39:40","y":44.4},{"x":"17:39:55","y":44.1},{"x":"17:40:10","y":44.1},{"x":"17:40:25","y":44},{"x":"17:40:40","y":43.9},{"x":"17:40:55","y":43.9},{"x":"17:41:10","y":43.7},{"x":"17:41:25","y":43.5},{"x":"17:41:40","y":43.5},{"x":"17:41:55","y":43.1},{"x":"17:42:10","y":43.1},{"x":"17:42:25","y":43.1},{"x":"17:42:40","y":42.8},{"x":"17:42:55","y":42.5},{"x":"17:43:10","y":42.6},{"x":"17:43:25","y":42.5},{"x":"17:43:40","y":42.5},{"x":"17:43:55","y":42.6},{"x":"17:44:10","y":42.6},{"x":"17:44:25","y":42.6},{"x":"17:44:40","y":42.8},{"x":"17:44:55","y":42.9},{"x":"17:45:10","y":42.8},{"x":"17:45:25","y":42.8},{"x":"17:45:40","y":43},{"x":"17:45:55","y":43.1},{"x":"17:46:10","y":43},{"x":"17:46:25","y":43.1},{"x":"17:46:40","y":43.2},{"x":"17:46:55","y":43.1},{"x":"17:47:10","y":43.2},{"x":"17:47:25","y":43.1},{"x":"17:47:40","y":43.2},{"x":"17:47:55","y":43.2},{"x":"17:48:10","y":43.2},{"x":"17:48:25","y":43.4},{"x":"17:48:40","y":43.5},{"x":"17:48:55","y":43.6},{"x":"17:49:10","y":43.5},{"x":"17:49:25","y":43.5},{"x":"17:49:40","y":43.6},{"x":"17:49:55","y":43.9},{"x":"17:50:10","y":43.9},{"x":"17:50:25","y":43.9},{"x":"17:50:40","y":43.7},{"x":"17:50:55","y":43.9},{"x":"17:51:10","y":44.1},{"x":"17:51:25","y":43.7},{"x":"17:51:40","y":43.7},{"x":"17:51:55","y":44.2},{"x":"17:52:10","y":44.2},{"x":"17:52:25","y":44},{"x":"17:52:40","y":44},{"x":"17:52:55","y":44.2},{"x":"17:53:10","y":44.5},{"x":"17:53:25","y":44.4},{"x":"17:53:40","y":44},{"x":"17:53:55","y":44.4},{"x":"17:54:10","y":44.7},{"x":"17:54:25","y":44.5},{"x":"17:54:40","y":44.4},{"x":"17:54:55","y":44.4},{"x":"17:55:10","y":44.5},{"x":"17:55:25","y":44.5},{"x":"17:55:40","y":44.4},{"x":"17:55:55","y":44.5},{"x":"17:56:10","y":44.6},{"x":"17:56:25","y":44.6},{"x":"17:56:40","y":44.6},{"x":"17:56:55","y":44.8},{"x":"17:57:10","y":44.8},{"x":"17:57:25","y":44.7},{"x":"17:57:40","y":45},{"x":"17:57:55","y":44.8},{"x":"17:58:10","y":44.8},{"x":"17:58:25","y":45.1},{"x":"17:58:40","y":45.1},{"x":"17:58:55","y":45.1},{"x":"17:59:10","y":45},{"x":"17:59:25","y":45.1},{"x":"17:59:40","y":45.1},{"x":"17:59:56","y":45},{"x":"18:00:11","y":45.4},{"x":"18:00:26","y":45.2},{"x":"18:00:41","y":45.2},{"x":"18:00:56","y":45.2},{"x":"18:01:11","y":45.2},{"x":"18:01:26","y":45.1},{"x":"18:01:41","y":45.2},{"x":"18:01:56","y":45.2},{"x":"18:02:11","y":45.4},{"x":"18:02:26","y":45.4},{"x":"18:02:41","y":45.4},{"x":"18:02:56","y":45.6},{"x":"18:03:11","y":45.7},{"x":"18:03:26","y":45.5},{"x":"18:03:41","y":45.9},{"x":"18:03:56","y":45.9},{"x":"18:04:11","y":45.6},{"x":"18:04:26","y":45.9},{"x":"18:04:41","y":46},{"x":"18:04:56","y":46.2},{"x":"18:05:11","y":46.1},{"x":"18:05:26","y":46},{"x":"18:05:41","y":46},{"x":"18:05:56","y":46.1},{"x":"18:06:11","y":46.4},{"x":"18:06:26","y":46.2},{"x":"18:06:41","y":46.5},{"x":"18:06:56","y":46.6},{"x":"18:07:11","y":46.5},{"x":"18:07:26","y":46.5},{"x":"18:07:41","y":46.5},{"x":"18:07:56","y":46.8},{"x":"18:08:11","y":46.8},{"x":"18:08:26","y":46.5},{"x":"18:08:41","y":46.9},{"x":"18:08:56","y":46.8},{"x":"18:09:11","y":47},{"x":"18:09:26","y":47.2},{"x":"18:09:41","y":47},{"x":"18:09:56","y":47.2},{"x":"18:10:11","y":47.4}],"label":"Heating return Temp (°C)","fill":true,"borderWidth":1}]
        },
        options: {
            scales: {
                x: {
                    type: 'time',
                    time: {
                        displayFormats: {
                            hour: 'HH:mm:ss'
                        }
                    },
                }
            }
        },
        options: {
            elements: {
                point:{
                    radius: 0
                }
            },
            scales: {
                y: {
                    beginAtZero: true
                }
            }
        }
    });

字符串

chart.js

1条答案

按热度按时间
h9vpoimq

h9vpoimq1#

Chart.js使用了一个数据对象，允许你传递一个名为labels的属性。我相信你可以传递一个你想成为标签的时间数组。比如：

data: {
    labels: ["00:00", "06:00", "12:00", "18:00", "23:59"],
},

字符串
还有一个x轴属性，你似乎错过了。

scales: {
    x: [{
          display: false
        },
        {
          scaleLabel: {
             display: true,
             labelString: 'frequency'
        },
        type: 'linear',
        ticks: {
           beginAtZero: true,
           max: 0.5,
           stepSize: 0.1
        }
    }
  ]
}

型
你唯一需要做的就是计算出你想要的步长。我不确定你的数据中实际上有多少个数据点。如果你在yAxes对象的下面添加xAxes，并调整刻度以匹配你想要的值，那么这应该会让你朝着正确的方向前进。

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