的 DEMO

Question

在我的以下Kendo UI图表中，我一直想要准确显示5个类别（X）轴标签（已实现）。

我有两个问题（详见附图），

1）这些标签必须在接近一小时或30分钟内正确圆整

2）工具提示必须格式为 dd.MM.yy HH：tt

动态接收此图表的数据。我不能使用类别轴类型作为＆＃39;日期＆＃39;因为我想在图表上显示所有数据点。

我的示例代码可在下面找到，

＆＃13;

  
  var dataSource=[{"precisionIndex":0,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:16:29.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.6000000000,"data_5":-3.0000000000},{"precisionIndex":800,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:16:29.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.6000000000,"data_5":-3.0000000000},{"precisionIndex":1,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:24:50.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-7.8000000000,"data_5":-2.9000000000},{"precisionIndex":3,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:36:00.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-7.4000000000,"data_5":-2.8000000000},{"precisionIndex":4,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:41:34.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.9000000000,"data_4":-7.5000000000,"data_5":-3.0000000000},{"precisionIndex":5,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:47:09.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.7000000000,"data_5":-3.1000000000},{"precisionIndex":6,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:52:44.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-8.1000000000,"data_5":-3.1000000000},{"precisionIndex":7,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:58:18.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-8.3000000000,"data_5":-3.3000000000},{"precisionIndex":8,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:03:53.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-9.0000000000,"data_5":-3.3000000000},{"precisionIndex":9,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:09:28.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-9.1000000000,"data_5":-3.5000000000},{"precisionIndex":10,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:15:02.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-9.5000000000,"data_5":-3.8000000000},{"precisionIndex":11,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:20:37.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-9.7000000000,"data_5":-3.7000000000},{"precisionIndex":12,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:26:12.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-9.9000000000,"data_5":-3.8000000000},{"precisionIndex":13,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:31:46.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-10.2000000000,"data_5":-3.9000000000},{"precisionIndex":14,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:37:21.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-10.6000000000,"data_5":-4.3000000000},{"precisionIndex":15,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:42:56.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-11.0000000000,"data_5":-4.5000000000},{"precisionIndex":16,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:48:30.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-11.4000000000,"data_5":-4.3000000000},{"precisionIndex":17,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:54:05.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-11.8000000000,"data_5":-4.8000000000},{"precisionIndex":18,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:59:40.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.1000000000,"data_5":-5.1000000000},{"precisionIndex":24,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:33:07.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.3000000000,"data_5":-5.5000000000},{"precisionIndex":26,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:44:17.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.2000000000,"data_5":-5.7000000000},{"precisionIndex":27,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:49:51.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-12.3000000000,"data_5":-5.7000000000},{"precisionIndex":28,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:55:26.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.4000000000,"data_5":-5.8000000000},{"precisionIndex":29,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:01:01.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-13.1000000000,"data_5":-5.9000000000},{"precisionIndex":30,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:06:35.4","data_1":22.0000000000,"data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];
  
  $("#chart").kendoChart({
    dataSource: dataSource,
    seriesDefaults: {
      type: "line"
    },
    series: [
      {
        field: "data_3",
        name: "Profit 2"
      },
      {
        field: "data_4",
        name: "Profit 1"
      }],
    categoryAxis: {
      field: "measurementDate",
      type:"category",
      labels: {
        template: function(e){
          var val =new Date(e.value);
          var label = kendo.toString(val, "dd.MM.yy HH:mm");
          return label.split(" ").join("\n");
        }
      }
    },
    valueAxis: {
      axisCrossingValue: Number.MIN_SAFE_INTEGER
    },
    tooltip: {
      visible: true,
      shared: true
    },
    dataBound: function (e) {
      var ds = this.dataSource.data();
      var maxDateCategories = 4;
      var step = Math.round(ds.length / maxDateCategories);
      // display only 'n'th categories on xAxis
      this.options.categoryAxis.labels.step = step;
    }
  });

＆＃13;

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Untitled</title>

  <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.common.min.css">
  <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.rtl.min.css">
  <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.default.min.css">
  <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.mobile.all.min.css">

  <script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
  <script src="https://kendo.cdn.telerik.com/2017.2.621/js/angular.min.js"></script>
  <script src="https://kendo.cdn.telerik.com/2017.2.621/js/jszip.min.js"></script>
  <script src="https://kendo.cdn.telerik.com/2017.2.621/js/kendo.all.min.js"></script></head>
<body>
  <div id="chart"> </div>
</body>
</html>

＆＃13;

Answer 1

对于工具提示，您可以使用 sharedTemplate 根据需要格式化类别：

sharedTemplate: '<div> #= kendo.toString(new Date(category), "dd.MM.yy HH:mm") # </div># for (var i = 0; i < points.length; i++) { # <div>#: points[i].series.name# : #: points[i].value #</div># } #'

对于标签模板，为时间戳添加自己的舍入逻辑，例如：

  labels: {
    template: function(e){
      var val =new Date(e.value);
      var mins = val.getMinutes();
      if (mins < 15 ) {
        val.setMinutes(0);
      } else if (mins < 45) {
        val.setMinutes(30);
      } else {
        val.setHours(val.getHours() + 1);
        val.setMinutes(0);
      }
      var label = kendo.toString(val, "dd.MM.yy HH:mm");
      return label.split(" ").join("\n");
    }
  }

组Kendo ui图表类别轴日期标签舍入

1 个答案:

的 DEMO