用戶放大后，我需要 x 軸上的更新值。根據(jù)我發(fā)現(xiàn)的示例 ( https://stackblitz.com/edit/angular-6fbwjp?file=app/app.component.ts )，我可以使用縮放事件偵聽器。用于放大的 Kendo UI 文檔：從此處的圖像中，您可以看到軸范圍返回為空對(duì)象 {}。為什么會(huì)這樣，我該如何解決？我的最終目標(biāo)是使用放大范圍來更新數(shù)據(jù)并重繪圖形ZoomEvent {sender: ChartComponent, prevented: false, axisRanges: {…}, delta: undefined, originalEvent: {…}}axisRanges:__proto__: Objectdelta: undefinedoriginalEvent: {distance: 0, event: PointerEvent, target: path, touches: Array(1), preventDefault: ?, …}prevented: falsesender: ChartComponent {configurationService: ConfigurationService, axisLabelClick: EventEmitter, drag: EventEmitter, dragEnd: EventEmitter, dragStart: EventEmitter, …}__proto__: PreventableEvent<kendo-chart [pannable]="{ lock: 'y' }" [zoomable]="{ mousewheel :{ lock: 'y'}, selection: { lock: 'y' } }" (zoom)="onZoom($event)"    [axisDefaults]="axisDefaults" [chartArea]="chartAreaOptions" [legend]="legendOptions">    <kendo-chart-series>      <!-- Loop thru all readings -->      <kendo-chart-series-item *ngFor="let readings of ReadingsData" [data]="readings.items"        [color]="seriesOptionsArr.get(readings.value).color" [markers]="{ visible: false }"        [name]="seriesOptionsArr.get(readings.value).name" type="scatterLine" xField="timeRead" yField="sample"        zIndex="1">      </kendo-chart-series-item>    </kendo-chart-series>    <kendo-chart-x-axis>      <kendo-chart-x-axis-item type="date" baseUnit="seconds" [min]="xAxisMin"        [max]="xAxisMax" majorTicksVisible=false>      </kendo-chart-x-axis-item>    </kendo-chart-x-axis>    <kendo-chart-y-axis>      <kendo-chart-y-axis-item ...>      </kendo-chart-y-axis-item>    </kendo-chart-y-axis>  </kendo-chart>