-
timeExtent
TimeExtent
autocast
图层的时间范围。当图层的 useViewTime 为
false
时,图层指示视图根据此时间范围显示来自图层的数据。如果useViewTime
为true
,并且同时设置了图层和视图时间范围,则将显示位于视图和图层时间范围交集内的要素。例如,如果图层的时间范围设置为显示 1970 年至 1975 年之间的要素,并且视图的时间范围设置为 1972-1980 年,则要素图层上的有效时间将为 1972-1975 年。默认值:null
例子:
if (!layer.useViewTime) { if (layer.timeExtent) { console.log("Current timeExtent:", layer.timeExtent.start, " - ", layer.timeExtent.end} } else { console.log("The layer will display data within the view's timeExtent."); console.log("Current view.timeExtent:", view.timeExtent.start, " - ", view.timeExtent.end} } }
// set the timeExtent on the layer and useViewTime false // In this case, the layer will honor its timeExtent and ignore // the view's timeExtent const layer = new ImageryLayer({ url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/ScientificData/SeaTemperature/ImageServer", timeExtent: { start: new Date(2014, 4, 18), end: new Date(2014, 4, 19) }, useViewTime: false });
// timeExtent is set on the layer and the view // In this case, the layer will display features that fall // within the intersection of view and layer time extents // features within Jan 1, 1976 - Jan 1, 1981 will be displayed const view = new MapView({ timeExtent: { start: new Date(1976, 0, 1), end: new Date(2002, 0, 1) } }); const layer = new FeatureLayer({ url: myUrl, timeExtent: { start: new Date(1974, 0, 1), end: new Date(1981, 0, 1) } });
基本信息
以下是所在类或对象的基本信息。
AMD:
require(["esri/layers/SubtypeGroupLayer"], (SubtypeGroupLayer) => { /* code goes here */ });
ESM:
import SubtypeGroupLayer from "@arcgis/core/layers/SubtypeGroupLayer";
类:
esri/layers/SubtypeGroupLayer
继承: SubtypeGroupLayer > Layer > Accessor
自从:用于 JavaScript 4.20 的 ArcGIS API
用法说明
SubtypeGroupLayer.timeExtent
函数(或属性)的定义如下:
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注:本文由纯净天空筛选整理自arcgis.com大神的英文原创作品 SubtypeGroupLayer.timeExtent。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。