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JavaScript ArcGIS PointCloudLayer.layerId用法及代碼示例


基本信息

以下是所在類或對象的基本信息。

AMD: require(["esri/layers/PointCloudLayer"], (PointCloudLayer) => { /* code goes here */ });

ESM: import PointCloudLayer from "@arcgis/core/layers/PointCloudLayer";

類: esri/layers/PointCloudLayer

繼承: PointCloudLayer > Layer > Accessor

自從:用於 JavaScript 4.2 的 ArcGIS API

用法說明

PointCloudLayer.layerId函數(或屬性)的定義如下:

layerId Number


場景服務圖層的圖層 ID 或圖層索引。當從包含多個圖層的服務加載帶有 PortalItem 屬性的單個圖層時,這特別有用。您可以在以下兩種情況之一指定此值:

  • 通過 PortalItem 屬性加載圖層時。
  • 將圖層 url 直接指向場景服務時。

如果在上述任一情況下均未指定 layerId,則選擇服務中的第一層 (layerId = 0)。

例子:

// while these examples use a SceneLayer, the same pattern can be
// used for other layers that may be loaded from portalItem ids

// loads the third layer in the given Portal Item
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  },
  layerId: 2
});
// If not specified, the first layer (layerId: 0) will be returned
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  }
});
// Can also be used if URL points to service and not layer
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer",
  layerId: 0  // Notice that the url doesn't end with /2
});
// This code returns the same layer as the previous snippet
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer/layers/0",
  // The layer id is specified in the URL
});

相關用法


注:本文由純淨天空篩選整理自arcgis.com大神的英文原創作品 PointCloudLayer.layerId。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。