JavaScript ArcGIS ImageryLayer.renderingRule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/ImageryLayer"], (ImageryLayer) => { /* code goes here */ });

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

類： esri/layers/ImageryLayer

繼承: ImageryLayer > Layer > Accessor

自從：用於 JavaScript 4.0 的 ArcGIS API

用法說明

ImageryLayer.renderingRule函數(或屬性)的定義如下：

renderingRule RasterFunction autocast

指定應如何呈現所請求圖像的規則。應用渲染規則時，服務器返回更新的服務信息，該信息反映了渲染規則定義的自定義處理。

例子：

const stretchFunction = new RasterFunction({
functionName: "Stretch",
  functionArguments: {
    StretchType: 5, // (0 = None, 3 = StandardDeviation, 4 = Histogram Equalization, 5 = MinMax, 6 = PercentClip, 9 = Sigmoid)
    Min: 0,
    Max: 255,
    Raster: "$$" // $$(default) refers to the entire image service, $2 refers to the second image of the image service
  },
  outputPixelType: "u8"
});

const colorFunction = new RasterFunction({
  functionName: "Colormap",
  functionArguments: {
    ColorrampName: "Temperature", // other examples: "Slope", "Surface", "Blue Bright"....
    Raster: stretchFunction // chaining multiple rasterfunctions
  }
});

const imageryLayer = new ImageryLayer({
  url:
    "https://sampleserver6.arcgisonline.com/arcgis/rest/services/ScientificData/SeaTemperature/ImageServer"
});

imageryLayer.renderingRule = colorFunction; // Set rendering rule to the raster function

相關用法

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