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Google Earth Engine(GEE)——線上實作Sentinel-2 和 Landsat 8 SWIR1 反射率之間的線性關系(線上出線性圖)

假設您想知道 Sentinel-2 和 Landsat 8 SWIR1 反射率之間的線性關系。在此示例中,使用格式化為點的特征集合的随機像素樣本來計算關系。生成像素對的散點圖以及最佳拟合的最小二乘線。

函數:

reduceColumns(reducer, selectors, weightSelectors)

将 reducer 應用于集合的每個元素,使用給定的選擇器來确定輸入。

傳回結果字典,以輸出名稱為鍵。      

Apply a reducer to each element of a collection, using the given selectors to determine the inputs.

Returns a dictionary of results, keyed with the output names.

Arguments:

this:collection (FeatureCollection):

The collection to aggregate over.

reducer (Reducer):

The reducer to apply.

selectors (List):

A selector for each input of the reducer.

weightSelectors (List, default: null):

A selector for each weighted input of the reducer.

Returns: Dictionary

ui.Chart.array.values(array, axis, xL

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