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ee.Array.first

  • TheArray.first method selects the value of the first element on an element-wise basis.

  • It takes a right-hand array or a single value as an argument and returns an Array.

  • Both the left-hand and right-hand values are expected to be Arrays.

 On an element-wise basis, selects the value of the first value.

UsageReturns
Array.first(right)Array
ArgumentTypeDetails
this:leftArrayThe left-hand value.
rightArrayThe right-hand value.

Examples

Code Editor (JavaScript)

varempty=ee.Array([],ee.PixelType.int8());print(empty.first(empty));// []print(ee.Array([0]).first(0));// [0]print(ee.Array([0,1,2]).first(1));// [0,1,2]print(ee.Array([0,1,2]).first(ee.Array([3,4,5])));// [0,1,2]print(ee.Array([3,4,5]).first(ee.Array([0,1,2])));// [3,4,5]

Python setup

See the Python Environment page for information on the Python API and usinggeemap for interactive development.

importeeimportgeemap.coreasgeemap

Colab (Python)

empty=ee.Array([],ee.PixelType.int8())display(empty.first(empty))# []display(ee.Array([0]).first(0))# [0]display(ee.Array([0,1,2]).first(1))# [0,1,2]display(ee.Array([0,1,2]).first(ee.Array([3,4,5])))# [0, 1, 2]display(ee.Array([3,4,5]).first(ee.Array([0,1,2])))# [3, 4, 5]

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Last updated 2023-10-06 UTC.