ee.Array.lt

  • Array.lt is an element-wise comparison that returns 1 if the left-hand value is strictly less than the right-hand value, and 0 otherwise.

  • The function takes two array arguments (left and right) and returns a new array with the comparison results.

  • The output array has the same dimensions as the input arrays, with each element representing the comparison outcome of the corresponding elements in the input arrays.

  • It can be applied to empty arrays, single-element arrays, and multi-element arrays, with examples provided in JavaScript and Python.

 On an element-wise basis, returns 1 if and only if the first value is less than the second.

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

Examples

Code Editor (JavaScript)

var empty = ee.Array([], ee.PixelType.int8());
print(empty.lt(empty));  // []

print(ee.Array([0]).lt([0]));  // [0]
print(ee.Array([1]).lt([2]));  // [1]
print(ee.Array([2]).lt([1]));  // [0]

print(ee.Array([-1, 0, 1]).lt([-2, 1, 0]));  // [0,1,0]

Python setup

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

import ee
import geemap.core as geemap

Colab (Python)

empty = ee.Array([], ee.PixelType.int8())
display(empty.lt(empty))  # []

display(ee.Array([0]).lt([0]))  # [0]
display(ee.Array([1]).lt([2]))  # [1]
display(ee.Array([2]).lt([1]))  # [0]

display(ee.Array([-1, 0, 1]).lt([-2, 1, 0]))  # [0, 1, 0]