ee.Array.and

  • Array.and() performs an element-wise boolean "and" operation on two input arrays.

  • It returns 1 for each element if and only if both corresponding elements in the input arrays are non-zero, otherwise it returns 0.

  • The input arrays must have the same dimensions.

  • Any non-zero value is considered as true for the purpose of this operation.

 On an element-wise basis, returns 1 if and only if both values are non-zero.

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

Examples

Code Editor (JavaScript)

// Element-wise boolean "and" operator.
// Both arrays must be the same dimensions.
var arrayNeither = ee.Array([0, 0]);
var arrayFirst = ee.Array([1, 0]);
var arraySecond = ee.Array([0, 1]);
var arrayBoth = ee.Array([1, 1]);
// Any non-zero value is true.
var arrayLarger = ee.Array([-2, 2]);

print(arrayBoth.and(arrayLarger));  // [1, 1]
print(arrayBoth.and(arrayNeither));  // [0, 0]

print(arrayFirst.and(arraySecond));  // [0, 0]
print(arraySecond.and(arrayFirst));  // [0, 0]

print(arrayBoth.and(arrayFirst));  // [1, 0]
print(arrayBoth.and(arraySecond));  // [0, 1]

print(arrayNeither.and(arrayFirst));  // [0, 0]
print(arrayNeither.and(arraySecond));  // [0, 0]

// Works the same for all PixelTypes.
var arrayDouble = ee.Array([0.0, 2.0], ee.PixelType.double());
print(arrayBoth.and(arrayDouble));  // [0, 1]

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)

# Element-wise boolean "and" operator.
# Both arrays must be the same dimensions.
array_neither = ee.Array([0, 0])
array_first = ee.Array([1, 0])
array_second = ee.Array([0, 1])
array_both = ee.Array([1, 1])
# Any non-zero value is true.
array_larger = ee.Array([-2, 2])

display(array_both.And(array_larger))  # [1, 1]
display(array_both.And(array_neither))  # [0, 0]

display(array_first.And(array_second))  # [0, 0]
display(array_second.And(array_first))  # [0, 0]

display(array_both.And(array_first))  # [1, 0]
display(array_both.And(array_second))  # [0, 1]

display(array_neither.And(array_first))  # [0, 0]
display(array_neither.And(array_second))  # [0, 0]

# Works the same for all PixelTypes.
array_double = ee.Array([0.0, 2.0], ee.PixelType.double())
display(array_both.And(array_double))  # [0, 1]