ee.Image.not

Returns 0 if the input is non-zero, and 1 otherwise.

UsageReturns
Image.not()Image
ArgumentTypeDetails
this: valueImage

The image to which the operation is applied.

Examples

Code Editor (JavaScript)

/**
 * Demonstrates the ee.Image.Not method.
 *
 * This example uses positive integers; non-integer and negative
 * values are allowed.
 */

var notZeros = ee.Image(3);  // Define an image where all pixels are not zero.
var zeros = notZeros.not();  // Pixels are not zeros, return zeros.
var ones = zeros.not();  // Pixels are zeros, return ones.

print('zeros:', zeros);
print('ones:', ones);

// Display images to the map; explore values using the Inspector.
var visParams = {min: 0, max: 1};
Map.addLayer(notZeros, visParams, 'notZeros');
Map.addLayer(zeros, visParams, 'zeros');
Map.addLayer(ones, visParams, 'ones');

Colab (Python)

"""Demonstrates the ee.Image.Not method.

This example uses positive integers; non-integer and negative
values are allowed.
"""

import pprint
import ee
ee.Authenticate()
ee.Initialize()

not_zeros = ee.Image(3)  # Define an image where all pixels are not zero.
zeros = not_zeros.Not()  # Pixels are not zeros, return zeros.
ones = zeros.Not()  # Pixels are zeros, return ones.

print('zeros:')
pprint.pprint(zeros.getInfo())
print('\nones:')
pprint.pprint(ones.getInfo())

# Sample images at a location and print the results.
loc = ee.Geometry.Point(0, 0)  # Location to sample image values.
print('not_zeros:', not_zeros.sample(loc, 1).first().get('constant').getInfo())
print('zeros:', zeros.sample(loc, 1).first().get('constant').getInfo())
print('ones:', ones.sample(loc, 1).first().get('constant').getInfo())