ee.Image.not

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

Usage	Returns
Image.not()	Image

Argument	Type	Details
this: value	Image	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');

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)

"""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())