Overloaded Operators for the ee.Number Object Class

Tutorial created by **David Montero Loaiza**: GitHub | Twitter

• GitHub Repo: https://github.com/davemlz/eemont

• PyPI link: https://pypi.org/project/eemont/

• Conda-forge: https://anaconda.org/conda-forge/eemont

• Documentation: https://eemont.readthedocs.io/

• More tutorials: https://github.com/davemlz/eemont/tree/master/docs/tutorials

Let’s start!

If required, please uncomment:

#!pip install eemont
#!pip install geemap

Import the required packages.

import ee, eemont, geemap

Authenticate and Initialize Earth Engine and geemap.

Map = geemap.Map()

Let’s define some ee.Number objects as NIR and Red values for NDVI computation:

R1 = ee.Number(0.20)
R2 = ee.Number(0.12)
N1 = ee.Number(0.64)
N2 = ee.Number(0.58)

Overloaded Operators

eemont has overloaded the binary operators, rich comparisons and unary operators in the following list for the ee.Number class:

(+, -, *, /, //, %, **, <<, >>, &, |, <, <=, ==, !=, >, >=, -, ~)

Therefore, you can now use them for number operations!

NDVI1 = (N1 - R1)/(N1 + R1)
NDVI2 = (N2 - R2)/(N2 + R2)

The result is stored as an ee.Number class. Let’s check the first one:

NDVI1.getInfo()

0.5238095238095237

Now, let’s see the second result:

NDVI2.getInfo()

0.6571428571428571

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Overloaded Operators for the ee.List Object Class