ee.Number.lanczos

  • The lanczos() function calculates the Lanczos approximation of a given number.

  • It takes a single input, which is the number for which to compute the approximation.

  • The output is the Lanczos approximation of the input number.

  • This function can be accessed within both JavaScript and Python environments using the Earth Engine API.

Computes the Lanczos approximation of the input.

UsageReturns
Number.lanczos()Number
ArgumentTypeDetails
this: inputNumberThe input value.

Examples

Code Editor (JavaScript)

print('Lanczos approx. of -1', ee.Number(-1).lanczos());  // Infinity
print('Lanczos approx. of -0.9', ee.Number(-0.9).lanczos());  // 524.955196990
print('Lanczos approx. of 0', ee.Number(0).lanczos());  // 32.946318679
print('Lanczos approx. of 10', ee.Number(10).lanczos());  // 2.281783181
print('Lanczos approx. of 1e10', ee.Number(1e10).lanczos());  // 1.000000001

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)

print('Lanczos approx. of -1:', ee.Number(-1).lanczos().getInfo())  # Infinity
print('Lanczos approx. of -0.9:',
      ee.Number(-0.9).lanczos().getInfo())  # 524.955196990
print('Lanczos approx. of 0:', ee.Number(0).lanczos().getInfo())  # 32.946318679
print('Lanczos approx. of 10:',
      ee.Number(10).lanczos().getInfo())  # 2.281783181
print('Lanczos approx. of 1e10:',
      ee.Number(1e10).lanczos().getInfo())  # 1.000000001