ee.Number.lanczos

  • The Number.lanczos() method computes the Lanczos approximation of a given input number.

  • It returns a Number which is the calculated Lanczos approximation.

  • The input to the method is a Number representing the value for which the approximation is needed.

  • Examples demonstrate the output for various input values in both JavaScript and Python.

 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