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ee.Number.digamma
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Computes the digamma function of the input.
| Usage | Returns | Number.digamma() | Number |
| Argument | Type | Details | this: input | Number | The input value. |
Examples
Code Editor (JavaScript)
print('Digamma for -1.5', ee.Number(-1.5).digamma()); // 0.703156637
print('Digamma for -1', ee.Number(-1).digamma()); // -Infinity
print('Digamma for 0', ee.Number(0).digamma()); // -Infinity
print('Digamma for 0.5', ee.Number(0.5).digamma()); // -1.963510028
print('Digamma for 1', ee.Number(1).digamma()); // -0.577215667
print('Digamma for 100', ee.Number(100).digamma()); // 4.600161852
print('Digamma for 1e13', ee.Number(1e13).digamma()); // 29.933606208
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('Digamma for -1.5:', ee.Number(-1.5).digamma().getInfo()) # 0.703156637
print('Digamma for -1:', ee.Number(-1).digamma().getInfo()) # -Infinity
print('Digamma for 0:', ee.Number(0).digamma().getInfo()) # -Infinity
print('Digamma for 0.5:', ee.Number(0.5).digamma().getInfo()) # -1.963510028
print('Digamma for 1:', ee.Number(1).digamma().getInfo()) # -0.577215667
print('Digamma for 100:', ee.Number(100).digamma().getInfo()) # 4.600161852
print('Digamma for 1e13:', ee.Number(1e13).digamma().getInfo()) # 29.933606208
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["\u003cp\u003eThe \u003ccode\u003edigamma()\u003c/code\u003e function calculates the digamma function of a given input number.\u003c/p\u003e\n"],["\u003cp\u003eThe input to the function is a number, and the output is the calculated digamma value, also a number.\u003c/p\u003e\n"],["\u003cp\u003eSpecial cases like input values of -1 and 0 result in negative infinity as the output.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate how the \u003ccode\u003edigamma()\u003c/code\u003e function can be used within both JavaScript and Python Earth Engine environments.\u003c/p\u003e\n"]]],[],null,["# ee.Number.digamma\n\nComputes the digamma function of the input.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------|---------|\n| Number.digamma`()` | Number |\n\n| Argument | Type | Details |\n|---------------|--------|------------------|\n| this: `input` | Number | The input value. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nprint('Digamma for -1.5', ee.Number(-1.5).digamma()); // 0.703156637\nprint('Digamma for -1', ee.Number(-1).digamma()); // -Infinity\nprint('Digamma for 0', ee.Number(0).digamma()); // -Infinity\nprint('Digamma for 0.5', ee.Number(0.5).digamma()); // -1.963510028\nprint('Digamma for 1', ee.Number(1).digamma()); // -0.577215667\nprint('Digamma for 100', ee.Number(100).digamma()); // 4.600161852\nprint('Digamma for 1e13', ee.Number(1e13).digamma()); // 29.933606208\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nprint('Digamma for -1.5:', ee.Number(-1.5).digamma().getInfo()) # 0.703156637\nprint('Digamma for -1:', ee.Number(-1).digamma().getInfo()) # -Infinity\nprint('Digamma for 0:', ee.Number(0).digamma().getInfo()) # -Infinity\nprint('Digamma for 0.5:', ee.Number(0.5).digamma().getInfo()) # -1.963510028\nprint('Digamma for 1:', ee.Number(1).digamma().getInfo()) # -0.577215667\nprint('Digamma for 100:', ee.Number(100).digamma().getInfo()) # 4.600161852\nprint('Digamma for 1e13:', ee.Number(1e13).digamma().getInfo()) # 29.933606208\n```"]]