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ee.Number.bitCount
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Calcola il numero di bit impostati su 1 nella rappresentazione binaria in complemento a due a 64 bit dell'input.
| Utilizzo | Resi |
|---|
Number.bitCount() | Numero |
| Argomento | Tipo | Dettagli |
|---|
questo: input | Numero | Il valore dell'input. |
Esempi
Editor di codice (JavaScript)
print(ee.Number(0).bitCount()); // [0]
print(ee.Number(1).bitCount()); // [1]
print(ee.Number(2).bitCount()); // [1]
print(ee.Number(3).bitCount()); // [2]
print(ee.Number(0xFFFF).bitCount()); // [16]
// https://en.wikipedia.org/wiki/Two's_complement signed values.
print(ee.Number(-1).bitCount()); // [64]
print(ee.Number(-1, ee.PixelType.int8()).bitCount()); // [64]
print(ee.Number(-2).bitCount()); // [63]
Configurazione di Python
Consulta la pagina
Ambiente Python per informazioni sull'API Python e sull'utilizzo di
geemap per lo sviluppo interattivo.
import ee
import geemap.core as geemap
Colab (Python)
print(ee.Number(0).bitCount().getInfo()) # [0]
print(ee.Number(1).bitCount().getInfo()) # [1]
print(ee.Number(2).bitCount().getInfo()) # [1]
print(ee.Number(3).bitCount().getInfo()) # [2]
print(ee.Number(0xFFFF).bitCount().getInfo()) # [16]
# https://en.wikipedia.org/wiki/Two's_complement signed values.
print(ee.Number(-1).bitCount().getInfo()) # [64]
print(ee.Number(-1).toInt8().bitCount().getInfo()) # [64]
print(ee.Number(-2).bitCount().getInfo()) # [63]
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-07-26 UTC.
[null,null,["Ultimo aggiornamento 2025-07-26 UTC."],[[["\u003cp\u003eDetermines the quantity of one-bits (or set bits) present in the binary representation of a number.\u003c/p\u003e\n"],["\u003cp\u003eAccepts a single numerical input and returns the count of one-bits as a number.\u003c/p\u003e\n"],["\u003cp\u003eOperates on the 64-bit two's complement binary representation of the input number, ensuring compatibility with signed values.\u003c/p\u003e\n"],["\u003cp\u003eProvides functionality in both JavaScript and Python environments within the Earth Engine platform.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate the usage of the function with various inputs including positive, negative and hexadecimal numbers.\u003c/p\u003e\n"]]],[],null,["# ee.Number.bitCount\n\nCalculates the number of one-bits in the 64-bit two's complement binary representation of the input.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------|---------|\n| Number.bitCount`()` | 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(ee.Number(0).bitCount()); // [0]\nprint(ee.Number(1).bitCount()); // [1]\nprint(ee.Number(2).bitCount()); // [1]\nprint(ee.Number(3).bitCount()); // [2]\nprint(ee.Number(0xFFFF).bitCount()); // [16]\n\n// https://en.wikipedia.org/wiki/Two's_complement signed values.\nprint(ee.Number(-1).bitCount()); // [64]\nprint(ee.Number(-1, ee.PixelType.int8()).bitCount()); // [64]\nprint(ee.Number(-2).bitCount()); // [63]\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(ee.Number(0).bitCount().getInfo()) # [0]\nprint(ee.Number(1).bitCount().getInfo()) # [1]\nprint(ee.Number(2).bitCount().getInfo()) # [1]\nprint(ee.Number(3).bitCount().getInfo()) # [2]\nprint(ee.Number(0xFFFF).bitCount().getInfo()) # [16]\n\n# https://en.wikipedia.org/wiki/Two's_complement signed values.\nprint(ee.Number(-1).bitCount().getInfo()) # [64]\nprint(ee.Number(-1).toInt8().bitCount().getInfo()) # [64]\nprint(ee.Number(-2).bitCount().getInfo()) # [63]\n```"]]
