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ee.Number.short
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
将输入值强制转换为有符号的 16 位整数。
示例
代码编辑器 (JavaScript)
// Cast a number to signed 16-bit integer: [-32768, 32767].
var number = ee.Number(100);
print('Number:', number);
var shortNumber = number.short();
print('Number cast to short:', shortNumber);
/**
* Casting numbers to short that are outside of its range and precision can
* modify the resulting value, note the behavior of the following scenarios.
*/
// A floating point number cast to short loses decimal precision.
var float = ee.Number(1.7);
print('Floating point value:', float);
var floatToShort = float.short();
print('Floating point value cast to short:', floatToShort);
// A number greater than short range max cast to short becomes short range max.
var SHORT_MAX = 32767;
var outOfRangeHi = ee.Number(SHORT_MAX + 12345);
print('Greater than short max:', outOfRangeHi);
var outOfRangeHiToShort = outOfRangeHi.short();
print('Greater than short max cast to short becomes short max:', outOfRangeHiToShort);
// A number greater than short range min cast to short becomes short range min.
var SHORT_MIN = -32768;
var outOfRangeLo = ee.Number(SHORT_MIN - 12345);
print('Less than short min:', outOfRangeLo);
var outOfRangeLoToShort = outOfRangeLo.short();
print('Less than short min cast to short becomes short min:', outOfRangeLoToShort);
Python 设置
如需了解 Python API 和如何使用 geemap
进行交互式开发,请参阅
Python 环境页面。
import ee
import geemap.core as geemap
Colab (Python)
# Cast a number to signed 16-bit integer: [-32768, 32767].
number = ee.Number(100)
print('Number:', number.getInfo())
short_number = number.short()
print('Number cast to short:', short_number.getInfo())
"""Casting numbers to short that are outside of its range and precision can
modify the resulting value, note the behavior of the following scenarios.
"""
# A floating point number cast to short loses decimal precision.
float_number = ee.Number(1.7)
print('Floating point value:', float_number.getInfo())
float_to_short = float_number.short()
print('Floating point value cast to short:', float_to_short.getInfo())
# A number greater than short range max cast to short becomes short range max.
SHORT_MAX = 32767
out_of_range_hi = ee.Number(SHORT_MAX + 12345)
print('Greater than short max:', out_of_range_hi.getInfo())
out_of_range_hi_to_short = out_of_range_hi.short()
print('Greater than short max cast to short becomes short max:',
out_of_range_hi_to_short.getInfo())
# A number greater than short range min cast to short becomes short range min.
SHORT_MIN = -32768
out_of_range_lo = ee.Number(SHORT_MIN - 12345)
print('Less than short min:', out_of_range_lo.getInfo())
out_of_range_lo_to_short = out_of_range_lo.short()
print('Less than short min cast to short becomes short min:',
out_of_range_lo_to_short.getInfo())
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2025-08-03。
[null,null,["最后更新时间 (UTC):2025-08-03。"],[[["\u003cp\u003eThe \u003ccode\u003eshort()\u003c/code\u003e function casts a given Earth Engine Number to a signed 16-bit integer, effectively converting it to a value within the range of -32768 to 32767.\u003c/p\u003e\n"],["\u003cp\u003eWhen applied to floating-point numbers, the \u003ccode\u003eshort()\u003c/code\u003e function truncates the decimal portion, resulting in a loss of precision.\u003c/p\u003e\n"],["\u003cp\u003eIf the input number exceeds the maximum value of a signed 16-bit integer (32767), the function returns the maximum value; conversely, if the input falls below the minimum value (-32768), the function returns the minimum value.\u003c/p\u003e\n"],["\u003cp\u003eThis function is useful for ensuring that numerical data conforms to the constraints of a 16-bit integer representation, which can be important for memory management and compatibility with certain data formats.\u003c/p\u003e\n"]]],[],null,["# ee.Number.short\n\nCasts the input value to a signed 16-bit integer.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------|---------|\n| Number.short`()` | 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\n// Cast a number to signed 16-bit integer: [-32768, 32767].\nvar number = ee.Number(100);\nprint('Number:', number);\n\nvar shortNumber = number.short();\nprint('Number cast to short:', shortNumber);\n\n\n/**\n * Casting numbers to short that are outside of its range and precision can\n * modify the resulting value, note the behavior of the following scenarios.\n */\n\n// A floating point number cast to short loses decimal precision.\nvar float = ee.Number(1.7);\nprint('Floating point value:', float);\n\nvar floatToShort = float.short();\nprint('Floating point value cast to short:', floatToShort);\n\n// A number greater than short range max cast to short becomes short range max.\nvar SHORT_MAX = 32767;\nvar outOfRangeHi = ee.Number(SHORT_MAX + 12345);\nprint('Greater than short max:', outOfRangeHi);\n\nvar outOfRangeHiToShort = outOfRangeHi.short();\nprint('Greater than short max cast to short becomes short max:', outOfRangeHiToShort);\n\n// A number greater than short range min cast to short becomes short range min.\nvar SHORT_MIN = -32768;\nvar outOfRangeLo = ee.Number(SHORT_MIN - 12345);\nprint('Less than short min:', outOfRangeLo);\n\nvar outOfRangeLoToShort = outOfRangeLo.short();\nprint('Less than short min cast to short becomes short min:', outOfRangeLoToShort);\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\n# Cast a number to signed 16-bit integer: [-32768, 32767].\nnumber = ee.Number(100)\nprint('Number:', number.getInfo())\n\nshort_number = number.short()\nprint('Number cast to short:', short_number.getInfo())\n\n\n\"\"\"Casting numbers to short that are outside of its range and precision can\nmodify the resulting value, note the behavior of the following scenarios.\n\"\"\"\n\n# A floating point number cast to short loses decimal precision.\nfloat_number = ee.Number(1.7)\nprint('Floating point value:', float_number.getInfo())\n\nfloat_to_short = float_number.short()\nprint('Floating point value cast to short:', float_to_short.getInfo())\n\n# A number greater than short range max cast to short becomes short range max.\nSHORT_MAX = 32767\nout_of_range_hi = ee.Number(SHORT_MAX + 12345)\nprint('Greater than short max:', out_of_range_hi.getInfo())\n\nout_of_range_hi_to_short = out_of_range_hi.short()\nprint('Greater than short max cast to short becomes short max:',\n out_of_range_hi_to_short.getInfo())\n\n# A number greater than short range min cast to short becomes short range min.\nSHORT_MIN = -32768\nout_of_range_lo = ee.Number(SHORT_MIN - 12345)\nprint('Less than short min:', out_of_range_lo.getInfo())\n\nout_of_range_lo_to_short = out_of_range_lo.short()\nprint('Less than short min cast to short becomes short min:',\n out_of_range_lo_to_short.getInfo())\n```"]]