ee.Number.toShort

将输入值强制转换为有符号的 16 位整数。

用法	返回
Number.toShort()	数字

参数	类型	详细信息
此：input	数字	输入值。

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.toShort();
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.toShort();
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.toShort();
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.toShort();
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)
display('Number:', number)

short_number = number.toShort()
display('Number cast to short:', short_number)


"""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)
display('Floating point value:', float_number)

float_to_short = float_number.toShort()
display('Floating point value cast to short:', float_to_short)

# 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)
display('Greater than short max:', out_of_range_hi)

out_of_range_hi_to_short = out_of_range_hi.toShort()
display('Greater than short max cast to short becomes short max:',
      out_of_range_hi_to_short)

# 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)
display('Less than short min:', out_of_range_lo)

out_of_range_lo_to_short = out_of_range_lo.toShort()
display('Less than short min cast to short becomes short min:',
      out_of_range_lo_to_short)