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ee.Number.toUint32
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无符号 32 位整数。
示例
代码编辑器 (JavaScript)
// Cast a number to unsigned 32-bit integer: [0, 4294967295].
var number = ee.Number(100);
print('Number:', number);
var uint32Number = number.toUint32();
print('Number cast to uint32:', uint32Number);
/**
* Casting numbers to uint32 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 uint32 loses decimal precision.
var float = ee.Number(1.7);
print('Floating point value:', float);
var floatToUint32 = float.toUint32();
print('Floating point value cast to uint32:', floatToUint32);
// A number greater than uint32 range max cast to uint32 becomes uint32 range max.
var UINT32_MAX = 4294967295;
var outOfRangeHi = ee.Number(UINT32_MAX + 12345);
print('Greater than uint32 max:', outOfRangeHi);
var outOfRangeHiToUint32 = outOfRangeHi.toUint32();
print('Greater than uint32 max cast to uint32 becomes uint32 max:', outOfRangeHiToUint32);
// A number greater than uint32 range min cast to uint32 becomes uint32 range min.
var UINT32_MIN = 0;
var outOfRangeLo = ee.Number(UINT32_MIN - 12345);
print('Less than uint32 min:', outOfRangeLo);
var outOfRangeLoToUint32 = outOfRangeLo.toUint32();
print('Less than uint32 min cast to uint32 becomes uint32 min:', outOfRangeLoToUint32);
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 unsigned 32-bit integer: [0, 4294967295].
number = ee.Number(100)
print('Number:', number.getInfo())
uint32_number = number.toUint32()
print('Number cast to uint32:', uint32_number.getInfo())
"""Casting numbers to uint32 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 uint32 loses decimal precision.
float_number = ee.Number(1.7);
print('Floating point value:', float_number.getInfo())
float_to_uint32 = float_number.toUint32();
print('Floating point value cast to uint32:', float_to_uint32.getInfo())
# A number greater than uint32 range max cast to uint32
# becomes uint32 range max.
UINT32_MAX = 4294967295
out_of_range_hi = ee.Number(UINT32_MAX + 12345)
print('Greater than uint32 max:', out_of_range_hi.getInfo())
out_of_range_hi_to_uint32 = out_of_range_hi.toUint32()
print('Greater than uint32 max cast to uint32 becomes uint32 max:',
out_of_range_hi_to_uint32.getInfo())
# A number greater than uint32 range min cast to uint32
# becomes uint32 range min.
UINT32_MIN = 0
out_of_range_lo = ee.Number(UINT32_MIN - 12345)
print('Less than uint32 min:', out_of_range_lo.getInfo())
out_of_range_lo_to_uint32 = out_of_range_lo.toUint32()
print('Less than uint32 min cast to uint32 becomes uint32 min:',
out_of_range_lo_to_uint32.getInfo())
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最后更新时间 (UTC):2025-07-26。
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