ee.Number.toShort

Truyền giá trị đầu vào thành số nguyên 16 bit có dấu.

Cách sử dụng	Giá trị trả về
Number.toShort()	Số

Đối số	Loại	Thông tin chi tiết
this: input	Số	Giá trị đầu vào.

Ví dụ

Trình soạn thảo mã (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);

Thiết lập Python

Hãy xem trang Môi trường Python để biết thông tin về API Python và cách sử dụng geemap cho quá trình phát triển tương tác.

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.toShort()
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.toShort()
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.toShort()
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.toShort()
print('Less than short min cast to short becomes short min:',
      out_of_range_lo_to_short.getInfo())