用法 | 返回 |
---|---|
Array.slice(axis, start, end, step) | 数组 |
参数 | 类型 | 详细信息 |
---|---|---|
此:array | 数组 | 要切片的数组。 |
axis | 整数,默认值:0 | 要切片的轴。 |
start | 整数,默认值:0 | 沿“轴”的第一个切片的坐标(含)。负数用于相对于数组末尾定位切片的起始位置,其中 -1 从轴上的最后一个位置开始,-2 从倒数第二个位置开始,依此类推。 |
end | 整数,默认值:null | 停止切片的坐标(不含)。默认情况下,这将是指定轴的长度。负数用于指定切片末尾相对于数组末尾的位置,其中 -1 将排除最后一个位置,-2 将排除最后两个位置,依此类推。 |
step | 整数,默认值:1 | 沿“轴”的切片分隔;系统将从“开始”(含)到“结束”(不含)的每个“步长”整数倍处获取一个切片。必须为正值。 |
示例
代码编辑器 (JavaScript)
var array1x6 = ee.Array([1, 2, 3, 4, 5, 6]); print(array1x6.slice()); // [1,2,3,4,5,6] print(array1x6.slice(0)); // [1,2,3,4,5,6] print(array1x6.slice(0, 0, 6, 1)); // [1,2,3,4,5,6] print(array1x6.slice(0, 0, 10, 1)); // [1,2,3,4,5,6] print(array1x6.slice(0, 2)); // [3,4,5,6] print(array1x6.slice(0, 5)); // [6] print(array1x6.slice(0, 6)); // [] print(array1x6.slice(0, 0, 2)); // [1,2] print(array1x6.slice(0, 0, 0)); // [] // Negative start and end. print(array1x6.slice(0, 0, -3)); // [1,2,3] print(array1x6.slice(0, -2, 6)); // [5,6] print(array1x6.slice(0, 0, 6, 2)); // [1,3,5] print(array1x6.slice(0, 0, 6, 3)); // [1,4] print(array1x6.slice(0, 0, 6, 4)); // [1,5] print(array1x6.slice(0, 0, 6, 6)); // [1] print(array1x6.slice(0, 2, 6, 2)); // [3,5] var array3x2 = ee.Array([[1, 2], [3, 4], [5, 6]]); print(array3x2.slice()); // [[1,2],[3,4],[5,6]] print(array3x2.slice(0)); // [[1,2],[3,4],[5,6]] print(array3x2.slice(0, 0)); // [[1,2],[3,4],[5,6]] print(array3x2.slice(0, 0, 1)); // [[1,2]] print(array3x2.slice(0, 0, 2)); // [[1,2],[3,4]] print(array3x2.slice(0, 0, 3, 1)); // [[1,2],[3,4],[5,6]] print(array3x2.slice(0, 0, 3, 2)); // [[1,2],[5,6]] print(array3x2.slice(0, 1, 3, 2)); // [[3,4]] print(array3x2.slice(0, 0, 3, 3)); // [[1,2]] print(array3x2.slice(1)); // [[1,2],[3,4],[5,6]] print(array3x2.slice(1, 1)); // [[2],[4],[6]] print(array3x2.slice(1, 0, 1)); // [[1],[3],[5]] var empty = ee.Array([], ee.PixelType.int8()); print(empty.slice()); // [] print(empty.slice(0)); // [] print(empty.slice(0, 0, 0, 1)); // []
import ee import geemap.core as geemap
Colab (Python)
array1x6 = ee.Array([1, 2, 3, 4, 5, 6]) display(array1x6.slice()) # [1, 2, 3, 4, 5, 6] display(array1x6.slice(0)) # [1, 2, 3, 4, 5, 6] display(array1x6.slice(0, 0, 6, 1)) # [1, 2, 3, 4, 5, 6] display(array1x6.slice(0, 0, 10, 1)) # [1, 2, 3, 4, 5, 6] display(array1x6.slice(0, 2)) # [3, 4, 5, 6] display(array1x6.slice(0, 5)) # [6] display(array1x6.slice(0, 6)) # [] display(array1x6.slice(0, 0, 2)) # [1, 2] display(array1x6.slice(0, 0, 0)) # [] # Negative start and end. display(array1x6.slice(0, 0, -3)) # [1, 2, 3] display(array1x6.slice(0, -2, 6)) # [5, 6] display(array1x6.slice(0, 0, 6, 2)) # [1, 3, 5] display(array1x6.slice(0, 0, 6, 3)) # [1, 4] display(array1x6.slice(0, 0, 6, 4)) # [1, 5] display(array1x6.slice(0, 0, 6, 6)) # [1] display(array1x6.slice(0, 2, 6, 2)) # [3, 5] array3x2 = ee.Array([[1, 2], [3, 4], [5, 6]]) display(array3x2.slice()) # [[1, 2], [3, 4], [5, 6]] display(array3x2.slice(0)) # [[1, 2], [3, 4], [5, 6]] display(array3x2.slice(0, 0)) # [[1, 2],[3, 4],[5, 6]] display(array3x2.slice(0, 0, 1)) # [[1, 2]] display(array3x2.slice(0, 0, 2)) # [[1, 2], [3, 4]] display(array3x2.slice(0, 0, 3, 1)) # [[1, 2], [3, 4], [5, 6]] display(array3x2.slice(0, 0, 3, 2)) # [[1, 2], [5, 6]] display(array3x2.slice(0, 1, 3, 2)) # [[3, 4]] display(array3x2.slice(0, 0, 3, 3)) # [[1, 2]] display(array3x2.slice(1)) # [[1, 2], [3, 4], [5, 6]] display(array3x2.slice(1, 1)) # [[2], [4], [6]] display(array3x2.slice(1, 0, 1)) # [[1], [3], [5]] empty = ee.Array([], ee.PixelType.int8()) display(empty.slice()) # [] display(empty.slice(0)) # [] display(empty.slice(0, 0, 0, 1)) # []