Julia Array reshape()用法及代码示例

这个reshape()是 julia 中的一个内置函数，用于返回与指定数组具有相同数据但具有不同指定维度大小的数组。

用法：
reshape(A, dims)

参数：

A:指定数组。
dims:指定尺寸。

返回值：它返回一个与指定数组具有相同数据但具有不同指定维度大小的数组。

范例1：


# Julia program to illustrate 
# the use of Array reshape() method
  
# Getting an array with the same data
# as the specified 1D array, but with
# (2 * 2) dimension sizes.
A = [1, 2, 3, 4];
println(reshape(A, (2, 2)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (4 * 4) dimension sizes.
B = [1  2  3  4; 5  6  7  8; 9  10  11  12; 13  14  15  16];
println(reshape(B, (4, 4)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (2 * 8) dimension sizes.
C = [1  5   9  13; 2  6  10  14; 3  7  11  15; 4  8  12  16];
println(reshape(C, 2,:))

输出：

范例2：


# Julia program to illustrate 
# the use of Array reshape() method
  
# Getting an array with the same data
# as the specified 1D array, but with
# (2 * 2) dimension sizes.
A = ["a", "b", "c", "d"];
println(reshape(A, (2, 2)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (2 * 2) dimension sizes.
B = ["a" "b"; "c" "d"];
println(reshape(B, (2, 2)))
  
# Getting an array with the same data
# as the specified 3D array, but with
# (2 * 2*3) dimension sizes.
C = cat(["a" "b"; "c" "d"], ["e" "f"; "g" "h"], ["i" "j"; "k" "l"], dims = 3);
println(reshape(C, (2, 2, 3)))

输出：

相关用法

注：本文由纯净天空筛选整理自Kanchan_Ray大神的英文原创作品 Reshaping array dimensions in Julia | Array reshape() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。