在单个语句中声明多维数组
假设我想用一条语句创建一个维度为 3×4×4 的矩阵 A（即一个等式，没有任何串联），如下所示：
%// This is one continuous row
A = [ [ [3 3 4 4], [8 11 8 7], [4 4 6 7], [4 7 6 6] ]; ...
[ [3 2 4 2], [9 6 4 12], [4 3 3 4], [5 10 7 3] ]; ...
[ [2 2 1 2], [3 3 3 2], [2 2 2 2], [3 3 3 3] ] ]
Let's say I want to create a matrix A with dimensions 3×4×4 with a single statement (i.e one equality, without any concatenations), something like this:
%// This is one continuous row
A = [ [ [3 3 4 4], [8 11 8 7], [4 4 6 7], [4 7 6 6] ]; ...
[ [3 2 4 2], [9 6 4 12], [4 3 3 4], [5 10 7 3] ]; ...
[ [2 2 1 2], [3 3 3 2], [2 2 2 2], [3 3 3 3] ] ]
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
您可以使用
cat来“分层”例如，沿第三维的二维矩阵：从技术上讲，这是串联，但它仍然只是一个赋值。
You can use
catto "layer" 2-D matrices along the third dimension, for example:Technically this is concatenation, but it's still only one assignment.
连接运算符
[]仅适用于二维，例如[ab]水平连接或[a; b]垂直连接。要创建更高维度的矩阵，您可以使用reshape函数，或初始化矩阵您想要的大小，然后用您的值填充它。例如，您可以这样做：或者这样：
The concatenation operator
[]will only work in 2 dimensions, like[a b]to concatenate horizontally or[a; b]to concatenate vertically. To create matrices with higher dimensions you can use thereshapefunction, or initialize a matrix of the size you want and then fill it with your values. For example, you could do this:Or this: