How to create a 3D variable with the third dimension is 1

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Zhiyun
Zhiyun 2023-6-27
评论： Stephen23 2023-6-27
I want to create a 3D variable with its third dimension is 1. However, functions such as zeros, ones and rand will ignore trailing dimensions with a size of 1.
So, if I try
A = zeros(100,100,1);
I would only have a 2D variable.
  1 个评论
Stephen23
Stephen23 2023-6-27
Ran in:
"I want to create a 3D variable with its third dimension is 1."
A = zeros(100,100);
size(A,3)
ans = 1
"I would only have a 2D variable."
All arrays implicitly have infinite trailing scalar dimensions.

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回答（1 个）

Nikhil Baishkiyar
Nikhil Baishkiyar 2023-6-27
编辑：Nikhil Baishkiyar 2023-6-27
Ran in:
This question has been asked before. This is the link
But basically Arrays in MATLAB have an implied infinitely long series of trailing singleton dimensions. You can index into them with no problem.
a = rand(100,100);
a(50,35,1)
ans = 0.7191

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