How to create a 4 dimensional array??

2011 12 1
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更新时间：2023 12 30
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This is just a general question because I can't find it anywhere, but does anyone know how to create a 4-D array? What would the basic code be for it or just a basic example of one would be great!

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Walter Roberson
Walter Roberson 2011-12-1

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Supposing A and B are 3 dimensional arrays, then cat(4,A,B) would join them along the fourth dimension.

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Jan
Jan 2011-12-1
This works for 2D arrays also, because they are just special 3D arrays. See: "cat(4, 1, 1)".

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the cyclist
the cyclist 2011-12-1
编辑：John Kelly 2015-2-26

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Here is a trivial example:
>> A = zeros(2,3,5,7);
>> A(1,2,1,2) = 6;
>> A(1,1,5,6) = 5;
>> A(2,1,1,:) = pi;

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