What to use instead of horzcat for N-D Arrays?

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Douglas Anderson 2018-5-23

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评论： Douglas Anderson 2018-5-23

Hello.

I have a 3D array (let's say 3 x 4 x 100, call it AA) and want to add zeros to the end of the long dimension (let's say to get it to 3 x 4 x 200, adding on BB that is also 3 x 4 x 100 with zeros). horzcat() isn't happy, and [AA BB] won't do it.

Suggestions? Thanks!

Doug Anderson

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Answer 1

James Tursa 2018-5-23

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在 MATLAB Online 中打开

AA(end,end,200) = 0;

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Douglas Anderson 2018-5-23

Brilliant! Thank you!

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Answer 2

Steven Lord 2018-5-23

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The horzcat function concatenates horizontally, in dimension 2.

The vertcat function concatenates vertically, in dimension 1.

The cat function lets you concatenate in whatever dimension you specify. As shown in the example on the cat documentation page, you want to concatenate in dimension 3.