Shift elements in a 3D array

Question

Vaishnavi Sree Jeganathan 2022-12-3

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https://ww2.mathworks.cn/matlabcentral/answers/1870247-shift-elements-in-a-3d-array

回答： Voss 2022-12-3

Hi,

I have a 3D array. I would like to remove few elements (say, I want to remove all 120s in the 3D array). Once I remove them, I would like to add zeros at the end to maintain the same vector length.

Could anyone please suggest an option to do this?

Thank you so much

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Answer 1

Voss 2022-12-3

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Here's an example with a 2x3x2 array, removing all the 9s and appending 0s:

data = reshape(1:12,[2 3 2])
data = 
data(:,:,1) =

     1     3     5
     2     4     6


data(:,:,2) =

     7     9    11
     8    10    12
siz = size(data);
idx = data == 9;
data(idx) = [];
data(end+1:end+nnz(idx)) = 0;
data = reshape(data,siz)
data = 
data(:,:,1) =

     1     3     5
     2     4     6


data(:,:,2) =

     7    10    12
     8    11     0