n-D look up table editor - adding rows / columns

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Michal Schreiner
Michal Schreiner 2022-2-23
评论： Voss 2022-2-25
Hello,
I would like to ask if there is possibility to edit look up tables in n-D size (3-D in my case)?
I have matrice 9x5x6 and i need to put these data to the 3-D lookuptable.
For 2-D LUT i found that it is possible to add rows and columns, but not in n-D.
Is there any easy way how to create table from excel data?
Thanks for your help
  1 个评论
Voss
Voss 2022-2-25
Ran in:
It is possible to add new "slices" (i.e. 2D matrices) into a 3D array:
format compact
x = zeros(2,4,3)
x =
x(:,:,1) = 0 0 0 0 0 0 0 0 x(:,:,2) = 0 0 0 0 0 0 0 0 x(:,:,3) = 0 0 0 0 0 0 0 0
new_slice = ones(2,4);
x = cat(3,x(:,:,1:2),new_slice,x(:,:,3))
x =
x(:,:,1) = 0 0 0 0 0 0 0 0 x(:,:,2) = 0 0 0 0 0 0 0 0 x(:,:,3) = 1 1 1 1 1 1 1 1 x(:,:,4) = 0 0 0 0 0 0 0 0
That's a 2-by-4 matrix of all ones being inserted at index 3 in the third dimension of x. You can just as easily insert 2D matrices into a 3D array in any dimension, if the sizes are the same in the other dimensions.
Is this the kind of thing you're asking about?

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