append cell array #2 to cell array #1 to get a final cell array of cells

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Having trouble combining two arrays. Thanks for any advice.

A-- cell array #1: 1x184 (first 3 cells and last cell shown below)

4657x2 double 85x2 double 39x2 double.......87x2 double (last cell)

B --- cell array #2: 1x2

155x2 double 155x2 double

C -- #3 to also be a cell array 1x186 (desired)

4657x2 double 85x2 double 39x2 double.......87x2 double 155x2 double 155x2 double

I have tried --

C = cat(2,A,B);

C= [A;B]

C = horzcat(A,B); --> sometimes works. If I clear workspace, it will work if I run the code twice. Otherwise, it is unpredictable when it works and I get the error "Dimensions of arrays being concatenated are not consistent." How can I get this to work every time?

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Adam 2019-10-18

编辑：Adam 2019-10-18

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horzcat should work fine, as should its equivalent:

C = [A B];

If it doesn't work every time there must be something you are missing out from your example, that occurs in other cases.

Claire 2019-10-18

Cell array "A" is a subset of cell array "D"

A = (D(~cellfun('isempty',D)));

Further, cell array "D" is a subset of cell array "E". E is the original cell array.

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Answer 1

Kaashyap Pappu 2019-10-21

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The operations carried out by either:

C = [A B];
C = horzcat(A,B);
C = cat(2,A,B);

Should work for your requirement. There is a chance that “A” could have more than 1 row based on the cell arrays “E” and “D”, which could create problems for concatenation. This could happen if "E" or "D" have more than 1 row.

Hope this helps!

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Claire 2019-10-21

Thank you for your comment. For some reason, A was alternating its dimensions after each iteration. For example, on iteration one A was 184x1. On iteration two, A was 1x184 (which is why the code always reliably worked on the second iteration).

I am unsure of why it was doing this, but I then put in a line to intentionally transpose both A and B to be vertical cell arrays and now I no longer have this error.

A = transpose (A);

B = transpose(B);

C = cat(1,A,B);

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append cell array #2 to cell array #1 to get a final cell array of cells

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