Concatenate rows within a 3D cell array

I originally had a 3D structure with 6 fields.

structure(1:17,1:10,1:16).A
structure(1:17,1:10,1:16).B
structure(1:17,1:10,1:16).C
structure(1:17,1:10,1:16).D
structure(1:17,1:10,1:16).E
structure(1:17,1:10,1:16).F

For each location, I would like to concatente A,C&E so I end up with a 3D (17x10x16) cell array with A,C&E in horizontal cat for each location.

For example, structure(17,10,16).A is a 1 x10 cell array

[2×149 double]    [2×146 double]    [2×142 double]    [2×144 double]    [2×147 double] [2×147 double]    [2×150 double]    [2×145 double]    [2×141 double]    [2×145 double]

structure(17,10,16).C is a 1 x10 cell array

[2×479 double]    [2×482 double]    [2×487 double]    [2×486 double]    [2×475 double] [2×489 double]    [2×491 double]    [2×482 double]    [2×474 double]    [2×466 double]

structure(17,10,16).E is a 1 x10 cell array

[2×454 double]    [2×461 double]    [2×500 double]    [2×464 double]    [2×463 double] [2×475 double]    [2×499 double]    [2×468 double]    [2×483 double]    [2×497 double]

I started by:

cat_1=arrayfun(@(x) [x.A;x.C;x.E],structure,'uni', false)

It gives a 17x10x16 cell array with a {3x10 cell} in each location.

For example , cat_1{17,10,16} is

[2×149  double]  [2×146  double]  [2×142  double]  [2×144  double]  [2×147  double]  [2×147  double]  [2×150  double]  [2×145  double]  [2×141  double]  [2×145  double] 
[2×479  double]  [2×482  double]  [2×487  double]  [2×486  double]  [2×475  double]  [2×489  double]  [2×491  double]  [2×482  double]  [2×474  double]  [2×466  double] 
[2×454  double]  [2×461  double]  [2×500  double]  [2×464  double]  [2×463  double]  [2×475  double]  [2×499  double]  [2×468  double]  [2×483  double]  [2×497  double] 

Now, I am stuck on concatenating each column so I endup with a {1x10 cell} in each locacion.

For example, cat_2{17,10,16} to be

[2x1082  double]  [2x1089  double]  [2x1129  double]  [2x1094  double]  [2x1085  double]  [2x1111  double]  [2x1140  double]  [2x1095  double]  [2x1098  double]  [2x1108  double] 

I have tried several combiantions of cellfun and arrayfun with horcat, cat in different dimensions but I do not get the above organization for each location of the 3D cell array.

Thank you,

Answer 1

[Stephen23]

Try something like this:

baz = @(c) horzcat(c{:});
foo = @(x) cellfun(baz, num2cell([x.A;x.C;x.E],1), 'uni',0);
arrayfun(foo, structure, 'uni',false)