Combining two cell arrays into one cell array changes format

Hello,

I would like to combine two cell arrays into one, such that the second array shows up as the last column in the first array. The first one (A) is a 129102x144 cell array, and the second one (B) is a 129102x1 cell array.

I tried using

C=cat(2,A,B) or C=horzcat(A,B)

Both of them work, but in the resulting array C, all the elements of A become characters with apostrophes, eg. before: A{1,1} = 1190898 after: C{1,1} = '1190898' . However, the elements of array B don't have the apostrophes. Before: B{1,1} = 22 and after: C{1,145} = 22.

Could anyone please explain why this is the case and what should I do to combine the two cell arrays A and B but get rid of the apostrophes?

Thank you very much for your help!

Answer 1

[Image Analyst]

What if you try

C = A; % Initialize
C(:,end+1) = B; % Tack on B.

What does this report:

whos A{1,1}
whos C{1,1}

[Tamas]

Both of them report cell class

[Image Analyst]

For some reason whos doesn't do anything. Try class instead.

And what do you expect the contents of A's cells to be? double? char? int32?

[Image Analyst]

Try this:

clc;
A = {12, 34; 56, 78}
B = {10;12}
C = A;
C(:,end+1) = B

class(C{1,1})
class(A{1,1})

Then try it with your A and B and see what it says. For me it says

A = 
    [12]    [34]
    [56]    [78]
B = 
    [10]
    [12]
C = 
    [12]    [34]    [10]
    [56]    [78]    [12]
ans =
double
ans =
double

[Tamas]

I think you found my bug! Both class(C{1,1}) and class (A{1,1}) return

ans=
char

whereas class(B{1,1}) returns

ans=
double

[Image Analyst]

Glad I helped you solve it.

[Tamas]

Thanks for your help!