Concatenation of 4x8 cell arrays

My CellArray looks like this,

Columns 1 through 4

                []    [4x32   double]    [4x2511 double]    [4x1874 double]
    [4x841 double]    [4x1810 double]    [4x2269 double]    [4x4312 double]
                []    [4x256  double]    [4x841  double]    [4x1101 double]
                []                 []                 []                 []

Columns 5 through 8

    [4x1586 double]    [4x792  double]                []    [4x1   double]
    [4x3861 double]    [4x1607 double]    [4x878 double]    [4x790 double]
    [4x885  double]    [4x1049 double]    [4x297 double]    [4x6   double]
                 []                 []                []                []

      [4x1586 double]    [4x792  double]                []    [4x1   double]
      [4x3861 double]    [4x1607 double]    [4x878 double]    [4x790 double]
      [4x885  double]    [4x1049 double]    [4x297 double]    [4x6   double]
                   []                 []                []                []

Now I have to concatenate the cells leaving out the empty cells and the result should be 4x double in one cell.Please help me out.I am very much new to matlab. Thanks in advance..

Answer 1

[Friedrich]

Hi,

try

cell2mat(your_cell_variable)

So a small example would be

a{1,1} = rand(4,10);
a{1,2} = [];
a{2,1} = [];
a{2,2} = rand(4,100)
b = cell2mat(a);
dim = size(b)

which leads to

a = 

      [4x10 double]                []
                 []    [4x100 double]

dim =

       4   110

[Manos]

hi Friedrich,

Thanx for your valuable reply.

Its working with above example but if i am taking for 4x8 its giving me error,

the example I have tried is,

a{1,1} =[] ;

a{1,2} = rand(4,32);

a{1,3} = rand(4,2511);

a{1,4} = rand(4,1874);

a{1,5} = rand(4,1586);

a{1,6} = rand(4,792);

a{1,7} = [];

a{1,8} = rand(4,1);

a{2,1} = rand(4,841);

a{2,2} = rand(4,1810);

a{2,3} = rand(4,2269);

a{2,4} = rand(4,4312);

a{2,5} = rand(4,3861);

a{2,6} = rand(4,1607);

a{2,7} = rand(4,878);

a{2,8} = rand(4,790);

a{3,1} = [];

a{3,2} = rand(4,256);

a{3,3} = rand(4,841);

a{3,4} = rand(4,1101);

a{3,5} = rand(4,885);

a{3,6} = rand(4,1049);

a{3,7} = rand(4,297);

a{3,8} = rand(4,6);

a{4,1} =[] ;

a{4,2} =[];

a{4,3} =[] ;

a{4,4} =[] ;

a{4,5} =[] ;

a{4,6} =[] ;

a{4,7} =[] ;

a{4,8} =[] ;

b = cell2mat(a);

the error is,

CAT arguments dimensions are not consistent.

Error in ==> cell2mat at 84

m = cat(1,m{:});

Error in ==> Untitled99 at 50

b = cell2mat(a);

What should be done to get rid of this issue.

[Friedrich]

Okay in that case use:

b = cell2mat(reshape(a,1,32));

[Manos]

Thanx a lot its working ..

greets,

Manros