How can I add a column vector to every column within a cell array?

Ok, so I now have a cell array with 1000 m*n matrices which I have fiddled with earlier.

What I now need to do is to each column within each of those m*n matrices, add a column vector 'A'

So, my m*n matrices look like:

1 2 3, 4 5 6, 7 8 9,

my column vector is

1, 2, 1,

so i want my output to be

2 3 4, 6 7 8, 8 9 10,

Again, please keep this nice and simple for me :)

Answer 1

[Matt Fig]

T = {magic(3); ones(3); zeros(3)};  % Initial cell array.
A = [1 2 3];  % The vector to add.
Tnew = cellfun(@(x) bsxfun(@plus,x,A'),T,'Un',0 ); % or 'T ='

Now compare:

T{1},Tnew{1}

BSXFUN is a great function to get to know if you are going to be spending time with MATLAB. And since you are working with cell arrays, you should learn CELLFUN too. It is like a FOR loop in one line!

[John]

Perfect, thanks...

[Azzi Abdelmalek]

he asked to make it simple, i don't think you do

[vinjamoori vikas]

Sir, I have total six matrices each with the size 4x4. I want to add all the combinations of the columns.

That means each column of one matrix with each other column of other matrices. I should get total of 4^6 summed vectors. Please suggest me something.

Answer 2

[Azzi Abdelmalek]

 A=[1 2 3; 4 5 6; 7 8 9]

 b=[1; 2; 1];
 [n,m]=size(A);A=A+repmat(b',1,m)

%now for all your 1000 matrix, if they are in a cell array M

 for k=1:1000
 A=M{k}
 % add a previous code
 b=[1; 2; 1];
 [n,m]=size(A);A=A+repmat(b',1,m)
 end

[John]

Ok, I'm having trouble - please bear with me, this is my first time on matlab!!!

I have the following code:
for k=1:1000
 A=T{k}
 [n,m]=size(A);A=A+repmat(a',1,m)
 end

Where T is the cell array with the 1000 matrices inside and a is my column vector. Can you tell me where I'm going wrong...?

[Azzi Abdelmalek]

it's ok, maby you are missing a vector a. can you post error message? or part of your cell array and your vector.

another thing; when you tape T{1} what did you get?