extract portion of each cell array elements using cellfun

I have a 5x9 cell array A. Each cell in A contains a 3x1 cell. In each cells, I have mesh data for a surface. For example A{1,1} have three 119x755 matrix in each cell. But the mesh matrix size in A{1,2} are not in the same size of A{1,1}. I want to make the mesh size all the same in each cell array for example 100x700. How can I do it using cellfun?

A =

3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell

3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell

3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell

3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell

3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell 3x1 cell

A{1,1} =

119x755 double

119x755 double

119x755 double

A{1,2} =

122x764 double

122x764 double

122x764 double

[Walter Roberson]

Do you want to pick the first 100 x 700 entries, throwing away the information in the remaining rows and columns?

Or do you want to interpolate the data down, such as doing an imresize() operation on it?

Answer 1

[Walter Roberson]

newA = cellfun(@(C) cellfun(@(M) imresize(M, 100, 700), C, 'uniform', 0), A, 'uniform', 0);

[Katherine Zheng]

emmm that looks neat. But I get error saying 'Invalid input syntax; input argument # 3 is unrecognized'. Do I need to input C and M?

What function should I use if I just want the first 100x700 and leave out the rest?

Many thanks.

[Walter Roberson]

A = {{zeros(128, 800);; zeros(128,800)}, {ones(150, 900); ones(150, 900)}};

newA = cellfun(@(C) cellfun(@(M) imresize(M, [100, 700]), C, 'uniform', 0), A, 'uniform', 0);

newA{1}

ans = 2×1 cell array
    {100×700 double}
    {100×700 double}

[Katherine Zheng]

Hi @Walter Roberson, Thanks very much. That works like a charm. Can I ask an additional qustion? Is there any way to ultilise cellfun if I want to modify how many rows to be extracted in each cell column? For example, for first column A{:,1}, I want the matrix size to be 100x700. For second column A{:,2}, I want the matrix size to be 200x700. I have an array to store the size I want in B. Is this possible?