Avoide imaginary part in cell matrix

Hi all

i have a cell matrix A like that:

val(:,:,1,1,1) =

Columns 1 through 10

{n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double}

Columns 11 through 20

{n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double} {n×2 double}........

i want to obtain another cell matrix with the same global dimension of the previous one but with only the first column values: so i want to obtain a matrix where each cell has dimension equal to {nx1} . I also want to estrapolate from A only those cells that contain elements with imaginary part less than 0.1 setting to zero all the cells that don't satisfy this condition. Is there an easy way for doing that?

Thank you for the help

Regards

Answer 1

[Ameer Hamza]

Here is the solution to the first part

A; % 1x20 cell array
A_new = cellfun(@(x) {x(:,1)}, A);

All cell in A_new will contain first column of matrices in A.

I didn't understand the 2nd question related to setting the imaginary part to zero.

[EldaEbrithil]

Thank you very much Ameer!!

The 2nd question refers to the filtering of those columns that contain elements with an imaginary part less than 0.1: i want only those columns, the other columns must be set equal to zero

[Ameer Hamza]

The cell array in your question only contains double values? Is the real matrix different than the one you pasted in the question?

[EldaEbrithil]

yes it contains only double values

no it is a 5th dimension matrix, i had only published an exctract of the matrix

[Ameer Hamza]

So, where do the complex values exist? Or does the first column contain the real part, and the 2nd column contains the complex part?

[Ameer Hamza]

If 2nd columns contain the imaginary part, then you can try following command

A_new = cellfun(@(x) {x(:,1).*(x(:,2)<0.1)}, A);

[EldaEbrithil]

The first and the second column contain complex values. I would like to perform the following operations in order:

• stay with one column instead of two
• take those cells (made up of only one column each) that respect that condition on the imaginary part

[Ameer Hamza]

Ok. Following should work in this case

A; % 1x20 cell array
A_new1 = cellfun(@(x) {x(:,1)}, A); % only contain 1st columns
A_new2 = cellfun(@(x) {x.*(imag(x)<0.1)}, A_new1); % set the rows which does not satisfy the imaginary number conditions to 0.