How to divide column vector elements in unequal parts against a condition?

I have Pressure data against 5 days(for sample)

I want Pressure for all these days in different column according to days in single matrix only?

I want code which does everything, because I have big data.

Thanks

I want all column of pressure for different days inside one matrix or variable say i.e x or y.

Is it possible because length of all pressure data for a day will be different from each other?

File attached

Answer 1

[Stephan]

Due to different lengths of your daily data you should use a cell array:

A = readmatrix('New Text Document.txt');

k_min = min(unique(A(:,1)));
k_max = max(unique(A(:,1)));
x = cell(1,k_max-k_min+1);

for k = k_min:k_max
    x{:,k} = A(A(:,1)==k,2);
end

Access the data of the single days by using:

x{1,2} % to look day 2
x{1,5} % day 5

[Atique Barudgar]

Thank you very much

[Atique Barudgar]

If anybody have another method, please share.