Get Two Cell Arrays To Same Size

Hello friends,

I have two cell arrays which I intend to eventually subtract from one another.

However, I have discovered they are of the same size but not same length (both attached). The cell arrays are both of size 181x1 with nested values of 44x95(double) except for the last two in the other file ('typevector_filtered').

I want to pad the empty values (in 'typevector_filtered') with zeros (0s) so that this cell array is the exact same size as the other one ('velocity_magnitude').

Any help kindly?

My attempts using this code (below) do not yield the same size (see image attached, last two rows end up being 95x1 double instead of 44x95double):

M = max(cellfun(@length, typevector_filtered));
>> Wanted = cellfun(@(x) [x; zeros(M - numel(x), 1)], typevector_filtered, 'un', 0);

Thank you.

Answer 1

[KSSV]

load typevector_filtered.mat

S = size(typevector_filtered{1}) ; 
for i = 1:length(typevector_filtered)
    if ~isequal(size(typevector_filtered{i}),S)
        typevector_filtered{i} = zeros(S) ;
    end
end

Or, using Cellfun (which also uses loop inside)

load typevector_filtered.mat

S = size(typevector_filtered{1}) ; 
P = cell2mat(cellfun(@size,typevector_filtered,'UniformOutput',false)) ;
[c,ia] = ismember(P,S,'rows') ;
idx = find(c==0) ;
typevector_filtered(idx) = {zeros(S)} ;

[Maskus Kit]

Just perfect, thank you ever so much! That works.

Quick one (this was in the first part of my question so I don't think it deserves a totally new question, and might also be something rather 'easy'). How do I go about subtracting these two cell arrays? (typevector_filtered - velocity_magnitude)? Thank you so so much :)

[KSSV]

Run a loop and subtract; save the result in another cell.

[Maskus Kit]

To be completeley honest I have no idea on how to go about that, do you mind just giving me a hypothetical code or should I just write that out as a different question?

Thanks very much.

[KSSV]

N = length(typevector_filtered) ;
iwant = cell(N,1) ; 
for i = 1:N
    iwant{i} = typevector_filtered{i} - velocity_magnitude{i} ; 
end

[Maskus Kit]

Just perfect, you're a life saver! If I could get you a covid jab right now I would immedaitely, haha.

Thanks so much!