assigning into an array within cell array

Question

say I have got two cell arrays a, b:

for k=1:3
    a{k} = nan(3, k);
end
b = {ones(1, 1), ones(1, 2), ones(1, 3)};

how I assign each cell in b into the second line of each cell of a?

I truly appreciate your effort but it did not work for me. I have upvoted your comment... — Gideon Kogan
– Gideon Kogan, Commented May 10, 2020 at 21:05

Paolo · Accepted Answer · 2020-05-04 12:25:21Z

1

Just have a loop:

for i=1:size(a,2)
    a{i}(2,:) = b{i}
end

If a and b are small, you can use deal:

[a{1}(2,:) a{2}(2,:) a{3}(2,:)] = deal(b{:});

edited May 4, 2020 at 12:25

answered May 4, 2020 at 11:59

Paolo

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6 Comments

Gideon Kogan Over a year ago

this is answering my question but considering that I am asking a minimal question, would it solve a case where k=1:50?

Paolo Over a year ago

Although I honestly think you should just do a simple loop

Gideon Kogan Over a year ago

I dont feel good with the eval solution but you are probably right about the loop solution.

Paolo Over a year ago

I just wanted to show that that is one option. I personally don't see an alternative to this or the loop. I don't think you are going to find a different "magic" oneliner. Assigning stuff to comma separated outputs in this scenario is tricky.

Adriaan Over a year ago

I'd be very cautious with suggesting eval, especially without any warnings. See this answer of mine and references therein on why it's best to avoid it whenever possible. Gist is: hard to debug errors and slow execution due to disabling of the JIT.

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