change only some cell values to a value of 1

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I want to change all the zeros in my cell to a value of 1. I know this could be done with a for and if statement, but is there anything that is faster?
Here is my data
[0,241,638,168]
[204,181,382,287;56,0,185,244]
[0,59,574,506]
[8,58,231,546]
[28,68,375,247]
[115,82,524,510]
Want it to look like this
[1,241,638,168]
[204,181,382,287;56,1,185,244]
[1,59,574,506]
[8,58,231,546]
[28,68,375,247]
[115,82,524,510]
Would it be some sort of cellfun() function?
  2 Comments
Conner Carriere
Conner Carriere on 12 Nov 2022
{cat(1, a{1,1:4})} works alright once i convert it to a matrix, but then I would have to do a big for loop afterwards for each row. In the end I need a 4x1 cell with [x x x x]

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Accepted Answer

Voss
Voss on 12 Nov 2022
Yes, you can use cellfun with a helper function:
C = {
[0,241,638,168]
[204,181,382,287;56,0,185,244]
[0,59,574,506]
[8,58,231,546]
[28,68,375,247]
[115,82,524,510]
};
C_new = cellfun(@zeros2ones,C,'UniformOutput',false)
C_new = 6×1 cell array
{[ 1 241 638 168]} {2×4 double } {[ 1 59 574 506]} {[ 8 58 231 546]} {[ 28 68 375 247]} {[115 82 524 510]}
function A = zeros2ones(A)
A(A == 0) = 1;
end

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