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how to assign value to a specific position in cell

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SM
SM on 13 Jul 2020
Commented: Walter Roberson on 17 Jul 2020
A={[10,11,10,7],[7,8,7,6],[11,10,9,9],[7,5,11,5];[9,8,6,11],[10,6,9,7],[6,12,8,9],[7,10,12,9];[10,7,12,6],[8,11,7,5],[8,5,9,9],[10,10,10,10]};
B= [1,1,0,1;0,1,1,1;1,0,1,1;0,1,1,0];
[a,b]=find(~B);
for i=1:numel(a)
A{a(i),b(i)}=[100 100 100 100];
end
Is there any other ways instead of using for loop?

Accepted Answer

Walter Roberson
Walter Roberson on 13 Jul 2020
if size(B,1) > size(A,1)
A(size(B,1),1) = {}; %extend A if needed
end
if size(B,2) > size(A,2)
A(1,size(B,2)) = {}; %extend A if needed
end
A(~B) = {[100 100 100 100]}; %replaces the find and the loop
  2 Comments
Walter Roberson
Walter Roberson on 17 Jul 2020
You might be able to hide loops behind some cellfun() or arrayfun(), and abusing subsasgn() to do assignments using function call syntax...but otherwise, NO.

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