I have a function func(x) which signature is
[v] = func(x)
where v is a function. I wanted to do the following, after reading this post
x= [1:10];
for i=1:length(x)
v{i} = func(x(i));
end
and I got this error:
Cell contents assignment to a non-cell array object.
What is it that I'm doing wrong?
Seems v is already a vector, you have to initialise a cell:
v={}
or delete the vector:
clear v
Alternatively you can initialize a cell of the right size, which is faster because it allocates the memory at once:
v=cell(length(x),1);
v is a vector is irrelevant, I tried this also with "free" names and the result was the same.
v being is vector is very relevant. You cannot perform cell operations on a vector. Even though MATLAB for the most part is type agnostic, cells and vectors are one of the few instances where you need to make sure that you apply the right syntax to the right kind of variable. What @Daniel said is correct. What I would suggest you do is initialize v to an empty cell array as suggested, then iterate through your loop. It would also help if you placed more code, as the error generated may be related to what is happening before your loop.u{i} = func(x(j)) and it still returned the same error, after the second iteration. I expected that in the first iteration I'd get that u{1} would be my first vector, u{2} the second etc. In that case it is clear from the first iteration thatu is a cellaray rather then a vector, no?
func which allows us to reproduce the problem. I assumed the v{i} = func(x(i)); assignment causes the problem, but there might be another assignment which is not visible in your question.v was used somewhere else and couldn't be implicitly re-assigned. Thank, and sorry for the trouble :)