While all elements are not equal to NaN

I have an array and I turn one element to NaN in each iteration until all elements are NaN, like:

While (all elements in array are not NaN)
 do aomething
End

How can I do this?

Answer 1

[Jos (10584)]

not (~), all, and isnan are your friends. If A is your array,

while ~all(isnan(A(:)))
...
end

[evangeline]

How can I check if I have a cell array?

[Stephen23]

@Evangeline: iscell, whos, or look at the description in the workspace. How is this related to your question?

Answer 2

[evangeline]

I mean how can I check if all array elements are nan, if my array is an cell array.