does a cell vector contains only NaN?

 Dear all,

I have

A={

 [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]
    [NaN]}

and I want to find a command that will tell me if A contains only NaN.

I tried

 all(isnan(cell2mat(A))), 2)  == NaN

but it does not work

cheers

Answer 1

[Sean de Wolski]

cisnan = @(C)all(cellfun(@(x)all(isnan(x(:))),C));
cisnan(your_cell)

Answer 2

[Wayne King]

There are many ways:

     nanarray = cell2mat(cellfun(@isnan,A,'uni',0));
     length(nanarray>0)
     % the above gives you the answer -- for example
     if (length(nanarray>0) > 0)
     disp('The cell array contains NaNs')
     end