find a vector in a cell array

AP = {[1,2,14];[1,5,14]}
P = {[1,5,14]};

i wanted to check if P is in AP

i did as

IsInAp = find(cellfun(@(x) ismember(path,x,'rows'),allpaths));

but showing error as

Warning: The 'rows' input is not supported for cell array inputs. 
> In cellismemberlegacy (line 47)
  In cell/ismember (line 91)
  In Untitled>@(x)ismember(path,x,'rows')
  In Untitled (line 40) 
Error using cell/ismember (line 34)
Input A of class cell and input B of class double must be cell arrays of character vectors,
unless one is a character vector.

Error in cellismemberlegacy (line 53)
        [lia,locb] = ismember(a,b);

Error in cell/ismember (line 91)
        lia = cellismemberlegacy(a,b,flag1);

Error in Untitled>@(x)ismember(path,x,'rows')

Error in Untitled (line 40)
    IsInAp = find(cellfun(@(x) ismember(P,x,'rows'),AP));

Answer 1

[Walter Roberson]

any(cellfun(@isequal,AP(:),repmat(P,length(AP),1)))

This does not require that the elements of AP be the same length or that P and AP contain row vectors (but does require they be the same orientation.)

You could also use

ismember(P{1}, cell2mat(AP(:)), 'rows')

which does assume that elements of AP are the same length and that P and AP contain row vectors.

[Walter Roberson]

If you need to know the position then in the first version you can change the any() to find()

In the second version, you can add a second output,

[IsInAp, idx] = ismember(P{1}, cell2mat(AP(:)), 'rows');