Test for within cell array boundaries

Is there a test for whether or not a cell is within a cell array's boundaries?

For example, myarray = cell(8);

inbounds(myarray{8,8})

1

inbounds(myarray{9,9})

0

Is there an actual function equivalent to my inbounds?

Answer 1

[Andrei Bobrov]

inbounds = @(myarray,indexes)all(size(myarray) >= indexes(:)');

use:

>> inbounds = @(myarray,indexes)all(size(myarray) >= indexes(:)');

myarray = randi(125,10,8);
out = inbounds(myarray,[2 6])
out =
  logical
   1
>>

Answer 2

[Jan]

myarray = cell(8);
search  = [9, 9];
if all(search <= size(myarray))
  ... existing

You can create such a function easily:

function ok = inbounds(X, Index)
if numel(Index) == ndims(X)
  ok = all(Index > 0) && all(Index == round(Index)) && all(Index <= size(X));
elseif numel(Index) == 1
  ok = (Index <= numel(X));
else
  ok = false;
end

You could or should expand this to consider the convention that trailing singelton dimensins are ignored in Matlab:

X = rand(2,3);
X(2,2,1,1,1,1,1)   % Ok!

An explicite test inside the code might be smarter than such a general method.