MATLAB: 3 plane to array vectorization

Question

I have data in a matrix Atr

 >> whos Atr
  Name      Size                 Bytes  Class     Attributes
   Atr       7x3x2500            420000  double

I want to extract Atr(1,1,:) into a row vector Q. I tried like this

>>Q=Atr(1,1,:);
>> whos Q
Name      Size                Bytes  Class     Attributes
Q         1x1x2500            20000  double

But I need to store in a signle rwo vector . And also tried in this way

for i=1:2500
    Q(i)=Atr(1,1,i);
end
>> whos Q
  Name      Size                Bytes  Class     Attributes
    Q         1x1x2500            20000  double

But no help. How can I store in a single row vector ?

Answer 1

doc squeeze
Q=squeeze(Atr(1,1,:));