How do you preallocate variables for coordinates?

I'm trying to use ginput in multiple iterations and save the coordinates into variables...for example.

for k = 1:3

 [x(i),y(i) = ginput(4);

end

So I would click 4 times for the first iteration, and save those data points into the first variable. Then, I would click 4 times for the next two iterations and save those data points in two more variables

Answer 1

[Youssef Khmou]

hi, you can use cells :

 for k=1:3
 A{k}=ginput(4);
 end

you can later transform it to matrix : " cell2mat"