Getting Coordinate input from user

I want to get several point 2d coordinates from the user and store the x and y coordinates in separate arrays. I'm using a for loop to do it but it doesn't assign the input to the variables, here's how I'm doing it:

for i=1:5
   [x(i),y(i)]=input('Coordinates of Node')
end

[Jan]

 it doesn't assign the input to the variables

Please do not explain, what the code does not do, but mention, what the code does do. An exact description contains a hint of the way to solve the problem usually.

[Morteza Ghafoori]

it just gives an error of too many output arguments

[Jan]

Please post a complete copy of the message in the forum. You see, that the message explains the problem already.

Answer 1

[Jan]

According to the documentation, |input< has 1 output only:

help input
doc input

Then:

x = zeros(1, 5);  % Pre-allocation
y = zeros(1, 5);  
for i = 1:5
  reply = input('Coordinates of Node')
  x(i)  = reply(1);
  y(i)  = reply(2);
end

The pre-allocation is not essential here, because waiting for the user input will take much more time than expanding the arrays x and y. But it is a good programming practice.

[Morteza Ghafoori]

this actually works but then the user has to input each coordinate in a separate line. I want the user to input 2 numbers at once but assign each to a separate variable, Is this doable?

[Jan]

In a separate line? What did you try to get this impression? Maybe you want this:

for i = 1:5
  reply = input(sprintf('Coordinates of Node %d: ', i), 's');
  num   = sscanf(reply, '%g %g');
  x(i)  = num(1);
  y(i)  = num(2);
end

[Morteza Ghafoori]

Yes, That's exactly what I wanted. Thanks a lot