I'm trying to make a matrix of user chosen values and a user chosen size.

I am trying to create a code that asks the user for input about a matrix that they want to create. I am asking the user for the starting row value, ending row value, starting column value and ending column value. I am thinking that with that data a matrix of [NxN] size can be created but I just keep getting a single row and changing columns. I also added if loops to prevent a negative value from being used.

if true
b = 1;
while b == 1
userVecRowMin = input('Please input starting row index >> ');
if userVecRowMin <= 0
  disp('Did you mean to input another value? Please input another value.');
else
  b = 2;
end
end
while b == 2
userVecColMin = input('Please input starting column index >> ');
if userVecColMin <= 0
  disp('Did you mean to input another value? Please input another value.');
else
  b = 3;
end
end
while b == 3
userVecRowMax = input('Please input ending row index >> ');
if userVecRowMax <= 0
  disp('Did you mean to input another value? Please input another value.');
else
  b = 4;
end
end
while b == 4
userVecColMax = input('Please input ending column index >> ');
if userVecColMax <= 0
  disp('Did you mean to input another value? Please input another value.');
else
  b = 5;
end
end
a = 1;
while(a == 1)
userIncrem = input('Please input desired incrementation >> ');
if userIncrem <= 0
  disp('Did you mean to input another value? Please input another value.');
else
  a = 2;
end
userVec = [userVecRowMin:userVecRowMax,userVecColMin:userVecColMax];
disp(userVec);
end
end

[KSSV]

I think you are making code complicated.....you may staright away ask for dimensions....and then proceed.

[Stephen23]

@Rasean Hyligar: this is a waste of time. Simpler would be to use:

• a function with a user-defined input.
• a text file and read it into memory.
• a uitable

You will spend hours on this, when a uitable will do it straight away.