MATLAB: Won’t matlab recall the array ive just created in a function

Question

Hi,

I've written a function where output P is an array of numbers. Now i want to use P made in the function in another function, ie i want to recall P.

function P = poly_input(y)

% ————————————————————————-

% If no value is entered in the beginning

% ————————————————————————-

   if   (nargin ~= 1)
        disp(' ');
          y = input('Invalid, a single integer value must be entered: ');
            while ~isscalar(y) || y ~= floor(y)
              disp(' ');
              y = input('Invalid, a single integer value must be entered: '); 
            end
    end

% ————————————————————————-

% If a decimal is entered in the beginning

% ————————————————————————-

    if ~isscalar(y) || y ~= floor(y)
          while ~isscalar(y) || y ~= floor(y)
             disp(' ');
             y = input('Invalid, a single integer value must be entered: '); 
          end 
    end

disp(' ');

str1 = 'The polynomial will have order of ';

str2 = num2str(y);

disp([str1 str2 '.']);

% ————————————————————————-

% Inputting the coefficients

% ————————————————————————-

count = 0;

for orders = [0:1:y]

    disp(' ')
    str3 = 'What do you want the coefficient of x^';
    str4 = ' to be; ';
    alltogether = [str3 num2str(orders) str4];
    count = count + 1;
    Z(count) = input(alltogether);

end

P = int2str(Z);

P = str2num(P);

P

However, when i call for P in the command window MATLAB states that no value for P has been entered!?

Thanks

Answer 1

The array was created in the workspace of the function, but when you are at the command line, you are using the "base" workspace. http://www.mathworks.com/help/matlab/matlab_prog/base-and-function-workspaces.html

What you need to do in your case is, at the command line, use

P = poly_input();