I dont know how to script this operation.

function s = sumUp(X)

%Simple function in MATLAB.

%   s=sumUp(x) is a function that returns s given s=Sigma(X(i)).

% Caution! X here is a vector: X=[ x1 x2 ... xn].

s = 0;

% ============= YOUR CODE HERE ==============

% Instructions: Return s given s=Sigma(X(i)), X is a vector.

%               Use built-in function length(X) to obtain the length of X.

%               Use for loop to sum up all elements of X.

% ===========================================

end

[Image Analyst]

>> doc for

[James T]

Thank you, for that. One of the examples shown solved it, but I need to clean it up a bit.

Answer 1

[Wonsang You]

Try the following code.

function s = sumUp(X)
   s = 0;
   for s=1:length(X)
      s = s + X(s);
   end
end

[James T]

It doesn't output, the required info. Thank you for the effort, and the script is right. I believe I found the solution.

[Image Analyst]

He should not have had s be both the accumulating variable and the loop index. It should be:

function s = sumUp(X)
   s = 0;
   for k = 1 : length(X)
      s = s + X(k);
   end
end

[James T]

I discovered it was the right script, but a few letters needed to be changed inside the statement after looking at the documents and noticing one of them used a different identifier. I am new to this style of scripting, but it's been fun so far! Thank you!