Indexing errors on sum

In = [38.68 7.84 5.14 3.92 3.14 2.62 2.22 1.78 1.74 1.55];
X = [1.4875   -0.4216    0.0390   -0.0008]
for c = 1:length(In)
    Yf = @(In)sum(X(1:end).*In(c).^(0:Order));
    Y(c) = Yf(c)
end
plot(In,Y)

This gives me the error Index exceeds the number of array elements (1).

the code is supposed to take the length of X(a list of coeficients) and plots the function

Y = X(1)*In.^(0) + X(2)*In.^(1) + X(3)*In.^(2) + X(4)*In.^(3)

So if the length of X is 5, then the function should be

Y = X(1)*In.^(0) + X(2)*In.^(1) + X(3)*In.^(2) + X(4)*In.^(3) + X(5)*In.^(4)

Am I doing this wrong? Is it possible to have matlab build the function itself like this?

Answer 1

[Steven Lord]

I'm guessing you've defined a variable named sum that's preventing you from calling the sum function. If my guess is correct clear the variable and recreate the anonymous functions.