Getting "Error: This statement is incomplete."

Hello. This is my code and I keep getting the error "This statement is incomplete." several times throughout but can't find the mistake.

6

figure (6);
v1 = [1 0 -5 0 0 4];

k=1;

for i=[-3 : 0.2 : 3]
    p1 (k) = polyval(v1,i);
    k = k+1;

j=1;

for i=[-3 : 0.2 : 3]
    if i >= 0
        v2 (j) = i^3;
        j = j+1;
    else if i < 0
            v2 (j) = i^3 * (-1);
            j = j+1;
        end
    end
end

plot (p1); grid on; hold on;
plot (v2);

Here's the errors:

[KSSV]

The given code works fine.......is there any code before figure(6)?

[The Canary Cry]

Yes, but I've also tried copying it into its own .m file in which case I only get the last two errors.

[KSSV]

Error could be the previous lines...the given lines work fine.

[The Canary Cry]

It gives me the same errors when it's just these lines as well

Answer 1

[Walter Roberson]

There is no end for the first for loop. You start a second for i without an end for the first.

[The Canary Cry]

Oh, thank you! That solved it.

Answer 2

[Birdman]

You seem to be missing end of the first for loop. Use this simplified code:

figure;
v1 = [1 0 -5 0 0 4];
i=-3:0.2:3;
p1 = polyval(v1,i);
v2=zeros(1,numel(i));
v2(i>=0) = i(i>=0).^3;
v2(i<0) = i(i<0).^3 *(-1);
plot (p1); grid on; hold on;
plot (v2);