Husam Aldahiyat

Diego, thank you for the feedback, but why didn't you rate the file accordingly? :-)

You're right about multiple line inputs, I already did it for the more important ones (FOR, WHILE, IF, BREAK, etc...) but from a programming point of view, doing it for multiple lines distinguished by "..." is pretty simple. I guess this is a reason for an update soon.

Glad the file helped, come again!

You need to check the numbers in the axes limit boxes on the lower left corner of the GUI. Look at the example picture and try to follow it.

If you're still having trouble send me an e-mail.

I had try the example and its works. However i was facing a problem when applied it in my own program which it come out ''??? Index exceeds matrix dimensions.'' It happen when i use goto(137) in line 335. But it works when i use goto(314) in line 294(another part in same program). Will this mean the goto function not suitable to use for big gap?

It's useful, but it can only plot arcs < 180°, in other words span=[a,b] gives the same arc as span=[b,a]. If you don't want that, add e.g.
if span(2)<span(1)
span(2) = span(2) + 2*pi;
end
before theta = ...