How to get the circle to draw a rectangle rather than a line?

[altenbach]

It shows how to generate a circle and any regular polygon. It also shows how to grap more than one dataset at the same time.

(Throw awaysmost of your other code. It is way to convoluted.)

[recneps]

ok thanks alot ill have a go at implementing what you have said and have a mess around with it 🙂

im not sure if it was you i was talking to the other day but i was trying to simplify the attatchment below so that it just allows me to click on the graph to make a coordinate as many times as i want then connect the points up. if it was you do you know/could you simplify down the code for me if you have the time?

also someone suggested the 2nd attchment code but i had trouble making it as there image had the wirting in a different language 

thanks again