How do I make such a script?

I need to make a basic script that asks the user to input "r" which would be the raidus of the circle and then it basically creates a 2D plot of a circle withn "r" radius.

Answer 1

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/8026-best-way-s-to-master-matlab

See in particular input()

http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F