what is wrong with my script?

I am doing assignment and I am getting this Answer when I tried to find circle area and Circumferrence with Circle function. What is wrong with my script? Resolve it pls.

xyz = circle (6)
To use 'circle', the following product must be both licensed and installed:
  RF Toolbox

[Image Analyst]

Why do you say there is anything wrong with it? What are you expecting? Do you have the toolbox it mentions? Type ver to find out. But first, READ this link.

[Purvil Patel]

I wanted to write function called circle who takes radius as input and returns area and circumference as output. But they are showing this. I tried to do in online matlab. It is working properly in online version but they are showing RF toolbox error in installed version sk what should I do??

[Walter Roberson]

After you have created your circle.m use

which -all circle

to be sure that the one you created is the first one on the list. If it shows up second on the list then you need to change your MATLAB path.

Answer 1

[Walter Roberson]

You have called upon RF toolbox circle() which is intended to draw circles on a Smith chart. It is very unlikely that is what you want to do.

What were you expecting circle(6) to do? Did you write your own circle.m ?

Answer 2

[Jan]

"circle" is a reserved name of a function of the RF toolbox. Use another name to avoid this problem.

[Image Analyst]

I agree with Jan (as usual). Call it something more descriptive like GetCircleAreaAndCircum(). You can have virtually unlimited characters, so might as well use them to make your code more readable (this is a crusade of mine).