Smith Diagramm in matlab/octave

Hi guys i want to ask something about creating smith-chart in matlab/octave

So i just got this school project and i have to make a smith-chart in matlab or octave programm. I already wrote the program and it runs perfectly. but i got a little problem with the line outside the circle. Has anybody idea about how to throw away the line outside the smith circle. I really appreciate your answer. This one is the photo of my smith-chart. Thankyou very much.

Answer 1

[KALYAN ACHARJYA]

axis off;

Or

Also you can set the axes properties , like set(...)

or

axes('Color','none','XColor','none');

[Kelvin Kelvin]

thankyou very much for your answer, but i mean the line that across the circle. not really the axes. but also thankyou for your answer.

best regards