Confusion about code details.

[Estrellama]

Dear Tang, thank you for sharing the code for reproduction!

However, I am confused about the meaning of $K$ and $R$ in the function get_K_R() mentioned in line 93 of demo.py, and what is the purpose of this function. Can you provide some explanations for better understanding?

K, R = get_K_R(90, degree, 0, resolution, resolution).

Thank you for your time and looking forward to your reply. Best regards.