how to draw a regular polygon with polarplot command?

how to draw a regular polygon with polarplot command?

i'll use input command for n and R.

(n is the number of vertices, R is the distance between the vertex and the center)

conditions are

1. center is 0,0
2. the distance between vertex and center is R.

[Fifteen12]

What have you tried so far? Are you stuck on the math for converting a regular polygon to polar form? Or on using polarplot specifically?

[Hakyoon Kim]

@John Morris

sorry i forgot the code

prompt_n=('Input n what you want(n>=3): ');
prompt_R=('Input R what you want(R>0): ');
na=input(prompt_n);
R=input(prompt_R);
n=round(na);

theta = 0:pi/90:2*pi;
pgon = nsidedpoly(n,'Center',[0,0]);

if n>3
plot(pgon)
hold on
polarplot(theta,R)


else
    disp('끝냅시닷:p');
end

[Hakyoon Kim]

@John Morris

After drawing the polygon, I tried to write holdon on the polar coordinates, but it didn't work

Answer 1

[KSSV]

Convert polar coordinates to cartesian and then plot.

prompt_n=('Input n what you want(n>=3): ');
prompt_R=('Input R what you want(R>0): ');
na=input(prompt_n);
R=input(prompt_R);
n=round(na);

theta = 0:pi/90:2*pi;
pgon = nsidedpoly(n,'Center',[0,0]);

x = R*cos(theta) ; 
y = R*sin(theta) ; 
if n>3
    plot(pgon)
    hold on
    plot(x,y)        
else
    disp('끝냅시닷:p');
end