Filling in the area between the two plots

I'm trying to fill in the area between, R1 & X1, R2 and X2. How do you fill in that space, or connect the points from R1 to R2 and X1 to X2.

deg=pi/180;

r1 = 6;

r2 = 1/6;

Rc=0;

Xc=0;

theta=-98*deg:pi/100:98*deg;

R1=r1*cos(theta)+Rc;

X1=r1*sin(theta)+Xc;

R2=r2*cos(theta)+Rc;

X2=r2*sin(theta)+Xc;

plot(R1,X1,'-b'),grid % normal MHO circle

hold on

plot(R2,X2,'-b')

%plot([0 2*Rc],[0 2*Xc],'-r','LineWidth',2)

plot(alphara,alphaia, 'r')% diameter

Answer 1

[Star Strider]

Try this —

deg=pi/180;
r1 = 6;
r2 = 1/6;
Rc=0;
Xc=0;
theta=-98*deg:pi/100:98*deg;
R1=r1*cos(theta)+Rc;
X1=r1*sin(theta)+Xc;
R2=r2*cos(theta)+Rc;
X2=r2*sin(theta)+Xc;

figure
plot(R1,X1,'-b'),grid % normal MHO circle
hold on
plot(R2,X2,'-b')
patch([R1 fliplr(R2)], [X1 fliplr(X2)], 'g', 'FaceAlpha',0.5, 'EdgeColor','none')
axis('equal')

%plot([0 2*Rc],[0 2*Xc],'-r','LineWidth',2)
plot(alphara,alphaia, 'r')% diameter                            <— MISSING ARGUMENT VECTORS!!!

Unrecognized function or variable 'alphara'.

hold off

.