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I want to fill color in the circle

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Shreen El-Sapa
Shreen El-Sapa 2022-2-4
评论： Shreen El-Sapa 2022-2-4
Zeta1=10;Zeta2=0.1;
%k=0.000001;U=1;
%k=1;U=1;
%k=3;U=1;
k=4;U=1;
alpha1=real(sqrt(Zeta1.^2./2+Zeta1.*sqrt(Zeta1.^2-4.*k.^2)./2));
alpha2=real(sqrt(Zeta1.^2./2-Zeta1.*sqrt(Zeta1.^2-4.*k.^2)./2));
a = 1 ; %RADIUS
L=.4;
c =-a/L;
b =a/L;
m =a*200; % NUMBER OF INTERVALS
[x,y]=meshgrid([c:(b-c)/m:b],[c:(b-c)/m:b]');
[I J]=find(sqrt(x.^2+y.^2)<(a-.1));
if ~isempty(I);
x(I,J) = 0;
y(I,J) = 0;
end
r=sqrt(x.^2+y.^2);
t=atan2(y,x);
warning on
AA = -(a .^ 3 .* alpha1 .^ 2 .* alpha2 .^ 2 + 3 .* a .^ 2 .* alpha1 .^ 2 .* alpha2 + 3 .* a .^ 2 .* alpha1 .* alpha2 .^ 2 + 3 .* a .* alpha1 .^ 2 + 6 .* a .* alpha1 .* alpha2 + 3 .* a .* alpha2 .^ 2 + 3 .* alpha1 + 3 .* alpha2) .* U ./ alpha2 .^ 2 ./ alpha1 .^ 2;
BB = -0.3e1 .* exp(a .* alpha1) .* sqrt(a .* alpha1) .* (a .* alpha2 + 0.1e1) .* sqrt(0.2e1) .* U ./ alpha1 .* pi .^ (-0.1e1 ./ 0.2e1) .* a .^ (-0.1e1 ./ 0.2e1) ./ (alpha1 - alpha2);
CC = 0.3e1 .* sqrt(0.2e1) .* exp(a .* alpha2) .* (a .* alpha1 + 0.1e1) .* sqrt(a .* alpha2) .* U .* pi .^ (-0.1e1 ./ 0.2e1) .* a .^ (-0.1e1 ./ 0.2e1) ./ alpha2 ./ (alpha1 - alpha2);psi=(BB .* sqrt(0.2e1) .* sqrt(pi) .* exp(-alpha1 .* r) .* sqrt(alpha2 .* r) .* alpha1 .* alpha2 .* r .^ 2 + CC .* sqrt(0.2e1) .* sqrt(pi) .* sqrt(alpha1 .* r) .* exp(-alpha2 .* r) .* alpha1 .* alpha2 .* r .^ 2 + BB .* sqrt(0.2e1) .* sqrt(pi) .* exp(-alpha1 .* r) .* r .* alpha2 .* sqrt(alpha2 .* r) + CC .* sqrt(0.2e1) .* sqrt(pi) .* exp(-alpha2 .* r) .* r .* alpha1 .* sqrt(alpha1 .* r) + 0.2e1 .* AA .* sqrt(r) .* alpha1 .* sqrt(alpha1 .* r) .* alpha2 .* sqrt(alpha2 .* r)) .* r .^ (-0.3e1 ./ 0.2e1) ./ alpha1 .* (alpha1 .* r) .^ (-0.1e1 ./ 0.2e1) ./ alpha2 .* (alpha2 .* r) .^ (-0.1e1 ./ 0.2e1) .* sin(t) .^ 2 ./ 0.4e1;
p1=contour(x,y,psi,[-0.1 -0.1],'k','LineWidth',1.1,'ShowText','on'); %,'ShowText','on'
hold on
p2=contour(x,y,psi,[-0.2 -0.2],'--k','LineWidth',1.1,'ShowText','on');
hold on
p3=contour(x,y,psi,[-0.3 -0.3],'r','LineWidth',1.1,'ShowText','on');
hold on
p4=contour(x,y,psi,[-0.4 -0.4],'--r','LineWidth',1.1,'ShowText','on');
hold on
p5=contour(x,y,psi,[-0.5 -0.5],'m','LineWidth',1.1,'ShowText','on');
hold on
p6=contour(x,y,psi,[-.8 -.8],'--m','LineWidth',1.1,'ShowText','on');
hold on
p7=contour(x,y,psi,[-1 -1],'b','LineWidth',1.1,'ShowText','on');
hold on
p8=contour(x,y,psi,[-1.2 -1.2],'--b','LineWidth',1.1,'ShowText','on');
hold on
p9=contour(x,y,psi,[-1.3 -1.3],'g','LineWidth',1.1,'ShowText','on');
hold on
p10=contour(x,y,psi,[-1.5 -1.5],'--g','LineWidth',1.1,'ShowText','on');
hold on
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
m1=100;
r1=ones(1,m1+1)*a;
th=[0:2*pi/m1:2*pi];
set(polar(th,r1,'-k'),'LineWidth',1.1);
%title('$\kappa=0.0$','Interpreter','latex','FontSize',12,'FontName','Times New Roman','FontWeight','Normal')
%title('$\kappa=1.0$','Interpreter','latex','FontSize',12,'FontName','Times New Roman','FontWeight','Normal')
%title('$\kappa=3.0$','Interpreter','latex','FontSize',12,'FontName','Times New Roman','FontWeight','Normal')
title('$\kappa=4.0$','Interpreter','latex','FontSize',12,'FontName','Times New Roman','FontWeight','Normal')
axis equal %square
axis off
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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采纳的回答

Simon Chan
Simon Chan 2022-2-4
Add these 2 lines after your polar command:
set(polar(th,r1,'-k'),'LineWidth',1.1);
[xx,yy]=pol2cart(th,r1);
fill(xx,yy,'r')
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