# How to draw a sidebar in polar plotting?

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How can I draw a sidebar (red encircled) with a polar plot as shown in figure.
My program and figure are given below:
clc;
clear all;
close all;
%% ------------------------------Program-------------------------------------
N0=100;
r_med=[0.445 0.889 1.445 8];
sigma_g=7;
N_ang=91;
theta =0:(pi/180): (2*pi);
Num_r = 50e3;
r = linspace(1,50,Num_r)./2;
col=['k' 'b' 'r' 'g'];
for i=1:length(r_med)
[s1(i,:),s2(i,:),~,~,~,~]=bhmie(r_med(i),1.33,91)
cs1(i,:)=conj(s1(i,:));
cs2(i,:)=conj(s2(i,:));
ph_ft(i,:)=s1(i,:).*cs1(i,:)+s2(i,:).*cs2(i,:);
Rs1(i,:)=real(s1(i,:));
Rs2(i,:)=real(s2(i,:));
phf(i,:)=[ph_ft(i,:) fliplr(ph_ft(i,2:181))];
polarplot(theta,phf(i,:));
end
%% -------------------------------Title--------------------------------------
figure('name','Polar plot of scattering phase')
subplot(2,2,1,polaraxes);
hold on
polarplot(theta,phf(1,:),'color',col(1),'Linewidth',1.5);
title('\bf (a) Scattering phase function','FontSize',...
16,'FontWeight','normal')%\bf(bold font),\rm(normal font),\it(italian font)
legend('R_{e}=4\mum','location','south','FontSize',12);
legend boxoff
set(gca,'color','w','Fontsize',12,'LineWidth',1,'Fontweight','normal');
set(gca,'box','on','Fontname','Arial','Fontsmoothing','on');
%%
subplot(2,2,2,polaraxes);
hold on
polarplot(theta,phf(2,:),'color',col(2),'Linewidth',1.5);
title('\bf (b) Scattering phase function','FontSize',...
16,'FontWeight','normal')%\bf(bold font),\rm(normal font),\it(italian font)
legend('R_{e}=8\mum','location','south','FontSize',12);
legend boxoff
set(gca,'color','w','Fontsize',12,'LineWidth',1,'Fontweight','normal');
set(gca,'box','on','Fontname','Arial','Fontsmoothing','on');
%%
subplot(2,2,3,polaraxes);
hold on
polarplot(theta,phf(3,:),'color',col(3),'Linewidth',1.5);
title('\bf (c) Scattering phase function','FontSize',...
16,'FontWeight','normal')%\bf(bold font),\rm(normal font),\it(italian font)
legend('R_{e}=13\mum','location','south','FontSize',12);
legend boxoff
set(gca,'color','w','Fontsize',12,'LineWidth',1,'Fontweight','normal');
set(gca,'box','on','Fontname','Arial','Fontsmoothing','on');
%%
subplot(2,2,4,polaraxes);
hold on
polarplot(theta,phf(4,:),'color',col(4),'Linewidth',1.5);
title('\bf (d) Scattering phase function','FontSize',...
16,'FontWeight','normal')%\bf(bold font),\rm(normal font),\it(italian font)
legend('R_{e}=72\mum','location','south','FontSize',12);
legend boxoff
set(gca,'color','w','Fontsize',12,'LineWidth',1,'Fontweight','normal');
set(gca,'box','on','Fontname','Arial','Fontsmoothing','on');
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[.3 .05 .45 .75])
print(gcf,'Polar plot of scattering phase.tiff','-dtiff','-r300');
##### 2 个评论显示隐藏 1更早的评论
the polar plot reprsents the distribution of light while the vertical bar represents the scattering intesity in units of steradian

### 采纳的回答

Chunru 2021-12-24
theta =0:(pi/180): (2*pi);
r = cos(theta)
r = 1×361
1.0000 0.9998 0.9994 0.9986 0.9976 0.9962 0.9945 0.9925 0.9903 0.9877 0.9848 0.9816 0.9781 0.9744 0.9703 0.9659 0.9613 0.9563 0.9511 0.9455 0.9397 0.9336 0.9272 0.9205 0.9135 0.9063 0.8988 0.8910 0.8829 0.8746
ax=subplot(221);
polar(theta, r);
pos = ax.Position
pos = 1×4
0.1300 0.5838 0.3347 0.3412
ax1 = axes('Position', pos, 'Color', 'none');
ax1.XAxis.Visible = 'off'; % turn off x axis
ax1.YLim = [-2 2];
ax1.YLabel.String = "Phase Function sr^1";
ax1.YMinorTick = 'on';
ax1.TickDir = 'out';
##### 1 个评论显示隐藏 无
Thank you so much.

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