dmakessfigure7_2.m

来自「beamlet变化的工具箱」· M 代码 · 共 15 行

function MakeSSFigure7_2(varargin)
% MakeSSFigure7_2.m -- second part of Figure 7 of Slant Stack Paper
% Usage: MAKESSFIGURE7_2 will start a new figure window and plot second part of Figure 7 of Slant Stack Paper.
%        MAKESSFIGURE7_2(n) for any argument type n will plot the figure on the current figure 
%        window and plot second part of Figure 7 of Slant Stack Paper.
if nargin == 0
	 figure;
else
     gcf;
end

% MakeSSFig6 -- Draw Figure showing the definitions of pseudopolar points.
%figure;	
n = 8;
	m = 2*n;
	w = zeros(2,m+1,n);
	xi = zeros(2,2,m+1,n);
%
for s=1:2,
		first = 3-s;
		secnd = s;
		if s==1, sg = 1; else sg= -1; end
		for k=1:(m+1),
			for l=1:n,
				kt = k-1 -n;
				lt = l-1 -n/2;
				if kt==0,
					w(s,k,l) = 1/(2*n);
				elseif abs(kt) < n,
					w(s,k,l) = abs(kt)/n;
				elseif abs(lt) < n/2,
					w(s,k,l) = 1/2;
				else
					w(s,k,l) = 1/4;
				end
				xi(first,s,k,l) = pi*kt/n;
				xi(secnd,s,k,l) = sg*2*pi*lt/n * kt/n;
			end
		end
	end
%
% Display lines indicating plot extent
%
plot([-pi pi],[-pi -pi],'r');
axis([-4 4 -4 4]);
axis('equal');
 hold on;
plot([-pi pi],[pi pi],'r');
plot([-pi -pi],[-pi pi],'b');
plot([pi pi],[-pi pi],'b');
for s=1:2, 
	if s==2, 
		for l=1:n, 
			plot(squeeze(xi(1,s,1:(m+1),l)),squeeze(xi(2,s,1:(m+1),l)),'xb'); 
			plot(squeeze(xi(1,s,[1 (m+1)],l)),squeeze(xi(2,s,[1 (m+1)],l)),':b'); 
		end ;
	else
		for k=1:(m+1), 
% 			plot([xi(1,s,(n+1),m), (-xi(1,s,(n+1),m))],...
% 				 [xi(2,s,(n+1),m), (-xi(2,s,(n+1),m))],'x');
			plot(squeeze([xi(1,s,k,1), (xi(1,s,k,1))]),...
				 [pi, (-pi)],'-r');
		end
	end 
end
hold off;
axis off;
%drawnow; %figure(gcf);
%
% Part of BeamLab Version:200
% Built:Friday,23-Aug-2002 00:00:00
% This is Copyrighted Material
% For Copying permissions see COPYING.m
% Comments? e-mail [e-mail]
%
%
% Part of BeamLab Version:200
% Built:Saturday,14-Sep-2002 00:00:00
% This is Copyrighted Material
% For Copying permissions see COPYING.m
% Comments? e-mail [e-mail]
%