beamlet3dfig12.m

beamlet变化的工具箱

function Beamlet3Dfig12(OpenNewWindow,HaveTitle,LoadData)
%Auxillary function: dividing_planes

LoadData=0;
if nargin<2
    HaveTitle=1;
end
if nargin<1
    OpenNewWindow=1;
end
if OpenNewWindow
    figure
end

% MakeMOGrid -- Show Sector Conversion Problem
	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],'w');
axis([-4 4 -4 4]); 
axis('equal');
hold on;
plot([-pi pi],[pi pi],'w');
plot([-pi -pi],[-pi pi],'w');
plot([pi pi],[-pi pi],'w');

for s=1:2, 
	if s==2, 
		for l=1:n,   % radial lines
			plot(squeeze(xi(1,s,[1 (m+1)],l)), squeeze(xi(2,s,[1 (m+1)],l)),'-k'); 
		end ;
%	else			% horizontal lines
		for k=1:(m+1), 
			plot([xi(1,s,k,1), xi(1,s,k,1)],...
				 [xi(2,s,k,1), (-xi(2,s,k,1))],'-k'); 
		end
	end 
end
for s=1:2, 
	if s==1, 
		for l=1:n, 
			plot(squeeze(xi(1,s,[1 (m+1)],l)), squeeze(xi(2,s,[1 (m+1)],l)),'-k'); 
		end 
%	else
		for k=1:(m+1), 
			plot(squeeze([xi(1,s,k,1), -xi(1,s,k,1)]),...
				 squeeze([xi(2,s,k,1), (xi(2,s,k,1))]),'-k'); 
		end
	end 
end

hold off;
axis off;
drawnow; figure(gcf);

if HaveTitle
   title('The PseudoPolar Grid for n=8');
end

%
% 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]
%