comparison mt_get_transmat_at.m @ 4:931e71c24aa3

Old mt_get_transmat_at is now mt_get_transmat_near;
new mt_get_transmat_at gets nearest transmat deterministically.

-% mt_get_transmat_at - Get transition matrix near given point in information space.
+% mt_get_transmat_at - Get transition matrix nearest given point in information space.
 %
 % mt_get_transmat_at ::
 %    mt_system ~'Melody Triangle system structure',
 %    natural   ~'voice Id (1 or greater)',
 %    K:natural ~'size of transition matrix',

 %    real      ~'Y-coordinate'
 % -> [[K,K]]   ~'transition matrix',
 %    [[1,3]]   ~'information coordinates'.
 %
 % The selected transition matrix will be shown using mt_show_transmat,
-% and it's information coordinates printed in the title of the main scatter plot.
 
 function [T,P,I]=mt_get_transmat_at(Sys,Id,K,X,Y)
 	logK=log(K);
 	normpos = Sys.map([X;Y])';
 	target = normpos*logK;

 	info = Sys.info{K};
 	L = size(info,1);
 
 	% distance from target
 	d2 = sum((info(:,1:2) - repmat(target,L,1)).^2,2);
-	Mask = d2<=max(min(d2)*2,0.01);
-
-	M = find(Mask);
-%	J = M(argmax(info(M,3)));
-	J = M(1+floor(length(M)*rand));
+	[dummy,J]=min(d2);
 	T = tmats(:,:,J);
 	I = info(J,:);
-	%Mask=2*int16(Mask); Mask(J)=1;
-	%set(Sys.hScat{K},'CDATA',Mask); % scatc(info,Mask,16); rotate3d on;
-	%figure(Sys.fig); title(sprintf('info: %.2f, %.2f, %.2f',I(1),I(2),I(3)));
-	%figure(50); title(sprintf('pos: %.2f, %.2f',normpos(1), normpos(2)));
-	%fprintf('normpos: %.2f, %.2f',normpos(1), normpos(2));
 	mt_show_transmat(Id,T,I);
 	if nargin>1, P=Sys.revmap(I(1:2)'/logK); end
 end