plotw.m

模式识别工具箱,希望对大家有用!

function h = plotw(w,nrc)
% h = plotw(w,nrc)
%
% Plot the real value output of classifier w...
% ...not completely supported...

% Copyright: D. Tax, R.P.W. Duin, [e-mail]
% Faculty of Applied Physics, Delft University of Technology
% P.O. Box 5046, 2600 GA Delft, The Netherlands

if nargin<2
  nrc = 10;
end

% first determine the grid:
V = axis;
[grid,x,y] = makegriddat(V(1),V(2),V(3),V(4));
% determine the size
lx = length(x);
ly = length(y);

% make the output
z = w*grid;

% see if z has the right size
if (size(z,2)>2)
  error('Data z does not have appropriate size');
end
if (size(z,2)==2)
  z = z(:,1) - z(:,2);
  [c,h] = contourf(x,y,reshape(+z,ly,lx),nrc);
  hold on;
  [c2,h2] = contour(x,y,reshape(+z,ly,lx),[0 0]);
  set(h2,'linewidth',2,'edgecolor','w');
else
  hold on;
  [c,h] = contourf(x,y,reshape(+z,ly,lx),nrc);
end


return