function y=mmpx2n(x,Hf)%MMPX2N Pixel to Normalized Coordinate Transformation.% MMPX2N(X) converts the position vector X from% pixel coordinates to normalized coordinates w.r.t.% the computer screen.%% MMPX2N(X,H) converts the position vector X from% pixel coordinates to normalized coordinates w.r.t.% the figure window having handle H.%% X=[left bottom width height] or X=[width height]% D.C. Hanselman, University of Maine, Orono, ME 04469% 4/10/95% Copyright (c) 1996 by Prentice-Hall, Inc. msg='Input is not a pixel position vector.';lx=length(x);sz='Position';if nargin==1,Hf=0;sz='ScreenSize';endif any(x<1)|(lx~=4&lx~=2)	error(msg)endif lx==2,x=[1 1 x(:)'];end  % [width height] input formatu=get(Hf,'Units');set(Hf,'Units','pixels');s=get(Hf,sz);y=(x-1)./([s(3:4) s(3:4)]-1);set(Hf,'Units',u);if any(y>1)	error(msg)endif lx==2,y=y(3:4);end  % [width height] output format