lpsiggui.m

ADSP TOOLBOX: Version 2.0 and gui m-files

function lpsiggui(mode)
%LPSIGGUI Graphical User Interface program for DT linear-phase signals.


% ADSP Toolbox: Version 2.0 
% For use with "Analog and Digital Signal Processing", 2nd Ed.
% Published by PWS Publishing Co.
%
% Ashok Ambardar, EE Dept. MTU, Houghton, MI 49931, USA
% http://www.ee.mtu/faculty/akambard.html
% e-mail: [e-mail]
% Copyright (c) 1998


v=matverch;
if v<5,
errordlg('This gui requires MATLAB 5.x and above','Version Error');
return,
end


if nargin == 0, mode = 0; end

if mode ~= 0,
   f = gcf;
   ui = get(f,'userdata');
   xn_edt = ui(3);
   mag_axs=ui(26);
   phs_axs=ui(10);
   pz_axs=ui(23);
   sig_axs=ui(7);
   clear_btn = ui(9);
   curs_btn = ui(21);
   curs_dsp = ui(17:20);
end

if mode == 0,
   grey = [0.5,0.5,0.5];
   ltgrey = grey*1.5;
   dkgrey = grey*0.5;
   scrn_size = get(0,'screensize');
   fig_w = 620; fig_h = 440;
   flft = (scrn_size(3) - fig_w)/2;
   fbtm = (scrn_size(4) - fig_h)/2;


   ver_str = version;
   ver4    = length(findstr('4.',ver_str));
   if ver4,
      int_str = 'yes';
      f = figure('pos',[flft,fbtm,fig_w,fig_h],'menubar','none',...
            'name','Linear Phase Sequences','numbertitle','off',...
            'resize','off','vis','off','interruptible',int_str,...
            'color',dkgrey,'defaultaxesfontsize',10,...
            'defaulttextfontsize',10);
   else
      int_str = 'on';
      eval('f = colordef(''new'',''none'');');
      set(f,'pos',[flft,fbtm,fig_w,fig_h],'menubar','none',...
           'name','Linear Phase Sequences','numbertitle','off',...
           'resize','off','vis','off','interruptible',int_str,...
           'color',dkgrey,'defaultaxesfontsize',8,...
           'defaultuicontrolback',[0.5,0.5,0.5],...
           'defaulttextfontsize',8);
   end

%%% OPTIONS:%
   uim(1) = uimenu('label','OPTIONS');
   uim(2) = uimenu(uim(1),'label','Help and Info','callback','lpsighlp');
   uim(3) = uimenu(uim(1),'label','Export Data','separator','on',...
                          'callback','lpsiggui(15)');
   uim(4) = uimenu(uim(1),'label','Print Figure','separator','on',...
                          'callback','printdlg(gcf)');
   uim(5) = uimenu(uim(1),'label','Close and Exit','separator','on',...
                          'callback','close(gcf)');
   uim(6) = uimenu('label','   Axis Limits','separator','on',...
                          'callback','lpsiggui(17)');
   uim(7) = uimenu('label','   Zoom ON','separator','on',...
                          'callback','lpsiggui(18)');
   uim(8) = uimenu('label','   Zoom OFF','separator','on',...
                          'callback','lpsiggui(19)');
   uim(9) = uimenu('label','   RESIZE','callback','lpsiggui(20)');


%%%%%%%


   lft = 10; btm = fig_h - 5;
   ui(1) = uicontrol('style','frame','pos',[5,btm-142-24+90,175,60],...
           'back',grey,'fore',ltgrey);

   btm = btm - 42;
   ui(2) = uicontrol('style','text','pos',[lft,btm,30,17],...
           'string','x[n]','horiz','left');
   ui(3) = uicontrol('style','edit','pos',[lft+35,btm,130,18],...
           'back','w','string','1 2 3 2 1');%,'callback','lpsiggui(1)');

   btm=btm - 27;
   ui(4) = uicontrol('style','push','pos',[lft+20,btm,60,20],...
           'string','Accept','callback','lpsigplt');%,'vis','off');
   ui(9) = uicontrol('style','push','pos',[lft+85,btm,60,20],...
           'string','Reset','callback','lpsiggui(1)');%,'vis','off');

   uit = uicontrol('style','frame','pos',[5,btm-200+125,175,55],...
           'back',grey,'fore',ltgrey);

   btm = btm - 47;
   ui(13) = uicontrol('style','text','pos',[lft,btm,80,17],...
           'string','Freq Axis','fore','c','horiz','right');
   ui(14) = uicontrol('style','popup','pos',[lft+85,btm,80,20],...
           'string','F|Omega','back','w',...
           'callback','lpsigplt');

   btm = btm - 22;
   ui(15) = uicontrol('style','text','pos',[lft,btm,80,17],...
           'string','Freq Limits','fore','c','horiz','right','userdata',0);
   ui(16) = uicontrol('style','edit','pos',[lft+85,btm,80,20],...
           'string','0,0.5','back','w',...
           'callback','lpsigplt');

  ui(30) = uicontrol('style','frame','pos',[5,btm-160,175,140],...
           'back',grey,'fore',ltgrey);

   btm = btm -40;
   ui(31) = uicontrol('style','text','pos',[lft,btm,165,17],...
           'string','MULTIPLE ZEROS','fore','c','horiz','left');

   btm = btm - 22;
   ui(32) = uicontrol('style','text','pos',[lft,btm,165,20],...
           'back','w','horiz','left');

   btm = btm - 22;
   ui(33) = uicontrol('style','text','pos',[lft,btm,165,20],...
           'back','w','horiz','left');

   btm = btm - 22;
   ui(34) = uicontrol('style','text','pos',[lft,btm,165,20],...
           'back','w','horiz','left');

   btm = btm - 22;
   ui(35) = uicontrol('style','text','pos',[lft,btm,165,20],...
           'back','w','horiz','left');
   btm = btm - 25;
   ui(36) = uicontrol('style','text','pos',[lft,btm,165,20],...
           'back','w','horiz','left');

   btm = btm -120;
   ui(21) = uicontrol('style','check','pos',[lft+100,btm,70,20],...
           'string','Cursor','back','y','callback','lpsiggui(7)');



   pos = get(f,'pos');
   lef = pos(3)-166;
   bot = pos(4)-21;

   ui(17) = uicontrol('style','text','pos',[lef,bot,20,20],...
           'string','X ','horiz','right');
   ui(18) = uicontrol('style','text','pos',[lef+20,bot,60,20],...
           'string','','back','w');
   ui(19) = uicontrol('style','text','pos',[lef+85,bot,20,20],...
           'string','Y ','horiz','right');
   ui(20) = uicontrol('style','text','pos',[lef+105,bot,60,20],...
           'string','','back','w');
   set(ui(17:20),'vis','off');



   ui(7) = axes('units','pixel','pos',[220,35,160,160],'box','on',...
             'color','k','xgrid','on','ygrid','on');
  title('Linear Phase Signal x[n]');
   xlabel('DT Index  [n]');
   ui(8) = line('xdata',0,'ydata',0,'color','m','erase','back');
   if ver4,
      ui(12) = line('xdata',0,'ydata',0,'color','c','linestyle','o',...
                'erase','back');
   else
      ui(12) = line('xdata',0,'ydata',0,'color','m','linestyle','none',...
                    'marker','o','erase','back');
   end
   set(ui(7),'userdata',ui([8,12]));


   ui(10) = axes('units','pixel','pos',[430,35,160,160],'box','on',...
            'xlim',[-0.5,0.5],'color','k',...
             'xgrid','on','ygrid','on');
   title('Phase Spectrum [deg]');
   xlabel('Digital Frequency  [F]');
   ui(11) = line('xdata',0,'ydata',0,'color','y','erase','back');
   set(ui(10),'userdata',ui(11));
   set(ui(3),'userdata',ui(10));


   ui(23) = axes('units','pixel','pos',[220,240+5,160,160],'box','on',...
            'color','k','xgrid','on','ygrid','on');
   title('Zero Locations');
   ui(25) = line('xdata',0,'ydata',0,'color','y','erase','back');
   if ver4,
      ui(24) = line('xdata',0,'ydata',0,'color','c','linestyle','o',...
                'erase','back');
   else
      ui(24) = line('xdata',0,'ydata',0,'color','c','linestyle','none',...
                    'marker','o','erase','back','markersize',8);
   end
%   axis('equal');
   set(ui(23),'userdata',ui(24:25));


   ui(26) = axes('units','pixel','pos',[430,240+5,160,160],'box','on',...
            'xlim',[-0.5,0.5],'color','k',...
             'xgrid','on','ygrid','on');
   title('Amplitude Spectrum');
   xlabel('Digital Frequency  [F]');
   ui(27) = line('xdata',0,'ydata',0,'color','y','erase','back');
   set(ui(26),'userdata',ui(27));



   set(f,'userdata',ui);
   set(ui(1),'userdata',ui(10));
   lpsigplt;
   drawnow;
   set(f,'vis','on');


elseif mode == 1, % reset
   set(xn_edt,'string','1 2 3 2 1');
   lpsigplt;


elseif mode == 7, % cursor
    if get(curs_btn,'value')
    set(curs_dsp,'vis','on');

    set(f,'WindowButtonMotionFcn','lpsiggui(8)');

    else

  set(f,'Pointer','arrow','WindowButtonMotionFcn','');


   set(curs_dsp,'vis','off')
   set(curs_btn,'value',0),

    end


elseif mode == 8, % cursor movement
       h=gca;
       set(f,'currentaxes',h);
       lim=get(h,'pos');  % get current axis position
       c_p = [lim(1) lim(1)+lim(3) lim(2) lim(2)+lim(4)];
       f_p=get(f,'CurrentPoint'); % get co-ordinates of current point

     if f_p(1) < c_p(1) | f_p(1) > c_p(2) | f_p(2) < c_p(3) | f_p(2) > c_p(4)
        set(f,'Pointer','arrow');

        set(curs_dsp(2),'string','');
        set(curs_dsp(4),'string','');

     else
        curr_pt=get(h,'CurrentPoint');  % get current mouse position
        set(f,'Pointer','crosshair');
        set(curs_dsp(2),'string',num2str(curr_pt(1,1)));
        set(curs_dsp(4),'string',num2str(curr_pt(1,2)));
     end


elseif mode == 15, %Export data
lpsigplt;
fstr=get(ui(14),'string');fval=get(ui(14),'value');fstr=fstr(fval,:); %Hz

str1='Export signal x[n] as';
str2='Export zeros of x[n] as';
str3='Export amplitude spectrum as';
str4='Export phase (deg) as';
str5=['Export digital freqency ' fstr ' as'];

exp_str={str1,str2,str3,str4,str5};
exp_var={'lpsig','zlpsig','amplp','phaselp','flp'};
expect=inputdlg(exp_str,'Save Variables as',1,exp_var);
if ~isempty(expect)
na=get(ui(17),'userdata');%%% FIX FOR UIs 
da=get(ui(18),'userdata');%%% FIX FOR UIs 
fm=get(ui(19),'userdata');
fp=get(ui(20),'userdata');

if ~isempty(expect{1}),assignin('base',expect{1},na);end
if ~isempty(expect{2}),assignin('base',expect{2},da);end
if ~isempty(expect{3}),assignin('base',expect{3},fm(:,2));end
if ~isempty(expect{4}),assignin('base',expect{4},fp);end
if ~isempty(expect{5}),assignin('base',expect{5},fm(:,1));end
end



elseif mode == 16, % Axis Control Help
msgbox([' First click in a plot window.                             ',... 
'                  Then, come back and execute'],...
'Axis Control Info','help')

elseif mode == 17, % Axis Control
cur_axs=[];   cur_obj = gco;
   cur_par = get(cur_obj,'parent');
if ~isempty(cur_par)
   if cur_par == f,
      cur_axs = cur_obj;
   else
      cur_axs = cur_par;
   end
end

if isempty(cur_axs),lpsiggui(16);
else
set(curs_btn,'value',0);
lpsiggui(7); %%% REPLACE number BY CURSOR MODE 
if any(cur_axs==ui([7,10,23,26])),%%%% CHANGE UI numbers
if cur_axs==ui(7),txt='Linear-phase signal';%%%% CHANGE UI numbers
elseif cur_axs==ui(23),txt='Pole-zero plot';%%%% CHANGE UI numbers
elseif cur_axs==ui(26),txt='Amplitude';%%%% CHANGE UI numbers
elseif cur_axs==ui(10),txt='Phase';%%%% CHANGE UI numbers
end
axlimdlg(txt,[1 1]); %[1 1]=auto +linear/log,  [1 0]=auto, no linear/log
else
lpsiggui(16);
end
end


elseif mode == 18, % zoom on
set(curs_btn,'value',0);
lpsiggui(7);                    % Use CURSOR MODE 
if get(ui(15),'userdata')==0  %%Change ui(15) to whatever
zoom on
set(ui(15),'userdata',1);
else
msgbox('Zoom is already ON.','Zoom Info','help')
end

elseif mode == 19, % zoom off
set(curs_btn,'value',0);
lpsiggui(7);                    % Use CURSOR MODE 
if get(ui(15),'userdata')==1

%%%%%Insert old zoom off here
set(f,'currentaxes',ui(7));
zoom out,zoom reset,zoom off
set(f,'currentaxes',ui(10));
zoom out,zoom reset,zoom off
set(f,'currentaxes',ui(23));
zoom out,zoom reset,zoom off
set(f,'currentaxes',ui(26));
zoom out,zoom reset,zoom off
set(ui(15),'userdata',0);
else
msgbox('Zoom is already OFF.','Zoom Info','help')
end



elseif mode == 20, % mouse functionality
cur_axs = [];   cur_obj = gco;
   cur_par = get(cur_obj,'parent');


if ~isempty(cur_par)
   if cur_par == f,
      cur_axs = cur_obj;
   else
      cur_axs = cur_par;
   end
end


if isempty(cur_axs),lpsiggui(16);return,end

   if any(cur_axs == [mag_axs,phs_axs,pz_axs,sig_axs]),
      axes(cur_axs);
         axs_pos = get(cur_axs,'pos');
         if axs_pos(4) == 160, % need to maximize
            set(mag_axs,'pos',[-600 35 160 160]);
            set(phs_axs,'pos',[-600 35 160 160]);
            set(pz_axs,'pos',[-600 240+5 160 160]);
            set(sig_axs,'pos',[-600 240+5 160 160]);

            if cur_axs==pz_axs
            set(cur_axs,'pos',[210,35,375,375]);
            else
            set(cur_axs,'pos',[210,35,400,365]);
            end
         else % minimization
            set(mag_axs,'pos',[430 240+5 160 160]);
            set(phs_axs,'pos',[430 35 160 160]);
            set(pz_axs,'pos',[220 240+5 160 160]);
            set(sig_axs,'pos',[220 35 160 160]);

         end
   else
         lpsiggui(16);
   end



end