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function demnlab(action);
%DEMNLAB A front-end Graphical User Interface to the demos
%
% Description
% This function will start a user interface allowing the user to select
% different demonstration functions to view. The demos are divided into
% 4 groups, with the demo being executed by selecting the desired
% option from a pop-up menu.
%
% See also
%
% Copyright (c) Ian T Nabney (1996-2001)
% If run without parameters, initialise gui.
if nargin<1,
action='initialise';
end;
if strcmp(action,'initialise'),
% Create figure
fig = figure( ...
'Name', 'Netlab Demos', ...
'NumberTitle', 'off', ...
'Color', [0.7529 0.7529 0.7529], ...
'Visible', 'on');
% Create GROUPS
% Bottom of demo buttons
group1_bot = 0.20;
group1_top = 0.75;
uicontrol(fig, ...
'Style', 'frame', ...
'Units', 'normalized', ...
'Position', [0.03 group1_bot 0.94 group1_top - group1_bot], ...
'BackgroundColor', [0.5 0.5 0.5]);
% Bottom of help and close buttons
group2_bot = 0.04;
uicontrol(fig, ...
'Style', 'frame', ...
'Units', 'normalized', ...
'Position', [0.03 group2_bot 0.94 0.12], ...
'BackgroundColor', [0.5 0.5 0.5]);
% Draw title
hLogoAxis = axes( ...
'Units', 'normalized', ...
'Position', [0.05 0.82 0.90 0.14], ...
'Box', 'off', ...
'XColor', [0 0 0], ...
'YColor', [0 0 0], ...
'Visible', 'on');
load netlogo; % load image and colour map
colormap(netcmap(1:3,:)); % change colour map: don't need many entries
image(nlogo); % draw logo
axis('image'); % ensures pixels on axis are square
axis off; % turn axes off
% Create static text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.05 group1_top-0.1 0.90 0.08], ...
'String', 'Select demo to run:');
% First row text offset
tRow1Offset = 0.14;
% Offset between text and button
TBoffset = 0.07;
% First row button offset
bRow1Offset = tRow1Offset+TBoffset;
% ONE text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.08 group1_top-tRow1Offset 0.36 0.05], ...
'String', 'Regression');
popup1str(1) = {'Select Option'};
popup1str(2) = {'Multi-Layer Perceptron'};
popup1str(3) = {'Radial Basis Function'};
popup1str(4) = {'Mixture Density Network'};
% ONE popup
hPop1 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String', popup1str, ...
'Position', [0.08 group1_top-bRow1Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup1');
% TWO text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.56 group1_top-tRow1Offset 0.36 0.05], ...
'String', 'Classification');
popup2str(1) = popup1str(1);
popup2str(2) = {'Generalised Linear Model (2 class)'};
popup2str(3) = {'Generalised Linear Model (3 class)'};
popup2str(4) = {'Multi-Layer Perceptron'};
popup2str(5) = {'K nearest neighbour'};
% TWO popup
hPop2 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String', popup2str, ...
'Position', [0.56 group1_top-bRow1Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup2');
tRow2Offset = 0.30;
bRow2Offset = tRow2Offset+TBoffset;
% THREE text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.08 group1_top - tRow2Offset 0.36 0.05], ...
'String', 'Density Modelling and Clustering');
popup3str(1) = popup1str(1);
popup3str(2) = {'Gaussian Mixture (EM training)'};
popup3str(3) = {'Gaussian Mixture (spherical)'};
popup3str(4) = {'Gaussian Mixture (diagonal)'};
popup3str(5) = {'Gaussian Mixture (full)'};
popup3str(6) = {'Neuroscale'};
popup3str(7) = {'GTM (EM training)'};
popup3str(8) = {'GTM (visualisation)'};
popup3str(9) = {'K-means clustering'};
popup3str(10) = {'Self-Organising Map'};
% TWO popup
% THREE popup
hPop3 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String', popup3str, ...
'Position', [0.08 group1_top - bRow2Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup3');
% FOUR text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.56 group1_top - tRow2Offset 0.36 0.05], ...
'String', 'Bayesian Methods');
popup4str(1) = popup1str(1);
popup4str(2) = {'Sampling the MLP Prior'};
popup4str(3) = {'Evidence Approximation for MLP'};
popup4str(4) = {'Evidence Approximation for RBF'};
popup4str(5) = {'Evidence Approximation in Classification'};
popup4str(6) = {'ARD for MLP'};
popup4str(7) = {'Sampling the GP Prior'};
popup4str(8) = {'GPs for Regression'};
popup4str(9) = {'ARD for GP'};
% FOUR popup
hPop4 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String', popup4str, ...
'Position', [0.56 group1_top - bRow2Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup4');
tRow3Offset = 0.45;
bRow3Offset = tRow3Offset+TBoffset;
% FIVE text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.08 group1_top - tRow3Offset 0.36 0.05], ...
'String', 'Optimisation and Visualisation');
popup5str(1) = popup1str(1);
popup5str(2) = {'Algorithm Comparison'};
popup5str(3) = {'On-line Gradient Descent'};
popup5str(4) = {'Hinton Diagrams'};
% FIVE popup
hPop5 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String',popup5str, ...
'Position', [0.08 group1_top - bRow3Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup5');
% SIX text
uicontrol(fig, ...
'Style', 'text', ...
'Units', 'normalized', ...
'BackgroundColor', [0.5 0.5 0.5], ...
'Position', [0.56 group1_top - tRow3Offset 0.36 0.05], ...
'String', 'Sampling');
popup6str(1) = popup1str(1);
popup6str(2) = {'Sampling a Gaussian'};
popup6str(3) = {'MCMC sampling (Metropolis)'};
popup6str(4) = {'Hybrid MC (Gaussian mixture)'};
popup6str(5) = {'Hybrid MC for MLP I'};
popup6str(6) = {'Hybrid MC for MLP II'};
% SIX popup
hPop6 = uicontrol(fig, ...
'Style','popup', ...
'Units','normalized', ...
'String', popup6str, ...
'Position', [0.56 group1_top - bRow3Offset 0.36 0.08], ...
'BackgroundColor', [0.7 0.7 0.7], ...
'Callback', 'demnlab popup6');
% Create HELP button
uicontrol(fig, ...
'Units', 'normalized', ...
'Position' , [0.05 group2_bot+0.02 0.40 0.08], ...
'String', 'Help', ...
'Callback', 'demnlab help');
% Create CLOSE button
uicontrol(fig, ...
'Units', 'normalized', ...
'Position' , [0.55 group2_bot+0.02 0.40 0.08], ...
'String', 'Close', ...
'Callback', 'close(gcf)');
hndlList=[fig hPop1 hPop2 hPop3 hPop4 hPop5 hPop6];
set(fig, 'UserData', hndlList);
set(fig, 'HandleVisibility', 'callback');
elseif strcmp(action, 'popup1'),
hndlList=get(gcf,'UserData');
hPop = hndlList(2);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demmlp1;
case 3
demrbf1;
case 4
demmdn1;
end;
elseif strcmp(action,'popup2'),
hndlList=get(gcf,'UserData');
hPop = hndlList(3);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demglm1;
case 3
demglm2;
case 4
demmlp2;
case 5
demknn1;
end
elseif strcmp(action,'popup3'),
hndlList=get(gcf,'UserData');
hPop = hndlList(4);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demgmm1;
case 3
demgmm2;
case 4
demgmm3;
case 5
demgmm4;
case 6
demns1;
case 7
demgtm1;
case 8
demgtm2;
case 9
demkmn1;
case 10
demsom1;
end
elseif strcmp(action,'popup4'),
hndlList=get(gcf,'UserData');
hPop = hndlList(5);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demprior;
case 3
demev1;
case 4
demev3;
case 5
demev2;
case 6
demard;
case 7
demprgp;
case 8
demgp;
case 9
demgpard;
end
elseif strcmp(action,'popup5'),
hndlList=get(gcf,'UserData');
hPop = hndlList(6);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demopt1;
case 3
demolgd1;
case 4
demhint;
end
elseif strcmp(action,'popup6'),
hndlList=get(gcf,'UserData');
hPop = hndlList(7);
selected = get(hPop, 'Val');
set(hPop, 'Val', [1]);
switch selected
case 2
demgauss;
case 3
demmet1;
case 4
demhmc1;
case 5
demhmc2;
case 6
demhmc3;
end
elseif strcmp(action, 'help'),
helpStr = {'To run a demo, press the appropriate button.'; ...
'Instructions and information will appear in the Matlab';...
'command window.'};
hHelpDlg = helpdlg(helpStr, 'Netlab Demo Help');
end;
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