n1=30; n2=20; n3=50;
y = [rand(n1,1); rand(n2,1)+1; rand(n3,1)+2];
group= [2*ones(n1,1); ones(n2,1); zeros(n3,1)];
X = rand(n1+n2+n3,1);
gscatter(X,y,group);
% Make the legends clickable
clickableMultiLegend();

z = peaks(100);
plot(z(:,26:5:50),'LineWidth',3)
grid on;
% define the names of the legend labels for both plots
names = {'Line1','Line2','Line3','Line4','Line5'};
clickableMultiLegend(names , 'Location', 'NorthWest','FontSize',14);
figure;
plot(z(:,32:5:56),'LineWidth',3)
grid on;
hlegend=clickableMultiLegend(names, 'Location', 'NorthWest','FontSize',14);

% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
gplotmatrix(X,y,group);
% Without arguments, the effect is on the default legend
clickableMultiLegend();

% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
gplotmatrix(X,y,group);
% Now we just want to change the font size of the legend
clickableMultiLegend('FontSize',14);

% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
gplotmatrix(X,y,group);
% Update the legend and make them clickable
clickableMultiLegend({'group 1' , 'group 2' , 'group 3'},'FontSize',14);

% This example shows that clickableMultiLegend can also receive the 
% handles returned by a multiple panel figure such as gplotmatrix.
% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
[H,AX,bigax] = gplotmatrix(X,y,group);
% Set the DisplayName property (i.e. the texts of the legend) in all panels.
% Note that in the gplotmatrix only one legend is visible.
set(H(:,:,1),'DisplayName','group 10');
set(H(:,:,2),'DisplayName','group 20');
set(H(:,:,3),'DisplayName','group 30');
% Get the handles of the legend to update
hLines  = findobj(AX(1,end), 'type', 'line');
% Update the legend and make them clickable
clickableMultiLegend(hLines,'FontSize',14);

% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
[H,AX,bigax] = gplotmatrix(X,y,group);
% Get the new legend texts directly from the plot
% (takes into account a change in the legend property names in 2016b)
if verLessThan('matlab','9.1')
legstring='LegendPeerHandle';
else
legstring='LayoutPeers';
end
leg = get(getappdata(AX(1,end),legstring),'String');
% Get the handles of the legend to update
hLines  = findobj(AX(1,end), 'type', 'line');
% Change the order of the legend strings, for exaple by sorting
hLines = sort(hLines);
% Update the legend and make them clickable
clickableMultiLegend(hLines, leg{:},'FontSize',14);

% Here we make a gplotmatrix plot clickable, then we change the labels
% after a convenient reshape of its handles array: while H is a 3-dimensional
% array with the third dimension associated to the groups, newH is 2-dimensional 
% with lines associated to the subplots of the scatterplot and columns
% associated to the groups. This simplifies the redefinition of the 
% DisplayName property.
% Simulate X and y with 3 groups
X = rand(100,4);
y = [rand(10,1); rand(20,1)+1; rand(70,1)+2];
group= [2*ones(10,1); ones(20,1); zeros(70,1)];
% Generate the scatter matrix
[H,AX,bigax] = gplotmatrix(X,y,group);
% make the legend clickable
clickableMultiLegend('FontSize',14);
% reshape the line handles array
hLines  = findobj(AX(1,end), 'type', 'line');
nleg = numel(hLines);
newH = reshape(H,numel(H)/nleg,nleg);
% redefine the legend texts
for i = 1 : nleg
set(newH(:,i),'DisplayName',['Redefined group n. ' num2str(i)]);
end
% If the legend texts were clickable before the re-definition, they
% will remain clickable.