How to click the subplots

I want to get the indexces of the subplot if clicked by mouse. For example, I have 10 figures shown by subplot.

for i=1:10
  subplot(1,5,i), imshow(img{i});
end

Now if user click image 5, and 8 then somehow I should get variable name C with values 5 and 8.

Answer 1

[Jan]

function FigH = main
FigH = figure('UserData', []);
for i = 1:10
  subplot(1, 10, i);     % You need 10 SUBPLOTs for 10 images
  image(rand(100,100,3), 'ButtonDownFcn', {@Callback, i});  % Not IMSHOW
end

function Callback(ObjectH, EventData, Index)
FigH = ancestor(ObjectH, 'figure');
disp(Index)
UserData = [get(FigH, 'UserData'), Index];
set(FigH, 'Userdata', UserData);

Now you can call this from e.g. the command line:

FigH = main;

Then click on the images as wanted. Finally you can request:

C = get(FigH, 'UserData')

Answer 2

[Ling Mei]

the simplest way is just add 'axcopy' to the end of the figure,

such as:

figure();
for i=1:4
subplot(2,2,i);
plot(1:10,rand(1,10)*100,'k','linew',2);
end
axcopy;

You would have a pop-out subplot if you click the area of subplotted figure.

[Walter Roberson]

axcopy appears to be a ucsd function such as http://www.indiana.edu/~pcl/busey/temp/eeglabtutorial4.301/allfunctions/axcopy.m and appears to be included in eeglab

I also find a modified version in erplab