display specific name on a graph with the cursor

Hello, I want to be able to display the name of the dot in a graph according to the vector position.

my code is

function
fig = figure;
a = [1 2 3 4 5]
b = [2 3 4 5 6]
name{1} ='one';
name{2} ='two';
name{3}='tree';
name{4}='four';
name{5}='five';
scatter(a, b, 'filled')
dcm_obj = datacursormode(fig);
set(dcm_obj,'UpdateFcn',@myupdatefcn)
end

function txt = myupdatefcn(empt,event_obj)
pos = get(event_obj,'Position');
nameNumber = 'WantCorrectNameHere';
txt = {['X: ',num2str(pos(1))],...
     ['Y: ',num2str(pos(2))],...
     nameNumber};
end

So I want to have access to the right name at the selected position for exemple for a(1);b(1) -> name{1}

Answer 1

[Jan]

Perhaps the SnapToDataVertex mode is useful?

function
fig = figure;
a = [1 2 3 4 5];
b = [2 3 4 5 6];
name = {'one', 'two', 'three', 'four', 'five'};
DCM_Data.Position = [a; b];
DCM_Data.Title = name;

scatter(a, b, 'filled')
dcm_obj = datacursormode(fig);
set(dcm_obj,'UpdateFcn', {@myupdatefcn, DCM_Data});

end

function txt = myupdatefcn(empt,event_obj, DCM_Data)
pos = get(event_obj,'Position');
[dummy, index] = min(((pos(1) - DCM_Data.Position(1, :)).^2) + ...
                     ((pos(2) - DCM_Data.Position(2, :)).^2));
nameNumber = DCM_Data.Title{index};
txt = {['X: ',num2str(pos(1))],...
     ['Y: ',num2str(pos(2))],...
     nameNumber};
end

[Christophe Nell]

Ok, thank you. I used a for loop and checked the positions of my objects compared to the cursor but this strategy is more elegant. Best

[Tolga Karabiyikoglu]

Thanks, Bought me out of a trouble so cheap...