function CustomDataCursor(fh, varargin)
% CustomDataCursor Customize data cursor for a figure

dcm_obj = datacursormode(fh);
set(dcm_obj,'UpdateFcn',{@myupdatefcn})


function txt = myupdatefcn(~,event_obj)
% Customizes text of data tips
pos = get(event_obj,'Position');
I   = get(event_obj, 'DataIndex');
txt = {['X: ',num2str(pos(1))],...
       ['Y: ',num2str(pos(2))]};
   
% If there is a Z-coordinate in the position, display it as well
if length(pos) > 2
    txt{end+1} = ['Z: ',num2str(pos(3))];
end

% If the tag field of the selected object is not blank, display it
temp = event_obj.Target.Tag;

if ~isempty(temp)
    txt{end+1} = temp;
end

% If the userdata field is not blank, display it

temp = event_obj.Target.UserData;

if ~isempty(temp)
    txt{end+1} = ['T: ' num2str(temp,'%.2f')];
end