MATLAB: Change Data Cursor text

data cursordata tipsupdatefcn

Hello, i try to change the data tip of the data cursor and use this function:

function txt = myupdatefcn(empt,event_obj)
% Customizes text of data tips
handles = getappdata(gcf,'mydata');
pos = get(event_obj,'Position');
flux = handles.S.PoolNames(pos(1));
pool = handles.S.FluxNames(pos(2));
wert = handles.S.Stoich(pos(2),pos(1));
txt = {['Flux: ',flux{1}],['Pool: ',pool{1}],['Wert: ',wert{1}]};

In the OpeningFcn of the gui i call this function:

dcm = datacursormode(hObject);
set(dcm,'Enable','on','UpdateFcn',@myupdatefcn);

But it did not work and I can't find my mistake. Can anyone help me?

Best Answer

The problem was the string

now i tried:

txt = sprintf('Flux: %s\nPool: %s\nWert: %d.2',flux{1},pool{1},wert);

and this work

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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

Best Answer

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