in draggingFcn function

I want to store all these values in a matrix and not able to do that.

You can set whatever callbacks you want on a line, even if there are different callbacks on different lines in the same axes. They are independent.

You can use hold on, line (the primitive command), or plot(x,y,x2,y2). These would all work.

How can I create two independent lines. (with this properties)
I create a GUI, which has to know this option on a axes, where I have already plotted something else before.
How can I implement it to work well.
Thank you for your answers in advance.

Aron

George

Each line can have its own callback function. hObject is always the calling object, so things stay clear in the callbacks.

Doug

Thanks for sharing this with us. It is extremely helpful.

How would make this example work if you have a random amount of lines? i.e. you didnt know how many lines were going to be in the figure everytime you ran the script.

How would the dragginFcn know the handle of the particular line you were dragging?

It’s probably easy to do but I thought I would ask you.

Thanks

A high level function like plot often changes a lot of values in the underlying axes when it is run. Check the axes after plot to make sure all the callbacks, properties and such you are expecting are still there.

This is done because in the general case, it is what you usually want. For higher level Handle Graphics manipulation like this, you need to watch these convenience functions carefully.

Doug

When I start up the GUI, it works great. BUT after I’ve drawn something on the axis (using a plot() function) nothing happens; it’s almost like axes1_ButtonDownFcn is disabled. What’s going on?

% --- Executes on mouse press over axes background.
function axes1_ButtonDownFcn(hObject, eventdata, handles)
% hObject    handle to axes1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
pt = get(hObject, 'currentPoint');
AStr = strcat('x = ',num2str(pt(1,1)),'  and  y = ',num2str(pt(1,2)));
set(handles.text5,'String',AStr);

Óscar