ButtonDownFcn question - different actions on different axes (using GUIDE)

Hi.

I am using a mouse down call back to plot a linescan on an image at the mouse location. This all works fine. My issue is that I only want this to happen if I am over a certain axes on my GUIDE layout (i.e. axes1). If I'm on another axes e.g axes2, then I want the mouse click to do something else.

When I display my image in axes 1 I do this:

axes(handles.axes1) 
imageHandle=imshow(img,[low,high]);
set(imageHandle,'ButtonDownFcn',@ImageClickCallback);   %assign to the buttondown function

I then have the ButtonDownFcn as:

function ImageClickCallback (objectHandle, eventData)

handles = guidata(objectHandle);
axesHandle=get(objectHandle,'Parent');   %Object handle is the image
coordinates=get(axesHandle,'CurrentPoint');

curX = coordinates(1,1)
curY = coordinates(1,2)
x=round(curX)
y=round(curY)
...then perform line scan

so is it possible to limit this mouseclick action just to the axes 1

axes(handles.axes1);

And how would I go about creating another function that operates on axes 2 when I press the mouse button

Thanks Jason

[Adam]

I'm not sure I get the problem here. You assigned the ButtonDownFcn on the image handle so it will only respond when you click the image and the image can only be on one axes so it will naturally not trigger on the other axes.

You can just program another function for the other axes. You can use the ButtonDownFcn of the axes themselves, but unless that is your particular problem I won't go into details about what you need in order for that to work with an image in the axes. Setting the image ButtonDownFcn works fine if it fills the whole axes and represents what you want to click on.

[Jason]

OK, So

    axes(handles.axes2);
    imageHandle2=imshow(img2,[low,high]);
    set(imageHandl2e,'ButtonDownFcn',@ImageClickCallback2);

So I can now define a 2nd function ImageClickCallback2 which will then only apply to the axes2?

Thanks Jason

[Adam]

Yep. Most objects have their own ButtonDownFcn.

If you want to do things with mouse motion it is more difficult as only the Figure has a callback for that, but for button clicks you can be very specific.

[Jason]

Great, thanks