deactivate ButtonDownFcn ? stupid question

2014 8 11
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更新时间：2014 8 11
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Hey Guys,
stupid Question: I have created a function(pushbutton) with the ButtonDownFcn to work with my Plot. Its task is to zoom in everytime i click on the plot. Now is there a way, to deactivate the ButtonDownFcn ? so i can click on a plot without triggering the fcn ?

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Joakim Magnusson
Joakim Magnusson 2014-8-11

0 个投票

Maybe you can have for example a radio button. In your buttonDownFcn you can have an if statement to check if the radiobutton is activated or not. If it's not activated you will zoom, and if it is activated you won't zoom.

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Max Müller
Max Müller 2014-8-11
if the ButtonDownfcn is set....its set
Iain
Iain 2014-8-11
Or you can have another button which changes the function that gets called by the button whose behaviour you want to change.
Or you may be able to use the eventdata to change what you do - though you'll need to do some tests to find out what happens when you, say, hold control, when you click.
Andy L
Andy L 2014-8-11
编辑：Andy L 2014-8-11
I like joakim's solution. You can then use the zoom property on each radiobutton click.
%%callback to radio button Zoom on
% Turn off other radiobutton
zoom on; % Turn Zoom On.
zoom reset; % Set axis for zoom out.
%%callback to radio button zoom off.
% Turn off other radiobutton
zoom out; % Zoom out to "zoom reset" axis.
zoom off; % Turn zoom off.
This eliminates the need for a push button.

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Adam
Adam 2014-8-11

2 个投票

Can you not just turn your push button into a toggle and have it set ButtonDownFcn to [] if it is currently set to whatever you usually set it to?

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Max Müller
Max Müller 2014-8-11
this works as well
if isempty(findobj('tag','ZoomedPlot')) == 1
else
close ZoomedPlot;
end
Data = findobj('type','axes');
set(Data,'buttondownfcn',@ClickToZoom);
function ClickToZoom (gcbo,evendata,handles)
Data = gca;
ZoomedPlot = figure;
newData = copyobj(Data,ZoomedPlot);
set(newData,'Position', [0.1 0.1 0.85 0.85]);

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