How do I add both zoom and pan ability using mouse to a plot?

Question

Magnu Blomberg 2016-5-18

0
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https://ww2.mathworks.cn/matlabcentral/answers/284812-how-do-i-add-both-zoom-and-pan-ability-using-mouse-to-a-plot

回答： Simon T 2019-11-2

I have been trying to add both zoom and pan ability to a plot using the mouse scroll wheel and the drag to pan functionality. The area is a map and I would like the same kind of control as in Google Maps etc. I can achieve these functionalities separately with, e.g. the following code.

plot([0 10], [2 8]);
zoom on;
%pan on;

When I try to add both these, i.e. remove the comment, it fails and simply leaves me with the last specified functionality.

I tried to add the respective functionality on scroll wheel and click callbacks,

set(gcf,'WindowScrollWheelFcn', @scrollCb);
set(gcf,'WindowButtonDownFcn', @panCb);

where scrollCb is defined as

function scrollCb(obj, evnt)
zoom on;
display('zoom on');

and panCb with the corresponding code. This does not work and adding a new function callback within the function didn't work either.

Does anyone have a solution to this?

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Adam 2016-5-18

As far as I am aware the built-in pan and zoom modes are mutually exclusive. In essence though they just change the xlim and ylim properties of your image so you could program your own non-mutually exclusive versions attached to your callbacks.

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