I’m working on a MATLAB plot where I want to achieve the following functionality:
Change the color of a line when it’s clicked.
Enable panning by dragging while clicking off the line.
Enable zooming using the scroll wheel.
Here’s the simple code I’m using:

% Plotting a simple line
h = plot([0,1],[0,1],’LineWidth’,3);

% Setting the ButtonDownFcn to change line color (placeholder code)
h.ButtonDownFcn = @(~,~) disp(h);

In this example, clicking on the line displays its handle h in the Command Window, which is a placeholder for my actual code to change the line color.

The Problem:

Assigning a ButtonDownFcn to the line object seems to override MATLAB’s built-in pan and zoom functionalities. After setting the ButtonDownFcn, I’m unable to pan by clicking and dragging off the line, and the scroll wheel zoom no longer works. It appears that the custom callback interferes with the default interactive behaviors, even when I’m not interacting directly with the line.

My Questions:

Why does setting the ButtonDownFcn on the line object disable panning and zooming, even when interacting off the line?
Is there a way to have both the custom click behavior (changing the line color when clicked) and retain the default pan and zoom functionalities when interacting elsewhere on the plot?I’m working on a MATLAB plot where I want to achieve the following functionality:
Change the color of a line when it’s clicked.
Enable panning by dragging while clicking off the line.
Enable zooming using the scroll wheel.
Here’s the simple code I’m using:

% Plotting a simple line
h = plot([0,1],[0,1],’LineWidth’,3);

% Setting the ButtonDownFcn to change line color (placeholder code)
h.ButtonDownFcn = @(~,~) disp(h);

In this example, clicking on the line displays its handle h in the Command Window, which is a placeholder for my actual code to change the line color.

The Problem:

Assigning a ButtonDownFcn to the line object seems to override MATLAB’s built-in pan and zoom functionalities. After setting the ButtonDownFcn, I’m unable to pan by clicking and dragging off the line, and the scroll wheel zoom no longer works. It appears that the custom callback interferes with the default interactive behaviors, even when I’m not interacting directly with the line.

My Questions:

Why does setting the ButtonDownFcn on the line object disable panning and zooming, even when interacting off the line?
Is there a way to have both the custom click behavior (changing the line color when clicked) and retain the default pan and zoom functionalities when interacting elsewhere on the plot? I’m working on a MATLAB plot where I want to achieve the following functionality:
Change the color of a line when it’s clicked.
Enable panning by dragging while clicking off the line.
Enable zooming using the scroll wheel.
Here’s the simple code I’m using:

% Plotting a simple line
h = plot([0,1],[0,1],’LineWidth’,3);

% Setting the ButtonDownFcn to change line color (placeholder code)
h.ButtonDownFcn = @(~,~) disp(h);

In this example, clicking on the line displays its handle h in the Command Window, which is a placeholder for my actual code to change the line color.

The Problem:

Assigning a ButtonDownFcn to the line object seems to override MATLAB’s built-in pan and zoom functionalities. After setting the ButtonDownFcn, I’m unable to pan by clicking and dragging off the line, and the scroll wheel zoom no longer works. It appears that the custom callback interferes with the default interactive behaviors, even when I’m not interacting directly with the line.

My Questions:

Why does setting the ButtonDownFcn on the line object disable panning and zooming, even when interacting off the line?
Is there a way to have both the custom click behavior (changing the line color when clicked) and retain the default pan and zoom functionalities when interacting elsewhere on the plot? callback, plot MATLAB Answers — New Questions

​