MATLAB: Are there hot keys (shortcuts) that enable interactive mouse controlled pan and zoom for a figure

hotkeysinteractive pan & zoomshortcuts

I have MANY global satellite data swaths that are displayed with geoshow() output. We need to zoom into specific regions quickly and pan around in those areas with mouse (not keyboard) input. The behavior of the "zoom-in" magnifying glass and "pan" hand that are enabled from the Tools pull down menu of the default File toolbar for figures is perfect. What i'm looking for is a way to enable those controls (and switch between them) quickly with hotkeys instead of having to access that Tools pull down for every mode change.

Docs describe keyboard controls for zoom in and pan. Neither work in my figure output and we want the mouse (vs. keyboard) control anyway.

Thanks!

Best Answer

Here's a way that works by using the uimenu's accelerator option. There will be a menu you could use or ctrl + letter to activate:

function HotKeyAcc
% A figure
fig = figure('menubar','none');
% Add menus with Accelerators
mymenu = uimenu('Parent',fig,'Label','Hot Keys');
uimenu('Parent',mymenu,'Label','Zoom','Accelerator','z','Callback',@(src,evt)zoom(fig,'on'));
uimenu('Parent',mymenu,'Label','Rotate','Accelerator','r','Callback',@(src,evt)rotate3d(fig,'on'));
uimenu('Parent',mymenu,'Label','Pan','Accelerator','p','Callback',@(src,evt)pan(fig,'on'));
% Some plot
plot(rand(1,50))
end

Related Solutions

MATLAB: Datacursormode: how to permanently turn on “make new data tip”

Although the official documentation of the datacursormode function says explicitly that:

"You place data tips only by clicking data objects on graphs. You cannot place them programmatically (by executing code to position a data cursor)."

This is in fact WRONG AND MISLEADING, as I explained far back in 2011: https://undocumentedmatlab.com/blog/controlling-plot-data-tips

The general solution for your specific request:

1. First, set the plot line's button-down function to a custom callback function:

hLine = plot(...);
set(hLine, 'ButtonDownFcn', @lineClickedCallback);

2. Next, implement this callback function that will add the requested data-tip at the clicked location:

function lineClickedCallback(hLine, eventData)
   % Get the clicked position from the event-data
   pos = eventData.IntersectionPoint;
   % Get the line's containing figure
   hFig = ancestor(hLine,'figure');
   % Get the figure's datacursormode object
   cursorMode = datacursormode(hFig);  
   % Create a new data-tip at the clicked location
   hDatatip = cursorMode.createDatatip(hLine);
   set(hDatatip, 'Position',pos, 'MarkerSize',5, 'MarkerFaceColor','none', 'MarkerEdgeColor','r', 'Marker','o', 'HitTest','off');
end

You can modify this code to make the data-tip and/or marker look different.

MATLAB: How to disable the ZOOM context menu in MATLAB 7.6 (R2008a)

To control the behavior of a right-click action when ZOOM is active change the property ‘rightclickaction’ of the zoom mode object.

A value of 'InverseZoom' causes a right-click to zoom out.

h=zoom(gcf);
set(h,'rightclickaction','InverseZoom');

Best Answer

Related Solutions

MATLAB: Datacursormode: how to permanently turn on “make new data tip”

MATLAB: How to disable the ZOOM context menu in MATLAB 7.6 (R2008a)

Related Question