Allows the user to interact with items displayed within plot legends to easily toggle visibility (left mouse-click) or delete from the axes (right mouse-click). This function uses publicly available code to toggle visibility using the ItemHitFcn callback for legend objects. However, it also utilizes undocumented MATLAB functionality to create context menus and delete unwanted items from the legend's parent axes.
Designed to work with plots generated using plot, loglog, semilogx, and semilogy, it will likely work with most other plot functions that incorporate the use of legends.
This function also work in conjuction with the DragDataTip (v4.4+) function also available on File Exchange.