Arguments
id
Input value name. For example, if the value is "plot_hover",
then the hover coordinates will be available as input$plot_hover.
delay
How long to delay (in milliseconds) when debouncing or
throttling, before sending the mouse location to the server.
delayType
The type of algorithm for limiting the number of hover
events. Use "throttle" to limit the number of hover events to one
every delay milliseconds. Use "debounce" to suspend events
while the cursor is moving, and wait
clip
Should the hover area be clipped to the plotting area? If FALSE,
then the server will receive hover events even when the mouse is outside
the plotting area, as long as it is still inside the image.
nullOutside
If TRUE (the default), the value will be set to
NULL when the mouse exits the plotting area. If FALSE, the
value will stop changing when the cursor exits the plotting area.