Usage
brushOpts(id = NULL, fill = "#9cf", stroke = "#036", opacity = 0.25, delay = 300, delayType = c("debounce", "throttle"), clip = TRUE, direction = c("xy", "x", "y"), resetOnNew = FALSE)
Arguments
id
Input value name. For example, if the value is "plot_brush",
then the coordinates will be available as input$plot_brush. Multiple
imageOutput/plotOutput calls may share the same id
value; brushing one image or plot will cause any other brushes with the
same id to disappear.
fill
Fill color of the brush.
stroke
Outline color of the brush.
opacity
Opacity of the brush
delay
How long to delay (in milliseconds) when debouncing or
throttling, before sending the brush data to the server.
delayType
The type of algorithm for limiting the number of brush
events. Use "throttle" to limit the number of brush events to one
every delay milliseconds. Use "debounce" to suspend events
while the cursor is moving, and wait until the cursor has been at rest for
delay milliseconds before sending an event.
clip
Should the brush area be clipped to the plotting area? If FALSE,
then the user will be able to brush outside the plotting area, as long as
it is still inside the image.
direction
The direction for brushing. If "xy", the brush can be
drawn and moved in both x and y directions. If "x", or "y",
the brush wil work horizontally or vertically.
resetOnNew
When a new image is sent to the browser (via
renderImage), should the brush be reset? The default,
FALSE, is useful if you want to update the plot while keeping the
brush. Using TRUE is useful if you want to clear the brush whenever
the plot is updated.