Identify points in a plot, similarly to the
in base graphics.
|x, y, z||
coordinates of points in a scatter plot. Alternatively, any
object which defines coordinates (see
an optional character vector giving labels for the
points. Will be coerced using
the maximum number of points to be identified.
numeric vector to use as
the maximal distance (in pixels) for the pointer to be ‘close enough’ to a point.
a length 1 or 2 character vector giving the buttons to use for selection and quitting.
buttons is length 1, the user can quit by reaching
selections, or by hitting the
escape key, but the result will be lost if escape is used.
A vector of selected indices.