Identify points in a plot, similarly to the
in base graphics.
coordinates of points in a scatter plot. Alternatively, any
object which defines coordinates (see
can be given as
z left missing.
an optional character vector giving labels for the
points. Will be coerced using
recycled if necessary to the length of
the maximum number of points to be identified.
TRUE, the labels are
printed near the points and if
FALSE they are omitted.
numeric vector to use as
adj parameter to
text3d when plotting the labels.
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.