Identify points in a plot, similarly to the identify function
in base graphics.
identify3d(x, y = NULL, z = NULL, labels = seq_along(x), n = length(x),
plot = TRUE, adj = c(-0.1, 0.5), tolerance = 20,
buttons = c("right", "middle"))A vector of selected indices.
coordinates of points in a scatter plot. Alternatively, any
object which defines coordinates (see xyz.coords)
can be given as x, and y and z left missing.
an optional character vector giving labels for the
points. Will be coerced using as.character, and
recycled if necessary to the length of x.
the maximum number of points to be identified.
logical: if plot is 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.
Duncan Murdoch
If buttons is length 1, the user can quit by reaching n
selections, or by hitting the
escape key, but the result will be lost if escape is used.
identify for base graphics, select3d for selecting regions.