Type function for plotting a cubic (or Hermite) spline interpolation. Arguments are passed to spline; see this latter function for default argument values.
type_spline(
n = NULL,
method = "fmm",
xmin = NULL,
xmax = NULL,
xout = NULL,
ties = mean
)
n
|
if xout is left unspecified, interpolation takes place at n equally spaced points spanning the interval [xmin, xmax].
|
method
|
specifies the type of spline to be used. Possible values are “fmm”, “natural”, “periodic”, “monoH.FC” and “hyman”. Can be abbreviated.
|
xmin, xmax
|
left-hand and right-hand endpoint of the interpolation interval (when xout is unspecified).
|
xout
|
an optional set of values specifying where interpolation is to take place. |
ties
|
handling of tied x values. The string “ordered” or a function (or the name of a function) taking a single vector argument and returning a single number or a length-2 list of both, see approx and its ‘Details’ section, and the example below.
|
See spline for further details on the available interpolation methods.
library("tinyplot")
# "spline" type convenience string
tinyplot(dist ~ speed, data = cars, type = "spline")
# Use `type_spline()` to pass extra arguments for customization
tinyplot(dist ~ speed,
data = cars, type = type_spline(method = "natural", n = 25),
add = TRUE, lty = 2)