plot.dfts: Plot dfts objects

In fChange: Functional Change Point Detection and Analysis

Plot dfts objects

Description

Provides various visualizations for functional data.

Usage

## S3 method for class 'dfts'
plot(
  x,
  changes = NULL,
  type = c("spaghetti", "fast", "rainbow", "banded", "acf", "pacf", "summary", "qq",
    "distribution", "change", "interval", "surface"),
  plot_title = x$name,
  val_axis_title = NULL,
  res_axis_title = NULL,
  FD_axis_title = NULL,
  eye = NULL,
  aspectratio = NULL,
  showticklabels = TRUE,
  lag.max = 20,
  d.max = 2,
  alpha = 0.05,
  TVE = 0.95,
  distribution = c("norm"),
  method = c("Welch", "MC", "Imhof"),
  legend = TRUE,
  highlight_changes = TRUE,
  intervals = confidence_interval(x, changes),
  int.gradual = TRUE,
  ...
)

Arguments

x	A dfts object or data which can be automatically converted to that format. See dfts().
changes	Vector of numeric change point locations. Can be NULL.
type	Choice of plotting method. Options include: 'spaghetti', 'fast', 'rainbow','banded','acf', 'pacf', 'summary', 'qq', 'distribution', 'change', 'interval', and'surface'.
plot_title	Title to include on the return plot.
val_axis_title, res_axis_title, FD_axis_title	Title for the axis giving the values (val), the resolution of the fparam (res), and the functional observations (FD).
eye, aspectratio	Angle (eye) and ratio (aspectratio) to view 3d plots.
showticklabels	Boolean if the tick marks should be shown.
lag.max	Max number of lags to consider for ACF/PACF and summary plots.
d.max	Max number of dimensions for qq/distribution and summary plots.
alpha	Significance level to be used in various plots. Value in [0,1].
TVE	Total variance explained used in qq/distribution plots. Value in [0,1].
distribution	String of the distribution to compare against in. distribution plot. The string can be anything such that there is a rdistribution and ddistribution function available. For example 'exp', 'gamma'. Additional parameters can be passed using ... .
method	Method for computing ACF/PACF. Options include 'Welch', 'MC', and 'Imhof'.
legend	Boolean if legend should be given in qq/distribution plots.
highlight_changes	Boolean if changes should be highlighted in black.
intervals	Information on confidence intervals of changes for change plot. See confidence_interval().
int.gradual	Boolean if confidence interval be solid gray (FALSE) or gradual colors (TRUE) when type='change' plot.
...	Details for plotting in acf/pacf, summary, or distribution function.

Value

Plot of varying types.

References

John Fox, & Sanford Weisberg (2019). An R Companion to Applied Regression. Sage.

Examples

plt <- plot(electricity)
plt <- plot(dfts(var(electricity)), type = "surface")

fChange documentation built on June 21, 2025, 9:08 a.m.