convertToCfd: Convert data to categorical functional data

In modal-inria/cfda: Categorical Functional Data Analysis

Convert data to categorical functional data

Description

Convert data to categorical functional data

Usage

convertToCfd(
  x,
  breaks,
  labels = NULL,
  include.lowest = FALSE,
  right = TRUE,
  times = NULL,
  idLabels = NULL,
  nx = 200,
  byrow = FALSE
)

Arguments

x	matrix or fd object
breaks	either a numeric vector of two or more unique cut points or a single number (greater than or equal to 2) giving the number of intervals into which x is to be cut.
labels	labels for the levels of the resulting category. By default, labels are constructed using "(a,b]" interval notation. If labels = FALSE, simple integer codes are returned instead of a factor.
include.lowest	logical, indicating if an ‘x[i]’ equal to the lowest (or highest, for right = FALSE) ‘breaks’ value should be included.
right	logical, indicating if the intervals should be closed on the right (and open on the left) or vice versa.
times	vector containing values at which fd is to be evaluated
idLabels	vector containing id labels. If NULL it use the names found in the matrix or fd object
nx	Only if x is a fd object. Number of points to evaluate fd
byrow	Only if x is a matrix. If FALSE, one column = one trajectory

Value

a data.frame in the cfda format

See Also

flours

Other format: cut_data(), matrixToCfd(), remove_duplicated_states()

Examples

# fd object
data("CanadianWeather")
temp <- CanadianWeather$dailyAv[,, "Temperature.C"]
basis <- create.bspline.basis(c(1, 365), nbasis = 8, norder = 4)
fd <- smooth.basis(1:365, temp, basis)$fd

# "Very Cold" = [-50:-10), "Cold" = [-10:0), ...
out <- convertToCfd(fd, breaks = c(-50, -10, 0, 10, 20, 50),
                    labels = c("Very Cold", "Cold", "Fresh", "OK", "Hot"),
                    times = 1:365)

# matrix
out2 <- convertToCfd(temp, breaks = c(-50, -10, 0, 10, 20, 50),
                     labels = c("Very Cold", "Cold", "Fresh", "OK", "Hot"),
                     times = 1:365, byrow = FALSE)

modal-inria/cfda documentation built on Oct. 19, 2023, 10:03 a.m.