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This function build the alphas matrix for a dataframe of a curve_type curve on a basis on a regul_time vector.

Usage

univariate_alpha_building(
  df,
  basis,
  curve_type = NULL,
  regul_time,
  id_col = "id",
  time_col = "time"
)

Arguments

df

a dataframe (id, time, value_or_state)

basis

a basis fd object

curve_type

a character, 'cat' or 'num'

regul_time

a numeric vector for time regularization

id_col

a character for the id column name

time_col

a character for the time column name

Value

a matrix

Author

Francois Bassac