convergEU (version 0.7.3.2)

smoo_dataset: Smoother based on weighting

Description

The smoother substitutes an original raw value Y(m,i,t) of country m indicator i at time t with the weighted average y(m,i,t) = y(m,i,t-1) (1-w)/2 + w y(m,i,t) + y(m,i,t+1) (1-w)/2 where 0 < w < 1. The special case w=1 corresponds to no smoothing. In case of missing values an NA is returned. If the weight is outside the interval (0,1] then a NA is returned. The first and last values are smoothed using weights $w$ and $1-w$.

Usage

smoo_dataset(myTB, leadW = 1, timeTB = NULL)

Value

a matrix of dataset of smoothed values

Arguments

myTB

a complete dataset time by countries, with just country columns.

leadW

leading positive weight less or equal to 1.

timeTB

a dataset with the time variable, if a dataset is desired as output

References

https://www.eurofound.europa.eu/system/files/2022-04/introduction-to-the-convergeu-package-0.6.4-tutorial-v2-apr2022.pdf

Examples

# Example 1
# Dataset in the format time by countries:
myTB  <- tibble::tibble(
    time = 2001:2010,
    IT = c(10,14,13,12,9,11,13,17,15,25),
    DE = c(10,11,12,9,14,17,23,29,26,23)
    )

# Remove the time variable in order to obtain just country columns and compute smoothed values:
reSMO <- smoo_dataset(myTB[,-1], leadW=1)
reSMO1 <- smoo_dataset(myTB[,-1], leadW=0.5)

# Add the time variable for tibble in output:
reSMO2 <- smoo_dataset(myTB[,-1], leadW=.5,timeTB= dplyr::select(myTB,time))

# Example 2
# Smoother based on weighting for the emp_20_64_MS Eurofound dataset:
data(emp_20_64_MS)
# Select countries:
myTB <- dplyr::select(emp_20_64_MS, time, IT,DE,FR)
# Compute smoothed values by also adding the time variable to the output:
resSM <- smoo_dataset(dplyr::select(myTB,-time), leadW = 0.2, timeTB= dplyr::select(myTB,time))