delta_conv {convergEU}

Delta-convergence statistic

Description

Given a dataframe of quantitative indicators along time, the delta convergence is a statistic describing departures from best performer. A time variable may be present or not, but if it is not present then rows must be already sorted. Missing values are not allowed. If the time variable is omitted, subsequent rows are separated by one time unit.

Usage

delta_conv(
  tavDes,
  timeName = "time",
  indiType = "highBest",
  time_0 = NA,
  time_t = NA,
  extended = FALSE
)

Arguments

tavDes

the dataframe time by countries.

timeName

the name of the variable that contains time information; if it is set to NA then no time information is exploited.

indiType

the indicator type; the default is "highBest", otherwise it is equal to "lowBest".

time_0

starting time to consider; if NA all times considered.

time_t

last time to consider; if NA all times considered.

extended

if FALSE only measures of convergence are produced, otherwise the declaration of convergence is also provided.

Value

a tibble with the value of delta-conv (called delta) along time, which is called 'time'.

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
# Delta convergence with time present
# Dataframe in the format time by countries:
myTB  <- tibble::tribble(
~time, ~UK, ~DE, ~IT,
1988,   1201, 868, 578,
1989,   1150, 978, 682,
1990,   998,  1250, 332
)
resDelta <- delta_conv(myTB)

# Example 2
# Delta convergence with scrambled time order (time present):
myTB2  <- tibble::tribble(
~time, ~UK, ~DE, ~IT,
1990,   998,  1250, 332,
1988,   1201, 868, 578,
1989,   1150, 978, 682
)
resDelta1<-delta_conv(myTB2)

# Example 3
# Delta convergence, scrambled time and different name for the time variable:
myTB2  <- tibble::tribble(
~years, ~UK, ~DE, ~IT,
90,   998,  1250, 332,
88,   1201, 868, 578,
89,   1150, 978, 682
)
resDelta2 <- delta_conv(myTB2,timeName="years")

# Example 4
# Delta convergence for the emp_20_64_MS Eurofound dataset:
data("emp_20_64_MS")
# check name of the time variable:
names(emp_20_64_MS)

# Calculate delta convergence:
resDelta3<-delta_conv(emp_20_64_MS)

# Obtain measures of delta-convergence and the declaration of convergence:
resDelta4<-delta_conv(emp_20_64_MS, extended = TRUE)