scan (version 0.40)

truncateSC: Truncate single-case data

Description

This function truncates data points at the beginning and / or end each phase.

Usage

truncateSC(data, dvar, pvar, truncate = list(A = c(0, 0), B = c(0, 0)),
  na = TRUE)

Arguments

data

A single-case data frame. See scdf to learn about this format.

dvar

Character string with the name of the dependent variable. Defaults to the attributes in the scdf file.

pvar

Character string with the name of the phase variable. Defaults to the attributes in the scdf file.

truncate

A list with a vector of two (beginning and end) values for each phase defining the number of data points to be deleted. For lists of single-case data frames, the truncation is adapted to the length of each phase for each single case.

na

If FALSE, the truncated measurement times are deletet. If TRUE, NAs are set for the dependent variable.

Value

A truncated data frame (for each single-case).

See Also

Other data manipulation functions: fillmissingSC, longSCDF, outlierSC, rankSC, scaleSC, shiftSC, smoothSC

Examples

# NOT RUN {
# Truncate the first two data points of both phases and compare the two data sets
study <- c(
  "Original" = byHeart2011[1], 
  "Selected" = truncateSC(byHeart2011[1], truncate = list(A = c(2,0), B = c(2,0)))
)
plot(study)

# }