subset.scdf: Subset cases, rows, and variables of an scdf

In scan: Single-Case Data Analyses for Single and Multiple Baseline Designs

Subset cases, rows, and variables of an scdf

Description

This function is mainly used to filter rows by a logical expression. It has also arguments to filter variables and cases.

Usage

## S3 method for class 'scdf'
subset(x, subset, select, cases, ...)

Arguments

x	An scdf object.
subset	Logical expression indicating rows to keep: missing values are taken as false.
select	Expression, indicating columns to select from an scdf.
cases	Expression, indicating cases to keep from an scdf.
...	not implemented

Details

For subsetting rows, a logical expression can be provided in the subset argument. Missing values are treated as FALSE. The expression is evaluated within each single-case data frame of the scdf.

Value

An scdf.

Examples

exampleAB |>
  subset((values < 60 & phase == "A") | (values >= 60 & phase == "B"))
subset(exampleAB_add, select = c(-cigarrets, -depression))
subset(exampleAB, cases = c(Karolina, Johanna))
subset(exampleA1B1A2B2, phase %in% c("A1", "B2"), cases = Pawel:Moritz)

scan documentation built on April 1, 2026, 9:06 a.m.