Subset rows using their positions

DataSHIELD implentation of dplyr::slice.

sliceDS(tidy_expr, df.name, .by, .preserve)

Arguments

tidy_expr

Provide either positive values to keep, or negative values to drop. The values provided must be either all positive or all negative. Indices beyond the number of rows in the input are silently ignored.

df.name

A data frame, data frame extension (e.g. a tibble), or a lazy data frame (e.g. from dbplyr or dtplyr).

.by

Optionally, a selection of columns to group by for just this operation, functioning as an alternative to group_by.

.preserve

Relevant when the df.name input is grouped. If .preserve = FALSE (the default), the grouping structure is recalculated based on the resulting data, otherwise the grouping is kept as is.

Value

An object of the same type as df.name, typically a data frame or tibble.