kableExtra (version 0.9.0)

collapse_rows: Collapse repeated rows to multirow cell

Description

Collapse same values in columns into multirow cells. This feature does similar things with group_rows. However, unlike group_rows, it analyzes existing columns, finds out rows that can be grouped together, and make them multirow cells. Note that if you want to use column_spec to specify column styles, you should use column_spec before collapse_rows.

Usage

collapse_rows(kable_input, columns = NULL, valign = c("middle", "top",
  "bottom"), latex_hline = c("full", "major", "none", "custom"),
  row_group_label_position = c("identity", "stack"),
  custom_latex_hline = NULL, row_group_label_fonts = NULL,
  headers_to_remove = NULL)

Arguments

kable_input

Output of knitr::kable() with format specified

columns

Numeric column positions where rows need to be collapsed.

valign

Select from "top", "middle"(default), "bottom". The reason why "top" is not default is that the multirow package on CRAN win-builder is not up to date.

latex_hline

Option controlling the behavior of adding hlines to table. Choose from full, major, none, custom.

row_group_label_position

Option controlling positions of row group labels. Choose from identity, stack.

custom_latex_hline

Numeric column positions whose collapsed rows will be separated by hlines.

row_group_label_fonts

A list of arguments that can be supplied to group_rows function to format the row group label when row_group_label_position is stack

headers_to_remove

Numeric column positions where headers should be removed when they are stacked.

Examples

# NOT RUN {
dt <- data.frame(a = c(1, 1, 2, 2), b = c("a", "a", "a", "b"))
x <- knitr::kable(dt, "html")
collapse_rows(x)

# }