R: Add rows to a data frame

add_row {tibble}

R Documentation

Add rows to a data frame

Description

This is a convenient way to add one or more rows of data to an existing data frame. See tribble() for an easy way to create an complete data frame row-by-row.

Usage

add_row(.data, ..., .before = NULL, .after = NULL)

Arguments

`.data`	Data frame to append to.
`...`	Name-value pairs, passed on to `tibble()`. Only columns that exist in `.data` can be used, unset columns will get an `NA` value. These arguments are passed on to `tibble()`, and therefore also support unquote via `!!` and unquote-splice via `!!!`.
`.before, .after`	One-based row index where to add the new rows, default: after last row.

Details

add_case() is an alias of add_row().

Examples

# add_row ---------------------------------
df <- tibble(x = 1:3, y = 3:1)

add_row(df, x = 4, y = 0)

# You can specify where to add the new rows
add_row(df, x = 4, y = 0, .before = 2)

# You can supply vectors, to add multiple rows (this isn't
# recommended because it's a bit hard to read)
add_row(df, x = 4:5, y = 0:-1)

# Absent variables get missing values
add_row(df, x = 4)

# You can't create new variables
## Not run: 
add_row(df, z = 10)

## End(Not run)