new-data: New tsibble data and append new observations to a tsibble

In earowang/tsibble: Tidy Temporal Data Frames and Tools

New tsibble data and append new observations to a tsibble

Description

\lifecycle

stable

append_row(): add new rows to the start/end of a tsibble by filling a key-index pair and NA for measured variables.

append_case() is an alias of append_row().

Usage

new_data(.data, n = 1L, ...)

## S3 method for class 'tbl_ts'
new_data(.data, n = 1L, keep_all = FALSE, ...)

append_row(.data, n = 1L, ...)

Arguments

.data	A tbl_ts.
n	An integer indicates the number of key-index pair to append. If n > 0, future observations n < 0, past observations
...	Passed to individual S3 method.
keep_all	If TRUE keep all the measured variables as well as index and key, otherwise only index and key.

Examples

new_data(pedestrian)
new_data(pedestrian, keep_all = TRUE)
new_data(pedestrian, n = 3)
new_data(pedestrian, n = -2)

tsbl <- tsibble(
  date = rep(as.Date("2017-01-01") + 0:2, each = 2),
  group = rep(letters[1:2], 3),
  value = rnorm(6),
  key = group
)
append_row(tsbl)
append_row(tsbl, n = 2)
append_row(tsbl, n = -2)

earowang/tsibble documentation built on Feb. 6, 2024, 11:27 a.m.