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tsibble

The tsibble package provides a data infrastructure for tidy temporal data with wrangling tools. Adapting the tidy data principles, tsibble is a data- and model-oriented object. In tsibble:

Their llms.txt

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# tsibble

The **tsibble** package provides a data infrastructure for tidy temporal
data with wrangling tools. Adapting the [tidy data
principles](https://tidyr.tidyverse.org/articles/tidy-data.html),
*tsibble* is a data- and model-oriented object. In *tsibble*:

1.  Index is a variable with inherent ordering from past to present.
2.  Key is a set of variables that define observational units over time.
3.  Each observation should be uniquely identified by **index** and
    **key**.
4.  Each observational unit should be measured at a common **interval**,
    if regularly spaced.

## Installation

You could install the stable version on CRAN:

``` r
install.packages("tsibble")
```

You could install the development version from Github using

``` r
# install.packages("remotes")
remotes::install_github("tidyverts/tsibble")
```

## Get started

### Coerce to a tsibble with `as_tsibble()`

To coerce a data frame to *tsibble*, we need to declare key and index.
For example, in the `weather` data from the package `nycflights13`, the
`time_hour` containing the date-times should be declared as **index**,
and the `origin` as **key**. Other columns can be considered as measured
variables.

``` r
library(dplyr)
library(tsibble)
weather <- nycflights13::weather %>% 
  select(origin, time_hour, temp, humid, precip)
weather_tsbl <- as_tsibble(weather, key = origin, index = time_hour)
weather_tsbl
#> # A tsibble: 26,115 x 5 [1h] <America/New_York>
#> # Key:       origin [3]
#>   origin time_hour            temp humid precip
#>   <chr>  <dttm>              <dbl> <dbl>  <dbl>
#> 1 EWR    2013-01-01 01:00:00  39.0  59.4      0
#> 2 EWR    2013-01-01 02:00:00  39.0  61.6      0
#> 3 EWR    2013-01-01 03:00:00  39.0  64.4      0
#> 4 EWR    2013-01-01 04:00:00  39.9  62.2      0
#> 5 EWR    2013-01-01 05:00:00  39.0  64.4      0
#> # ℹ 26,110 more rows
```

The **key** can be comprised of empty, one, or more variables. See
[`package?tsibble`](https://tsibble.tidyverts.org/reference/tsibble-package.md)
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