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stats19 4.1.0

• Support for 2025 Data: Full support for the newly published 2025 STATS19 casualty, vehicle, and collision dataset from the Department for Transport (fixes #315).
• Documentation and Dataset Updates: Updated dataset list, documentation, examples, and metadata for 1979-2025 coverage (fixes #315).
• Citation Prompt on Attach: Added package citation details (Lovelace et al. 2019) and citation("stats19") instructions to the package startup message.
• Bug Fixes & Data Quality Improvements:
  • Preserved character class for alphanumeric collision indices, avoiding NA coercions (fixes #231).
  • Eliminated unmatched parser warnings during dataset loading (fixes #257).
  • Ensured valid POSIXct datetime creation for midnight 00:00 timestamps (fixes #236).
  • Enhanced vehicle make cleaning rules for Freight Rover and Austin Morris (fixes #296).

stats19 4.0.0

Major Refactor and Performance Improvements

• Zero-Warning Data Loading: The read_stats19() function now intelligently filters column parsers based on the actual CSV header, eliminating extensive warnings about unmatched parsers (#302).
• Modernized readr Engine: The package now defaults to readr Edition 2 globally for faster, multi-threaded parsing, while removing legacy platform-specific overrides (#302).
• Optional duckdb Engine: Added a new engine = "duckdb" option to get_stats19(). This allows for extremely fast, database-level filtering before loading data into R, yielding up to a 75x speed-up when querying the full historical (1.5GB) dataset.
• Code Simplification: Removed ~300 lines of redundant code from the R/ directory while expanding overall functionality (#302).

Data Quality and Schema Unification

• Unified Longitudinal Schema: Columns like accident_* and collision_* are now automatically unified during formatting. This ensures multi-year joins (e.g., 2023 vs 2024) work seamlessly without duplicate columns.
• Unified Longitudinal Schema: Historic columns (e.g., *_historic) are now automatically merged into their modern counterparts and dropped, providing a consistent interface across different data years (#302).
• Fixed Coordinate Precision: Corrected a bug where 2024 Latitude/Longitude were parsed as integers, restoring full floating-point precision (#302).
• Aggressive Label Standardization: Global standardization of missing value codes (e.g., -1, Code deprecated, Data missing) to NA after formatting (#302).
• Smart E-scooter Unification: Added logic to automatically identify and flag e-scooter riders in casualty data by cross-referencing vehicle information (#302, #299).

New Features

• Intelligent Multi-Year Support: Requesting year ranges (e.g., year = 2011:2012) now automatically identifies the bulk historic files, downloads them once, and filters requested years efficiently (#302).
• Cost Estimation: Added match_tag() function to join government TAG (Transport Analysis Guidance) cost estimates (RAS4001) to collision data (#287, #288, #289, #290).
• Vehicle Cleaning: New functions clean_make(), clean_model(), and clean_make_model() for standardizing vehicle data, supported by a mapping of over 2,400 unique raw strings (#294).

Minor Changes and Fixes

• Fixed issue where year = 1979 incorrectly returned all years; it now correctly returns 1979 data only (#282).
• Updated lookup tables using a new reproducible schema_new.R workflow (#291).
• Included ‘Other Junction’ in the schema table (#271).
• Moved the %||% operator to utils.R for package-wide availability (#302).

stats19 3.4.0 2025-10

• Major updates to deal with new file names and column names in updated files hosted by the Department for Transport (#268)
• Refactored download logic to no longer use .zip files, which are no longer served by the DfT. The package now downloads .csv files directly.
• Switched from download.file() to curl::curl_download() for more robust downloads (#258).
• Improved documentation around setting a permanent download directory using the STATS19_DOWNLOAD_DIRECTORY environment variable (#211).
• Promoted essential packages for data download and formatting (dplyr, lubridate, jsonlite) from Suggests to Imports.
• Replaced reshape2 with tidyr for data manipulation (#276).
• Added support for downloading the last 5 years of data using year = "5 years" (#261).
• The get_stats19_adjustments() function now returns a message explaining that adjustments are included in the main casualty dataset, as the separate adjustments file is no longer provided by the DfT (#266).
• Added a new vignette that reproduces the DfT’s pedestrian factsheet (#240, #277).

stats19 3.3.1 2025-01

• Downloads now work when you are on networks with firewalls (#255)

stats19 3.3.0 2025-01

• Support for 2023 data (#251)
• Another round of updates to the schema files thanks to updates from the DfT

stats19 3.2.0 2024-10

• Updates so package functions fail gracefully when input data is not as expected, e.g. due to URL changes (#252)

stats19 3.1.0 2024-07

• stats19 now relies on the stats19_variables object to format the different tables columns (#245) (credit @layik), fixing an issue in which ages were removed from the casualties table, fixing (#235)
• If year is less than 2018 the package auto-downloads the full dataset (#239)

stats19 3.0.3 2024-02

• Update documentation to account for the shift in table names, replacing accidents with collisions and casualty with casualties (#232)

stats19 3.0.2 2023-11

• Fix issue with coordinates as characters (#228)

stats19 3.0.1 2023-10

• Minor update to increase default timeout in get_stats19() to 10 minutes (#226)

stats19 3.0.0 2023-10

• Major update so the package works with the new csv files (up to 2022)
• Deprecation of read_accidents in favour of read_collisions and using consistent collision instead of accidents.
• Other minor improvements

stats19 2.0.1 2022-11

• Changes spatstat.core related code (#217)

stats19 2.0.0 2020-10

• Major changes to the datasets provided by the DfT have led to major changes to the package. See (#212) for details.
• To reduce code complexity the package no longer supports reading in multiple years
• This puts the onus on the user of the package to understand the input data, rather than relying on clever coding to join everything together. Note: you can easily join different years, e.g. with the command purrr::map_dfr().

stats19 1.5.0 2021-10

• Support new https download links (#208)
• Package tests now pass when wifi is turned off
• URLs have been fixed

stats19 1.4.3 2021-07-21

• Use 1st edition of readr on Windows to prevent errors on reading data (#205)

stats19 1.4.2 2021-07

• Fix CRAN checks associated with access to online resources (#204)
• Fix issues associated with get_ULEZ() and get_MOT() functions

stats19 1.4.1

• New function get_ULEZ() to get data on vehicles from a number plate (thanks to Ivo Wengraf)
• Added a test to prevent rare failures in get_stats19() when data_dir points to the working directory

stats19 1.4.0

• Add get_stats19_adjustments() function
• Use GH Actions for CI (#177)
• Fixed a problem with get_stats19() and multiple years that could be linked with the same data file (#168)
• Fix issues with vignettes for CRAN (#190)

stats19 1.3.0

• Support for 2019 data (#171)

stats19 1.2.0

• Tests now pass on the development version of R (4.0.0)
• The package now has a hex sticker! See https://github.com/ropensci/stats19/issues/132 for discussion
• The output of formatted crash datasets gains a new column, datetime that is a properly formatted date-time (POSIXct) object in the correct timezone (Europe/London) (#146)
• Enables the download of multiple years as per https://github.com/ropensci/stats19/issues/99, thanks to Layik Hama
• Users can now set the default data download directory with STATS19_DOWNLOAD_DIRECTORY=/path/to/data in your .Renviron file: https://github.com/ropensci/stats19/issues/141
• get_stats19() gains a new argument output_format() that enables results to be returned as an sf object or a ppp object for use the the spatstat package thanks to work by Andrea Gilardi https://github.com/ropensci/stats19/pull/136

stats19 1.1.0

• Now enables the download of 2018 data
• Various bug fixes, see https://github.com/ropensci/stats19/issues
• Update website link: https://docs.ropensci.org/stats19/
• New work-in-progress vignette on vehicles data: https://docs.ropensci.org/stats19/articles/stats19-vehicles.html

stats19 1.0.0

• Major change to dl_stats19(): it is now much easier to download STATS19 data. By default ask = FALSE in get_stats19() and dl_stats19().

stats19 0.2.1

• Fixed issue with column labels not being there - see #82

stats19 0.2.0

• get_stats19() gains an ask argument (TRUE by default, set as FALSE to make road crash data access even more automated!)
• The date column now is of the correct class after formatting POSIXct. See #86
• Added a NEWS.md file to track changes to the package.

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