comtradr 1.0.5

New Features

• Added available_variables to ct_get_ref_table() to query comprehensive metadata about all Comtrade API variables. Returns variable descriptions, original API field names, and tidy column names in a single table. This makes it easy to:
  • Understand what each column in trade data represents
  • Create data dictionaries for documentation
  • Map between original and tidy column names Example: ct_get_ref_table("available_variables")

Minor improvements

• Enhanced documentation for reference tables
• Added comprehensive tests for variable metadata functionality and ct_perform_request()

comtradr 1.0.4

• patched ct_get_ref_table to also return reporterCodeIsoAlpha2 and partnerCodeIsoAlpha2, see: https://github.com/ropensci/comtradr/issues/94
• patched an error, where the wrong object was initialised for EB02 for querying services, see: https://github.com/ropensci/comtradr/issues/96
• thanks to luifrancgom and possakorn for pointing and fixing errors

comtradr 1.0.3

• this is a patch to fix a bug that was introduced when fixing the bug about tidy cols. Now tidy cols are returned again.
• testing for this error was introduced in the test environment to avoid this in the future.

comtradr 1.0.2

• this is a patch to fix two bugs in the package:
  • a missing return in the call to tidy_cols did not allow users to set this argument to false, see https://github.com/ropensci/comtradr/issues/88 and commit 6f34592 (thanks @FATelarico)
  • a missing parameter in the file size conversion function did not allow the bulk facility to download small files. This has been fixed.

comtradr 1.0.1

• this is a patch to fix a CRAN policy violation, namely that the cache was written in the wrong directory due to using rappdirs.

• If you have used comtradr prior to version 1.0.1 I recommend running ct_migrate_cache() to copy files to the new cache and remove the old cache

comtradr 1.0.0

• with this update comtradr has reached full functionality, including bulk files

New features

• BULK DOWNLOAD ADDED: the function ct_get_bulk has been added. It enables the use of the bulk download facility from Comtrade.

• Please see the vignette https://docs.ropensci.org/comtradr/articles/bulk_files.html for details

Bug fixes

• The check for the parameter flowCode did not allow the value “everything” as it should. Now it does (commit 279cf03)

comtradr 0.4.0.0

• comtradr has received a complete overhaul. Please reference the Readme for all new functions and use-cases.

NEW FEATURES

• Caching Functionality: Implemented enhanced caching features, and added a dedicated vignette explaining caching concepts. Environment variables allow for configuration of some caching features.

• Functionality Updates: Major updates to key functions such as ct_get_data and ct_get_ref_table, including parameter adjustments and usability improvements, mostly checks for all important parameters before the request is send out.

Deprecated in Version 0.4.0

• ct_commodity_db_type
  • Deprecated with no direct alternative.
• ct_country_lookup
  • Deprecated, use country_codes dataset for country codes.
• ct_search
  • Deprecated, use ct_get_data() as an alternative.
• ct_update_databases
  • Deprecated, utilize the update parameter in ct_get_data.
• ct_use_pretty_cols
  • Deprecated, replaced by the process argument in main functions.
• ct_get_reset_time
  • Deprecated, no longer relevant due to daily call limit enforcement.
• ct_get_remaining_hourly_queries
  • Deprecated, as hourly reset time no longer exists.
• ct_register_token
  • Deprecated, use set_primary_comtrade_key() instead.

comtradr 0.3.0.09000

• No news yet!

comtradr 0.3.0

NEW FEATURES

• Modifications to ct_search() to add support for commodity code ag6 (#30)

BUG FIXES

• Function ct_register_token() now checks if the provided token is recognized by the official API and only grants “premium” credentials if it is (#34).

• Passing an API token string to ct_register_token() now properly bumps the hourly rate limit up to 10,000 (#21).

• In func ct_search(), passing a character vector of long-form commodity descriptions to arg commod_codes will now throw an error prior to making an API call, which would fail (#24).

• Update the country package data, to stay up to date with the reporter/partner country table that Comtrade is using. This is an update to the file inst/extdata/country_table.rda. (#29).

• In func ct_search(), improve error messaging when an input country is invalid. (#31).

• In func ct_search(), fix bug in which running queries using the SITCrev2 commodity type was returning raw HTML (as opposed to json data). (#27).

• In func ct_country_lookup(), remove NA inputs from multi-country lookups (previously NA was being stringified and included in the pipe-separated regex lookup).

comtradr 0.2.2

• Remove unused dependency methods from Imports.

comtradr 0.2.1

NEW FEATURES

• Modifications to ct_search() to allow for pulling all monthly data for an entire year in a single query (#14)
• For function ct_search(), expanded the valid input types for args start_date and end_date (#10).

BUG FIXES

• ct_search() now supports all commodity classifications offered by UN Comtrade (#16).
• The updates generated by function ct_update_databases() are now properly preserved between R sessions (#11).
• Passing "services" to arg type within function ct_search() now uses commodity classification EB02 by default (previously this would throw an error, fixes #6).
• When using commodity classification EB02 within function ct_search(), passing "TOTAL" to arg commod_codes no longer returns zero results (#7).
• ct_commodity_lookup() no longer returns zero results when passing all caps input to arg search_terms (#9).

comtradr 0.1.0

PKG API CHANGES

• Eliminated functions ct_commodities_table and ct_countries_table.
• Added new functions ct_update_databases, ct_use_pretty_cols, ct_commodity_db_type, ct_register_token, ct_get_reset_time, ct_get_remaining_hourly_queries.
• Renamed functions: commodity_lookup is now ct_commodity_lookup, country_lookup is now ct_country_lookup.
• The commodity and country reference tables are now saved as cached package data, and accessed by comtradr functions when necessary. This replaces the need for functions ct_commodities_table and ct_countries_table.
• Reorder function arguments within function ct_search.
• Changed some function argument names to ensure snake_case is being used throughout the package.
• ct_search now returns a data frame, as opposed to a list.

MINOR CHANGES

• Added a vignette directory, with an “Intro to comtradr” vignette.
• API requests are now throttled based on the rate limits imposed by the UN Comtrade.
• Added function for setting a valid API key/token (ct_register_token).
• Appending API metadata to each returned data frame as attributes (url of the API call, date-time of the query, duration of the query in seconds).
• Added package level man page.
• Now using native R errors/warnings, as opposed to nesting API status codes in a returned list.
• Imports changes: remove dplyr, add magrittr and purrr.
• Expand and improve test coverage via testthat.

BUG FIXES

• The issues related to type-safety in function commodity_lookup have been fixed by importing purrr and using purrr::map in place of sapply. This fixes issue #2 and issue #3.

comtradr 0.0.2 (2017-07-03)

NEW FEATURES

• commodity_lookup(): Expanded function to accept multiple commodities or commodity codes (as either character vector or numeric vector). Also added argument “return_char” that allows the user to specify list output or char vector output, and argument “return_code” that specifies output of commodity descriptions or commodity codes.

MINOR IMPROVEMENTS

• Add unit tests via testthat.

comtradr 0.0.1 (2017-04-06)

NEW FEATURES

• released to CRAN