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widr 0.1.0

Initial CRAN release.

Download

• download_wid(): download data from the WID API; returns a wid_df, a classed data.frame compatible with dplyr and ggplot2 without unwrapping
• download(): alias for download_wid()

Code grammar

• wid_validate(), wid_is_valid(): validate WID code components; the latter returns a scalar logical without throwing
• wid_encode(), wid_decode(): convert between variable codes (e.g. "sptinc992j") and named component lists
• wid_search(): search any of the six reference tables by regex

Post-download helpers

• wid_tidy(): decode variable codes into human-readable columns; coerceyear to integer and value to double
• wid_convert(): currency conversion via WID exchange-rate series; supports "lcu", "usd", "eur", "gbp", "ppp", "yppp"
• wid_metadata(): fetch source and methodological information for the variables in a wid_df

Inequality measures

• wid_gini(): Gini coefficient from a share series
• wid_top_share(): top fractile income or wealth share
• wid_percentile_ratio(): percentile ratio (e.g. P90/P10) from a threshold series

Plotting

• wid_plot_timeseries(): time-series line chart; returns a ggplot object
• wid_plot_compare(): cross-country bar or point chart for a single year
• wid_plot_lorenz(): Lorenz curve

Query objects

• wid_query(): build a reusable query object
• wid_filter(): update query fields
• wid_fetch(): execute a query

Cache

• wid_cache(): get, set, list, or clear cached API responses
• wid_cache_list(): list cached files
• wid_cache_clear(): remove all cached files

Reference tables

Six lookup tables synchronised from https://wid.world/codes-dictionary/:wid_series_types, wid_concepts, wid_ages, wid_pop_types, wid_countries, wid_percentiles.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.