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Inspect cached Metro SP data

Source: R/cache.R
metrosp_cache.Rd

Lists the files downloaded by read_metro_demand(). The cache directory is resolved from the metrosp.cache_dir option, then the METROSP_CACHE_DIR environment variable, and finally tools::R_user_dir(). Printing the result also shows the resolved directory.

Usage

metrosp_cache()

# S3 method for class 'metrosp_cache'
print(x, ...)

Arguments

x

A cache listing returned by metrosp_cache().

...

Additional arguments passed to the data-frame print method.

Value

A data frame with one row per cached file, holding the vintage tag, file name, size in bytes, and modification time. Zero rows when the cache is empty.

x, invisibly.

Details

Each read marks its vintage as used. A vintage left unused for 90 days is deleted the next time read_metro_demand() touches the cache.

See also

metrosp_cache_clear() to remove cached files.

Examples

metrosp_cache()
#> Cache directory: /home/runner/.cache/R/metrosp
#> [1] vintage  file     bytes    modified
#> <0 rows> (or 0-length row.names)