locate_one_file {stats19}

Pin down a file on disk from four parameters.

Description

Pin down a file on disk from four parameters.

Usage

locate_one_file(
  filename = NULL,
  data_dir = get_data_directory(),
  year = NULL,
  type = NULL
)

Arguments

filename

Character string of the filename of the .csv to read, if this is given, type and years determine whether there is a target to read, otherwise disk scan would be needed.

data_dir

Where sets of downloaded data would be found.

year

Single year for which file is to be found.

type

One of: 'Collision', 'Casualties', 'Vehicles'; ignores case.

Value

One of: path for one file, a message ⁠More than one file found⁠ or error if none found.

Examples

locate_one_file()
locate_one_file(filename = "Cas.csv")