This function reads in all files from a directory using the chosen import
function. Use the 'pattern' argument to specify a set of files, or a
single file type. If collapse = TRUE bind is used
to match column names and bind the imported data into a single object.
All ingest functions use the source file name as an identifying
column to track provenance and relate data and metadata read from files.
Please check that you have unique file names.
ingest_directory( directory = getwd(), ingest.function = utils::read.csv, pattern = "*", collapse = TRUE, recursive = FALSE, check.duplicates = "warn", ... )
| directory | A character vector with the name of the directory that contains your data files. Defaults to the working directory. |
|---|---|
| ingest.function | The function to use to read in the files, defaults to
|
| pattern | A character vector providing the pattern to match filenames as
in |
| collapse | A logical argument, when true a single object is returned,
when false an object is returned for each file. Defaults to |
| recursive | A logical argument, when true files are read recursively,
defaults to |
| check.duplicates | A character argument specifying the action that should be taken if files with duplicate contents are detected. One of "warn", "remove", or NULL to disable checking. Defaults to "warn". |
| ... | Additional arguments to pass to the input method |
When collapse = T a single object matching the output class
of fun is returned. When collapse = F a single object is
returned matching the output class of fun in the parent environment
of the function. The names of the input sources are used as object names.
If check.duplicates = "remove" then only a single set of records will
be retained when files have identical contents. This does not provide rowwise
checking for duplicates. A separate data.frame is created specifying the removed
input_source, the number of records removed, and the reason for removal.