This function imports multiple data files of the same format from a specified directory, optionally filtered by a pattern in the filenames.
Arguments
- path
A character string specifying the directory path where the data files are located.
- file_format
A character string specifying the type of files to import, using a glob pattern (e.g., "*.csv" for CSV files).
- pattern
An optional character string specifying a regex pattern to filter filenames. Default is NULL.
- ...
Additional arguments passed to the
rio::import()function.
Value
A named list where each element is the imported data from a file, with names corresponding to the filenames without the path and file extension.
Examples
## For demo, temp. file paths is created with the file extension .csv
csv_file1 <- tempfile(pattern = "test", fileext = ".csv")
csv_file2 <- tempfile(pattern = "file", fileext = ".csv")
csv_file3 <- tempfile(pattern = "test", fileext = ".csv")
## create CSV files to import
write.csv(head(cars), csv_file1)
write.csv(head(mtcars), csv_file2)
write.csv(head(iris), csv_file3)
## Import all CSV files in the directory
data_list <- import_data(path = tempdir(), file_format = "*.csv")
## Import all CSV files with names containing "test"
data_list <- import_data(path = tempdir(), file_format = "*.csv", pattern = "test")