parseMetadata: Parse factors found in filenames or strings.
In matthewkling/ecoclim: Tools for common EcoClim data operations

This function parses a vector of strings, returning a data frame of factors found in those strings. It takes a folder path (or alternatively a character vector) as input, and it returns a data frame with a row for each file in the folder (or for each item in the vector) and columns containing matched factors.

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parseMetadata(paths, is.dir = T, variables = NULL, keys = NULL,
  recursive = T, drops = NULL, skips = NULL, pattern = NULL,
  simplify = T)

`paths`	A character vector of complete file directory paths.
`is.dir`	Logical indicating whether path is a file directory, or just a vector of character strings to parse.
`variables`	Optional character vector selecting the subset of default keys titles to employ.
`keys`	A list of named character vectors, representing variable title and factors.
`recursive`	Logical indicating whether subdirectories should be searched.
`drops`	A character vector of path patterns that will cause that path to be dropped from results.
`skips`	A character vector of path patterns to ignore during matching, typically used if folder names contain factor patterns.
`pattern`	A character indicating a seach pattern to match in file paths. All files not containing this path will be ignored.
`simplify`	Logical indicating whether columns with all NA values should be removed from result.