prep_time_series: Plot code frequency for a datavyu column
In tca2/datavyu: Prepare and Create Output from datavyu Coding Files

Plot code frequency for a datavyu column

prep_time_series(
  column,
  code,
  specified_file = NULL,
  directory = NULL,
  units = "s",
  normalize_ts = FALSE
)

`column`	the column as a character string
`code`	the code as a character string
`specified_file`	the file name; use datavyur::datavyu_col_search() to determine their names
`directory`	the path to the directory as a character string; can be set with options(directory = "")
`units`	the units the data will be prepared in; either "m" (minutes), "s" (default; seconds), or "ms" (milli-seconds)
`normalize_ts`	set to TRUE to normalize the time series