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Gets Factor Levels from DATADIC Dataset

Source: R/utils.R
get_factor_levels_datadict.Rd

This function is used to generate the coded levels of FLDNAME using a data dictionary dataset DATADIC() downloaded from <https://adni.loni.usc.edu/data-samples/adni-data/>.

Usage

get_factor_levels_datadict(
  .datadic,
  tbl_name = NULL,
  nested_value = FALSE,
  spliter1 = ";| ;| ; ",
  spliter2 = "=| =| = "
)

Arguments

.datadic

Data dictionary dataset

tbl_name

Table name, Default: NULL that generate for all available TBLNAMEs in the data_dict

nested_value

Unnest the factor level variables in long format if TRUE otherwise nested with CODES variable.

spliter1

First split parameter/pattern, Default:";| ;| ; "

spliter2

Second split parameter/pattern, Default: "=| =| = "

Value

A data.frame that appended with the following variables:

  • prefix: Actual value in the dataset

  • suffix: Coded values from DATADIC()

  • class_type: Class type, "factor"

See also

split_strings()

Other data dictionary related functions: extract_codelist_datadict(), get_factor_fldname()

Examples

if (FALSE) { # \dontrun{
get_factor_levels_datadict(
  .datadic = ADNIMERGE2::DATADIC,
  tbl_name = NULL,
  nested_value = TRUE
)
} # }