str2str (version 1.0.0)

d2d: Data-Frame to Data-Frame (e.g., factors to character vectors)

Description

d2d converts a data.frame to a modified version of the data.frame. It is used to convert factors, character vectors, and logical vectors to different classes/types (e.g., factors to character vectors).

Usage

d2d(
  d,
  fct = "chr",
  chr = "chr",
  lgl = "int",
  order.lvl = "alphanum",
  decreasing = FALSE,
  na.lvl = FALSE,
  check = TRUE
)

Value

data.frame with the same dim and dimnames as d, but with potentially altered columns which were factors, character vectors, and/or integer vectors.

Arguments

d

data.frame.

fct

character vector of length 1 specifying what factors should be converted to. There are three options: 1) "chr" for converting to character vectors (i.e., factor labels), 2) "int" for converting to integer vectors (i.e., factor codes), or 3) "fct" for keeping the factor as is without any changes.

chr

character vector of length 1 specifying what character vectors should be converted to. There are three options: 1) "fct" for converting to factors (i.e., elements will be factor labels), 2) "int" for converting to integer vectors (i.e., factor codes after first converting to a factor), or 3) "chr" for keeping the character vectors as is without any changes.

lgl

character vector of length 1 specifying what logical vectors should be converted to. There are four options: 1) "fct" for converting to factors (i.e., "TRUE" and "FALSE" will be factor labels), 2) "chr" for converting to character vectors (i.e., elements will be "TRUE" and "FALSE"), 3) "int" for converting to integer vectors (i.e., TRUE = 1; FALSE = 0), and 4) "lgl" for keeping the logical vectors as is without any changes.

order.lvl

character vector of length 1 specifying how you want to order the levels of the factor. The options are "alphanum", which sorts the levels alphanumerically (with NA last); "position", which sorts the levels by the position the level first appears; "frequency", which sorts the levels by their frequency. If any frequencies are tied, then the ties are sorted alphanumerically (with NA last).

decreasing

logical vector of length 1 specifying whether the ordering of the levels should be decreasing (TRUE) rather than increasing (FALSE).

na.lvl

logical vector of length 1 specifying if NA should be considered a level.

check

logical vector of length 1 specifying whether to check the structure of the input arguments. For example, check whether d is a data.frame. This argument is available to allow flexibility in whether the user values informative error messages (TRUE) vs. computational efficiency (FALSE).

Details

d2d internally uses the fct2v and v2fct functions. See them or more details about how column conversions work.

Examples

dat <- data.frame(
"lgl_1" = c(TRUE, FALSE, NA),
"lgl_2" = c(FALSE, TRUE, NA),
"int_1" = c(1L, NA, 2L),
"int_2" = c(2L, NA, 1L),
"dbl_1" = c(1.1, NA, 2.2),
"dbl_2" = c(2.2, NA, 1.1),
"chr_1" = c(NA, "a","b"),
"chr_2" = c(NA, "b","a"),
"fct_1" = factor(c(NA, "one","two")),
"fct_2" = factor(c(NA, "two","one"))
)
str(dat)
x <- d2d(dat); str(x) # default
x <- d2d(dat, fct = "fct", chr = "fct", lgl = "fct"); str(x) # all to factors
x <- d2d(dat, fct = "int", chr = "int"); str(x) # all to integers