improve documentation for tidy methods

NEWS.md

@@ -2,6 +2,8 @@
 
 * Document that `update_role()`, `add_role()` and `remove_role()` are applied before steps and checks. (#778)
 
+* Documentation for tidy methods for all steps has been added when missing and improved to describe the return value more accurately. (#936)
+
 # recipes 1.0.8
 
 ## Improvements

R/BoxCox.R

@@ -33,9 +33,14 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected) and `value` (the
-#' lambda estimate) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, the lambda estimate}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/YeoJohnson.R

@@ -32,9 +32,14 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected) and `value` (the
-#' lambda estimate) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, the lambda estimate}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/arrange.R

@@ -15,12 +15,15 @@
 #'   to embed the value of the object in the expression (to
 #'   be portable between sessions). See the examples.
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#'  `terms` which contains the sorting variable(s) or expression(s) is
-#'  returned. The expressions are text representations and are not
-#'  parsable.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/bin2factor.R

@@ -19,10 +19,15 @@
 #'  density of numeric binary data. Note that the numeric data is
 #'  only verified to be numeric (and does not count levels).
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#'  `terms` (the columns that will be affected) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/bs.R

@@ -25,10 +25,15 @@
 #'  from the data and new columns are added. The naming convention
 #'  for the new variables is `varname_bs_1` and so on.
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#'  `terms` (the columns that will be affected) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' ```{r, echo = FALSE, results="asis"}
 #' step <- "step_bs"

R/center.R

@@ -32,11 +32,16 @@
 #'  argument of `prep.recipe`. `bake.recipe` then applies
 #'  the centering to new data sets using these means.
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#'  `terms` (the selectors or variables selected) and `value` (the means)
-#'  is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value`, and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, the means}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-unsupervised
 #'

R/classdist.R

@@ -42,9 +42,15 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected), `value` (the centroid
-#' of the class), and `class` is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value`, `class` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, location of centroid}
+#'   \item{class}{character, name of the class}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-supervised
 #'

R/classdist_shrunken.R

@@ -40,11 +40,20 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected), `value` (the centroid),
-#' `class`, and `type` is returned. Type has values `"global"`, `"by_class"`,
-#' and `"shrunken"`. The first two types of centroids are in the original units
-#' while the last have been standardized.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value`, `class`, `type`, `threshold` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, the centroid}
+#'   \item{class}{character, name of class variable}
+#'   \item{type}{character, has values `"global"`, `"by_class"`, and `"shrunken"`}
+#'   \item{threshold}{numeric, value of threshold}
+#'   \item{id}{character, id of this step}
+#' }
+#'
+#' The first two types of centroids are in the original units while the last
+#' has been standardized.
 #'
 #' @template case-weights-supervised
 #' @references

R/corr.R

@@ -39,8 +39,13 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#' `terms` (the columns that will be removed) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected to be removed}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' ```{r, echo = FALSE, results="asis"}
 #' step <- "step_corr"

R/count.R

@@ -26,9 +26,14 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected) and `result` (the
-#' new column name) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `result` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{result}{character, the new column names}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/cut.R

@@ -19,6 +19,17 @@
 #'  `step_cut()` will call `base::cut()` in the baking step with
 #'  `include.lowest` set to `TRUE`.
 #'
+#' # Tidying
+#'
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{character, the location of the cuts}
+#'   \item{id}{character, id of this step}
+#' }
+#'
 #' @template case-weights-not-supported
 #'
 #' @examples

R/date.R

@@ -48,6 +48,18 @@
 #'  `terms` (the selectors or variables selected), `value` (the feature
 #'  names), and `ordinal` (a logical) is returned.
 #'
+#' # Tidying
+#'
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value`, `ordinal` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{character, the feature names}
+#'   \item{ordinal}{logical, are factors ordered}
+#'   \item{id}{character, id of this step}
+#' }
+#'
 #' @template case-weights-not-supported
 #'
 #' @examples

R/depth.R

@@ -51,10 +51,16 @@
 #'  replace the original values and by default have the prefix `depth_`. The
 #'  naming format can be changed using the `prefix` argument.
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#'  `terms` (the selectors or variables selected) and `class` is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `class` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{class}{character, name of class variable}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/discretize.R

@@ -259,9 +259,14 @@ print.discretize <-
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#' `terms` (the selectors or variables selected) and `value`
-#' (the breaks) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `value` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{value}{numeric, the breaks}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' ```{r, echo = FALSE, results="asis"}
 #' step <- "step_discretize"

R/dummy.R

@@ -67,9 +67,14 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns `terms`
-#' (the selectors or original variables selected) and `columns` (the list of
-#' corresponding binary columns) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `columns` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{columns}{character, names of resulting columns}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/dummy_extract.R

@@ -31,12 +31,18 @@
 #'
 #' @details
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with columns
-#'  `terms` (the selectors or original variables selected) and `columns`
-#'  (the list of corresponding columns) is returned. The `columns` is
-#'  is ordered according the frequency in the training data set.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `columns` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{columns}{character, names of resulting columns}
+#'   \item{id}{character, id of this step}
+#' }
+#' 
+#' The return value is ordered according to the frequency of `columns` entries in the training data set.
 #'
 #' @template case-weights-unsupervised
 #'

R/dummy_multi_choice.R

@@ -29,6 +29,17 @@
 #' cat(result)
 #' ```
 #'
+#' # Tidying
+#'
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms`, `columns` , and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{columns}{character, names of resulting columns}
+#'   \item{id}{character, id of this step}
+#' }
+#'
 #' @template case-weights-not-supported
 #'
 #' @examples

R/factor2string.R

@@ -15,8 +15,13 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with columns `terms`
-#' (the columns that will be affected) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' @template case-weights-not-supported
 #'

R/filter.R

@@ -17,12 +17,18 @@
 #'  the value of the object in the expression (to be portable
 #'  between sessions). See the examples.
 #'
-#'  # Tidying
+#' # Tidying
 #'
-#'  When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#'  `terms` which contains the conditional statements is returned.
-#'  These expressions are text representations and are not parsable.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
 #'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
+#' 
+#' The expressions in `terms` are text representations and are not parsable.
+#' 
 #' @template case-weights-not-supported
 #'
 #' @family row operation steps

R/filter_missing.R

@@ -22,8 +22,13 @@
 #'
 #' # Tidying
 #'
-#' When you [`tidy()`][tidy.recipe()] this step, a tibble with column
-#' `terms` (the columns that will be removed) is returned.
+#' When you [`tidy()`][tidy.recipe()] this step, a tibble is returned with
+#' columns `terms` and `id`:
+#'
+#' \describe{
+#'   \item{terms}{character, the selectors or variables selected}
+#'   \item{id}{character, id of this step}
+#' }
 #'
 #' ```{r, echo = FALSE, results="asis"}
 #' step <- "step_filter_missing"