README.md
In dunlin: Preprocessing Tools for Clinical Trial Data

`dunlin`: Tools for Clinical Trial Data Wrangling

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dunlin provides a variety of data tools to reformat and manipulate a subset of the tables in a data set.

# install.packages("pak")
pak::pak("insightsengineering/dunlin@*release")

Alternatively, you might also use the development version.

# install.packages("pak")
pak::pak("insightsengineering/dunlin")

```r library(dunlin)

df1 <- data.frame( "id" = c("a", "b", NA, "a", "k", "x"), "id2" = factor(c("f1", "f2", NA, NA, "f1", "f1")), "val" = letters[1:6] ) df2 <- data.frame( "id" = c("a", "b", NA, "a", "k", "x"), "id2" = factor(c("f1", "f2", NA, NA, "f1", "f1")), "num" = 1:6 )

db <- list(df1 = df1, df2 = df2)

prop_db <- propagate(db, "df1", "val", c("id", "id2")) ```

which returns prop_db as

```text $df1 id id2 val 1 a f1 a 2 b f2 b 3 c 4 a d 5 k f1 e 6 x f1 f

$df2 id id2 num val 1 a f1 1 a 2 b f2 2 b 3 3 c 4 a 4 d 5 k f1 5 e 6 x f1 6 f ```

```r new_format <- list( df1 = list( id = rule("No ID available" = c("", NA, "")), id2 = rule("" = c("", NA, "")) ) )

res <- reformat(prop_db, new_format, .na_last = TRUE)

```

which result in res as

```text $df1 id id2 val 1 a f1 a 2 b f2 b 3 No ID available c 4 a d 5 k f1 e 6 x f1 f

$df2 id id2 num val 1 a f1 1 a 2 b f2 2 b 3 3 c 4 a 4 d 5 k f1 5 e 6 x f1 6 f ```