Checks and sets the positive class for binary classification in a tabular dataset.
Usage
set_positive_class(x, positive_class)
Arguments
- x
Tabular data, i.e. data.frame, data.table, or tbl_df (tibble): Input dataset. The last column will be treated as the outcome variable.
- positive_class
Character scalar: The name of the positive class. Must be one of the levels of the outcome variable.
Value
Tabular data of the same class as x, with the positive class set as the second level of the outcome factor.
Examples
dat <- data.frame(x = rnorm(100), y = factor(sample(c("Case", "Control"), 100, replace = TRUE)))
levels(dat[["y"]])
#> [1] "Case" "Control"
dat <- set_positive_class(dat, "Case")
levels(dat[["y"]])
#> [1] "Control" "Case"
