generate_case_when_trees: Generate trees

In tidypredict: Run Predictions Inside the Database

Generate trees

Description

Each tree is generated as a flat tree with each node being a seperate part of the case when. This means that the following tree:

Usage

generate_case_when_trees(parsedmodel, default = TRUE)

Details

        +-----+
   +----|x > 0|----+
   |    +-----+    |
   v               v

+——+ +——–+ +–|y < 20|–+ +–|z <= 10 |–+ | +——+ | | +——–+ | v v v v a b c d

will be turned into the following case_when() statement.

case_when(
  x >  0 & y <  20 ~ "a",
  x >  0 & y >= 20 ~ "b",
  x <= 0 & z <= 10 ~ "c",
  x <= 0 & z >  10 ~ "d"
)

instead of a nested case_when()s' like this

case_when(
  x >  0 ~ case_when(
             y <  20 ~ "a",
             y >= 10 ~ "b"
           ),
  x <= 0 ~ case_when(
             z <= 10 ~ "c",
             z >  10 ~ "d"
           )
)

The functions in this file generates these tree. generate_case_when_tree() generates a single tree with generate_case_when_trees() being a convinience wrapper for multiple trees.

generate_tree_node() generates the expressions for each a single ndoe in the tree, where generate_tree_nodes() is a convinience wrapper for calculating all notes.

tidypredict documentation built on Nov. 29, 2025, 9:06 a.m.