drop_nodes: Drop a node from an FFT definition

In FFTrees: Generate, Visualise, and Evaluate Fast-and-Frugal Decision Trees

Drop a node from an FFT definition

Description

drop_nodes deletes one or more nodes from an existing FFT definition (by removing the corresponding rows from the FFT definition in the tidy data frame format).

When dropping the final node, the last remaining node becomes the new final node (i.e., gains a second exit).

Duplicates in nodes are dropped only once (rather than incrementally) and nodes not in the range 1:nrow(fft) are ignored. Dropping all nodes yields an error.

drop_nodes is the inverse function of select_nodes. Inserting new nodes is possible by add_nodes.

Usage

drop_nodes(fft, nodes = NA, quiet = FALSE)

Arguments

fft	One FFT definition (as a data frame in tidy format, with one row per node).
nodes	The FFT nodes to drop (as an integer vector). Default: nodes = NA.
quiet	Hide feedback messages (as logical)? Default: quiet = FALSE.

Value

One FFT definition (as a data frame in tidy format, with one row per node).

See Also

add_nodes for adding nodes to an FFT definition; edit_nodes for editing nodes in an FFT definition; select_nodes for selecting nodes in an FFT definition; get_fft_df for getting the FFT definitions of an FFTrees object; read_fft_df for reading one FFT definition from tree definitions; add_fft_df for adding FFTs to tree definitions; FFTrees for creating FFTs from and applying them to data.

Other tree definition and manipulation functions: add_fft_df(), add_nodes(), edit_nodes(), flip_exits(), get_fft_df(), read_fft_df(), reorder_nodes(), select_nodes(), write_fft_df()

FFTrees documentation built on June 7, 2023, 5:56 p.m.