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Generate a string with all interactions of a certain degree, to be used in a GAM formula

Source: R/evppi_gam.R
all_interactions.Rd

Generate a string with all interactions of a certain degree, to be used in a GAM formula

Usage

all_interactions(x, degree = 2)

Arguments

x

Character vector of variable names

degree

Maximum interaction degree

Value

A string looking like the right hand side of a GAM formula with tensor product interactions.

For example, if x is c("x1","x2","x3"), then all_interactions(x, degree=2) should return

"te(x1,x2) + te(x1,x3) + te(x1,x3)"

Examples

x <- c("x1","x2","x3")
all_interactions(x, 2)
#> [1] "te(x1,x2) + te(x1,x3) + te(x2,x3)"