is.smart: Test For a Smart Object
In VGAM: Vector Generalized Linear and Additive Models

is.smart

R Documentation

Test For a Smart Object

Description

Tests an object to see if it is smart.

Usage

  is.smart(object)

Arguments

object

a function or a fitted model.

Details

If object is a function then this function looks to see whether object has the logical attribute "smart". If so then this is returned, else FALSE.

If object is a fitted model then this function looks to see whether object@smart.prediction or object\$smart.prediction exists. If it does and it is not equal to list(smart.arg=FALSE) then a TRUE is returned, else FALSE. The reason for this is because, e.g., lm(...,smart=FALSE) and vglm(...,smart=FALSE), will return such a specific list.

Writers of smart functions manually have to assign this attribute to their smart function after it has been written.

Value

Returns TRUE or FALSE, according to whether the object is smart or not.

Examples

is.smart(sm.min1)  # TRUE
is.smart(sm.poly)  # TRUE
library(splines)
is.smart(sm.bs)  # TRUE
is.smart(sm.ns)  # TRUE
is.smart(tan)  # FALSE
## Not run: 
udata <- data.frame(x2 = rnorm(9))
fit1 <- vglm(rnorm(9) ~ x2, uninormal, data = udata)
is.smart(fit1)  # TRUE
fit2 <- vglm(rnorm(9) ~ x2, uninormal, data = udata, smart = FALSE)
is.smart(fit2)  # FALSE
fit2@smart.prediction

## End(Not run)

VGAM documentation built on Sept. 18, 2024, 9:09 a.m.