R Under development (unstable) (2024-02-25 r85988 ucrt) -- "Unsuffered Consequences"
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> # test.plotmo.R
> # This does a basic sanity test of plotmo.
> # For more comprehensive tests, see plotmo/inst/slowtests.
> library(plotmo)
Loading required package: Formula
Loading required package: plotrix
> library(rpart)
> data(kyphosis)
> rpart.model <- rpart(Kyphosis~., data=kyphosis)
> plotmo(rpart.model, type="vec", trace=1)
stats::predict(rpart.object, data.frame[3,3], type="vec")
stats::fitted(object=rpart.object)
fitted() was unsuccessful, will use predict() instead
got model response from model.frame(Kyphosis ~ Age + Number + Start,
                                    data=call$data, na.action="na.pass")

 plotmo grid:    Age Number Start
                  87      4    13

> 
> proc.time()
   user  system elapsed 
   0.40    0.04    0.43