saveRDS inflating size of object

Question

This is a tricky one as I can\'t provide a reproducible example, but I\'m hoping that others may have had experience dealing with this.

Essentially I have a function

Answer 1

For model objects you could also simply delete the reference to the environment.

As for example like this

ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2, 10, 20, labels = c("Ctl","Trt"))
weight <- c(ctl, trt)
lm.D9 <- lm(weight ~ group) 

attr(lm.D9$terms, ".Environment") <- NULL
saveRDS(lm.D9, file = "path_to_save.RDS")

This unfortunatly breaks the model - but you can add an environment manualy after loading again.

readRDS("path_to_save.RDS")
attr(lm.D9$terms, ".Environment") <- globalenv()

This helped me in my specific use case and looks a bit saver to me...