[R] Printing upon calling a function

Steven Yen @tyen @end|ng |rom ntu@edu@tw
Mon Nov 30 09:14:35 CET 2020

I hope I can get away without presenting a replicable set of codes 
because doing so would impose burdens.

I call a function which return a data frame, with the final line


In one case the data frame gets printed (similar to a regression 
printout), with simply a call


In another case with a similar function, I could not get the results 
printed and the only way to print is to do the following:

v<-me.oprobit(obj); v

This is a puzzle, and I hope to find some clues. Thanks to all.

My function looks like the following:

me.oprobit0 <- function(obj,mean=FALSE,vb.method,jindex=NA,
return(out) # out is a data frame

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