On Thu, Sep 2, 2021 at 9:26 PM Enrico Schumann <e...@enricoschumann.net> wrote: > > On Thu, 02 Sep 2021, Luigi Marongiu writes: > > > Hello, is it possible to show only the header (that is: `'data.frame': > > x obs. of y variables:` part) of the str function? > > Thank you > > Perhaps one more solution. You could limit the number > of list components to be printed, though it will leave > a "truncated" message. > > str(iris, list.len = 0) > ## 'data.frame': 150 obs. of 5 variables: > ## [list output truncated]
Or use 'max.level', which is also generally useful for nested lists: str(iris, max.level=0) ## 'data.frame': 150 obs. of 5 variables: Best, -Deepayan > Since 'str' is a generic function, you could also > define a new 'str' method. Perhaps something among > those lines: > > str.data.frame.oneline <- function (object, ...) { > cat("'data.frame':\t", nrow(object), " obs. of ", > (p <- length(object)), > " variable", if (p != 1) "s", "\n", sep = "") > invisible(NULL) > } > > (which is essentially taken from 'str.data.frame'). > > Then: > > class(iris) <- c("data.frame.oneline", class(iris)) > > str(iris) > ## 'data.frame': 150 obs. of 5 variables > > str(list(a = 1, > list(b = 2, > c = iris))) > ## List of 2 > ## $ a: num 1 > ## $ :List of 2 > ## ..$ b: num 2 > ## ..$ c:'data.frame': 150 obs. of 5 variables > > > > > -- > Enrico Schumann > Lucerne, Switzerland > http://enricoschumann.net > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.