This is your answer: > str(hold) Classes 'summaryDefault', 'table' Named num [1:6] -2.602 0.636 1.514 1.54 2.369 ... ..- attr(*, "names")= chr [1:6] "Min." "1st Qu." "Median" "Mean" ...
hold is a table of named numbers, i.e. a vector with a names attribute. It is not a data.frame so it does not have column names. The error message sort of tells you this when it says hold is an atomic vector (i.e. not a list or a data frame which are built from other objects such as vectors). David Carlson Anthropology Department Texas A&M University ________________________________________ From: R-help <r-help-boun...@r-project.org> on behalf of Evan Cooch <evan.co...@gmail.com> Sent: Friday, March 31, 2017 6:11 PM To: r-help@r-project.org Subject: [R] pull stat out of summary Continuing my learning curve after 25_ years with using SAS. Want to pull the "Mean" forom the summary of something... test <- rnorm(1000,1.5,1.25) hold <- summary(test) names(hold) [1] "Min." "1st Qu." "Median" "Mean" "3rd Qu." "Max." OK, so "Mean" is in there. So, is there a short form answer for why hold$Mean throws an error, and hold["Mean"} returns the mean (as desired)? Silly question I know, but gotta start somewhere... Thanks... ______________________________________________ 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.
