Re: [R] by Function Result Factor Levels

2015-09-16 Thread David L Carlson
10 24 43 6B H 13 17 28 - David L Carlson Department of Anthropology Texas A&M University College Station, TX 77840-4352 -Original Message- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf O

Re: [R] by Function Result Factor Levels

2015-09-16 Thread Dario Strbenac
Good day, Yes, exactly. I found that aggregate is another alternative which doesn't require a package dependency, although the column formatting is less suitable, always prepending x. aggregate(warpbreaks[, 1], warpbreaks[, 2:3], function(breaks) c(Min = min(breaks), Med = median(breaks), Max

Re: [R] by Function Result Factor Levels

2015-09-15 Thread William Dunlap
Do you want something like the following? > library(dplyr, quietly=TRUE, warn.conflicts=FALSE) > warpbreaks %>% group_by(wool, tension) %>% summarize(Min=min(breaks), > Median=median(breaks), Max=max(breaks)) Source: local data frame [6 x 5] Groups: wool wool tension Min Median Max 1A

[R] by Function Result Factor Levels

2015-09-15 Thread Dario Strbenac
Good day, How is it possible to get a data.frame of factor levels used for obtaining each element of the result of the by function ? For example, result <- by(warpbreaks[, 1], warpbreaks[, -1], summary) > result wool: A tension: L Min. 1st Qu. MedianMean 3rd Qu.Max. 25.00 26.0