On 02/03/2017 8:37 AM, Hugh Morgan wrote:
Hi All,I am having trouble outputting ggplot2 graphics to pdf as part of a script. It works if when I pipe the script into R or if I type the commands directly into the terminal, but not if I load it using the source(..) command. In this case the outputted pdf is always size 3611, and it fails to open with the error "This document contains no pages". As an example I wrap the create pdf commands around the 1st example in ?ggplot: $ cat test.R library(ggplot2) pdf("test.pdf") df <- data.frame( gp = factor(rep(letters[1:3], each = 10)), y = rnorm(30) ) ds <- plyr::ddply(df, "gp", plyr::summarise, mean = mean(y), sd = sd(y)) ggplot(df, aes(gp, y)) + geom_point() + geom_point(data = ds, aes(y = mean), colour = 'red', size = 3) dev.off() Piping it into R works: $ R --no-save < test.R ... $ ll test.pdf -rw-rw-r-- 1 user group 4842 Mar 2 13:18 test.pdf This file opens fine and has a graphic. If I repeat the process using source(): $ R --no-save R version 3.3.2 (2016-10-31) -- "Sincere Pumpkin Patch" ... > source("test.R") > $ ll test.pdf -rw-rw-r-- 1 user group 3611 Mar 2 13:25 test.pdf This file fails to open, and always has the size 3611. Any help appreciated,
ggplot2 graphics only appear when they are printed. By default source("test.R") won't print anything. Set print.eval = TRUE (or echo = TRUE) to get it to print.
Duncan Murdoch ______________________________________________ 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.
