-----Original Message----- From: Struckmeier, Nathanael Sent: Friday, May 27, 2011 1:39 PM To: 'stephen's mailinglist account' Subject: RE: [R] Unable to Plot using headers.
Thanks for the input. Despite both graphing directly and with "attach" I am still getting a screwed up graphical output as well as an error. My table is object "demand" w/ columns Date and Qty Plot(demand$Qty, demand$Date) Attach(demand) Plot(Qty, Date) Both of these commands produce something completely different (and quite odd) from a simple xy scatter. X-axis should be "date" and Y-axis should be "Qty". The table "demand" was imported into R sorted by date. Upon graphing, the X-axis displays dates but they are out of order and the graph is a black box... -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of stephen's mailinglist account Sent: Friday, May 27, 2011 12:39 PM To: Jonathan Daily Cc: R-help@r-project.org Subject: Re: [R] Unable to Plot using headers. On 27 May 2011 20:25, Jonathan Daily <biomathjda...@gmail.com> wrote: > I would caution against using attach(), however, if you are not in an > interactive session. In functions and scripts, errors can often cause > the interpreter to exit before the detach(), leaving your data on the > search path. 99% of all attach/detach cases can be handled by ?with > and ?within. The issue with attach can be seen in this example: > > dat <- data.frame(a = 1, b = 2) > > test <- function(x){ > attach(dat) > if(x) stop("STOP") > print(a) > print(b) > detach(dat) > } > > a > test(F) > a > > a > test(T) > a > > fair point I tend to opt for the dat$a or dat$b form personally anyway, but was defaulting back to some of the instructional texts I read early on. -- Stephen ______________________________________________ R-help@r-project.org mailing list 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 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.