Thanks Jeff for the Help. it works correctly. Regards, Frederic.
Frederic Ntirenganya Maseno University, African Maths Initiative, Kenya. Mobile:(+254)718492836 Email: fr...@aims.ac.za https://sites.google.com/a/aims.ac.za/fredo/ On Sun, Dec 14, 2014 at 11:13 AM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > > The abline function is part of base graphics (read the help ?abline... it > is part of the "graphics" package). > > The xyplot function is part of the lattice package... a clone of the > original "trellis" package from the S software. The two approaches to > graphics don't play well together. > > Once you know to keep this distinction in mind, you can probably find > examples on the web, such as [1], or in help files such as ?panel.abline. > > [1] http://apcg.uoregon.edu/GeogR/topics/lattice.htm > > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live > Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > On December 13, 2014 11:05:52 PM PST, Frederic Ntirenganya < > ntfr...@gmail.com> wrote: > >Hi All, > > > >I would like to have an idea of how I can solve this error. > > > >I am getting the following error in plotting: > > > >> abline(regn,col='red',lwd=1.5 , data=BUTemp) > >Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : > > plot.new has not been called yet > > > >This is the str of my data set > > > >> str(BUTemp) > >'data.frame': 7671 obs. of 6 variables: > > $ Year : int 1971 1971 1971 1971 1971 1971 1971 1971 1971 1971 ... > >$ Month: Factor w/ 12 levels "Aug","Sep","Oct",..: 2 2 2 2 2 2 2 2 2 2 > >... > > $ Day : int 1 2 3 4 5 6 7 8 9 10 ... > > $ Rain : num 0 0 0 0 0 0 0 0 0 0 ... > > $ Tmax : num 24.3 25 25.6 26.5 27.8 27.5 25.7 25.1 26.5 25.1 ... > > $ Tmin : num 13.5 13.2 12.7 12.7 12.2 14 13.2 12.3 12.8 11.7 ... > > > >The code I am using is : > > > >require(latticeExtra) # trellis plot for temperature and rain. > >require(lattice) > > > >levels(BUTemp$Month) <- c("Aug", "Sep", "Oct", "Nov", "Dec", "Jan", > > "Feb", "Mar", "Apr", "May", "Jun", "Jul") > > > >xyplot(BUTemp$Tmin + BUTemp$Tmax ~ BUTemp$Year | BUTemp$Month, > > data =BUTemp , type = "b", pch=19) > > > >regn=lm(BUTemp$Tmin + BUTemp$Tmax ~ BUTemp$Year) > > > >abline(regn,col='red',lwd=1.5) > >summary(regn) > > > >Thanks for your help. > > > >Regards, > >Frederic. > >Frederic Ntirenganya > >Maseno University, > >African Maths Initiative, > >Kenya. > >Mobile:(+254)718492836 > >Email: fr...@aims.ac.za > >https://sites.google.com/a/aims.ac.za/fredo/ > > > > [[alternative HTML version deleted]] > > > >______________________________________________ > >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. > > [[alternative HTML version deleted]] ______________________________________________ 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.
