Hi Paul, Rolf I do not know how legal this is but this works if you have spaces around the ultimate plot due to changes in layout Changing the layout parameters removes the unwanted space.
ap = dotplot(variety ~ yield | year * site, data=barley,layout = c(2,6)) apm = ap[1:2,3:4] apm$layout <- c(2,2) apm Regards Duncan Duncan Mackay Department of Agronomy and Soil Science University of New England Armidale NSW 2350 -----Original Message----- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Paul Murrell Sent: Friday, 27 April 2018 11:28 To: Rolf Turner Cc: r-help@r-project.org; deepayan.sar...@r-project.org Subject: Re: [R] [FORGED] Extracting specified pages from a lattice ("trellis") object. Hi Does this not do what you want ... ? allpages <- dotplot(variety ~ yield | year * site, data=barley, layout=c(2,2)) page2 <- allpages[1:2, 3:4] print(page2) Paul On 24/04/18 17:51, Rolf Turner wrote: > > On 24/04/18 15:17, Paul Murrell wrote: > >> Hi >> >> I think the subsetting works by giving you the panels for the >> corresponding levels of the conditioning variable(s). Note that, if >> there is more than one conditioning variable, you will need more than >> one subsetting index. >> >> For example, taking this plot with two conditioning variables and 12 >> panels in total ... >> >> dotplot(variety ~ yield | year * site, data=barley) >> >> ... this produces three pages ... >> >> dotplot(variety ~ yield | year * site, data=barley, >> layout=c(2,2)) >> >> ... and this produces the second page (both panels for the first >> conditioning variable and the third and fourth panels for the second >> conditioning variable) ... >> >> dotplot(variety ~ yield | year * site, data=barley, >> layout=c(2,2))[1:2, 3:4] >> >> Hope that helps. > > Hmm. Thanks Paul. I may be able to work with that. But what I really > wanted was to take > > bar <- dotplot(variety ~ yield | year * site, data=barley) > > and then do (something like) > > foo <- bar[<something>] > > so that foo contains only the second page of bar, and then do print(foo) > to get a plot of (just) the second page. Without re-issuing a > (modified) plot command. > > Is that not at all possible? > > cheers, > > Rolf. > -- Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 p...@stat.auckland.ac.nz http://www.stat.auckland.ac.nz/~paul/ ______________________________________________ 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.
