I appreciate the several replies. efac = 2 had already been set in the forest call.
Adding lwd = 2 in the forest call has improved the visibility of the credibility interval. Nathan -----Original Message----- From: "Viechtbauer Wolfgang (STAT)" <wolfgang.viechtba...@maastrichtuniversity.nl> Date: Wednesday, February 12, 2014 at 6:39 AM To: "r-help@R-project.org" <r-help@r-project.org>, "Nathan Leon Pace, MD, MStat" <n.l.p...@utah.edu>, Michael Dewey <i...@aghmed.fsnet.co.uk>, S Ellison <s.elli...@lgcgroup.com> Subject: RE: [R] metafor package >Good advice already from Michael and S Ellison. > >I must apologize for the 'hack-job of a function' called forest() in >metafor. I realized a while ago that people would prefer more >fine-grained control over the various elements of the plot (this has come >up a few times before). I think Paul Murrell described the issue best in >his R Journal article: > >http://journal.r-project.org/archive/2012-2/RJournal_2012-2_Murrell.pdf > >But it is what it is at this point. > >I noticed the problem with the dotted line of the credibility interval >myself a while back. In an updated version of the metafor package (to be >released at some point in the near future), there will at least be the >possibility to control the color of that line. Maybe also the line type >(a dotted line is indeed often too faint). > >You can try changing efac=2 (or something larger than 1) to at least make >the whiskers longer. > >Best, >Wolfgang > >-- >Wolfgang Viechtbauer, Ph.D., Statistician >Department of Psychiatry and Psychology >School for Mental Health and Neuroscience >Faculty of Health, Medicine, and Life Sciences >Maastricht University, P.O. Box 616 (VIJV1) >6200 MD Maastricht, The Netherlands >+31 (43) 388-4170 | http://www.wvbauer.com > > >> -----Original Message----- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] >> On Behalf Of Michael Dewey >> Sent: Wednesday, February 12, 2014 12:50 >> To: Nathan Pace; r-help@R-project.org >> Subject: Re: [R] metafor package >> >> At 22:11 11/02/2014, Nathan Pace wrote: >> >Hi, >> > >> >I have a random effects meta analysis of a proportion (logit >> >transformation) using rma.glmm. >> > >> >I have created a forest plot of the proportion (inverse logic >> >transformation) using forest.rma. >> > >> >I have added the credibility interval. >> > >> >The forest plot is saved as a pdf. >> > >> >The dotted line and whiskers of the credibility interval are too faint. >> > >> >I need help on the argument(s) to widen the credibility interval >> >dots and whiskers. >> > >> >I have looked at the forest.default function, but don't see anything >> >obvious to me. >> >> Dear Nathan >> I think you need to look at forest.rma. There is a fairly obvious >> section (search for addcred). If worst comes to worst you can always >> hack it and save as nathansforest.rma. >> >> >Nathan >> > >> >-- >> >Nathan Pace, MD, MStat >> >Department of Anesthesiology >> >University of Utah >> >801.581.6393 >> >n.l.p...@utah.edu >> > >> > [[alternative HTML version deleted]] >> >> Michael Dewey >> i...@aghmed.fsnet.co.uk >> http://www.aghmed.fsnet.co.uk/home.html ______________________________________________ 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.