Regarding your question: Do you want *another* line or do you just want to move the reference line to the value of the summary estimate? The latter can be done by passing the value of the summary estimate to the 'refline' argument. If you want another line, you could just use the abline function, or, for finer control, the segments function. Something like:
segments(coef(res), 0, coef(res), res$k, lty="dashed") where 'res' is the name of the fitted model object. You may have to play around with the 0 and res$k values, so that the line has the 'correct' length. Thanks for the positive feedback about the package. 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 ________________________________________ From: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of johnwilli...@fas.harvard.edu [johnwilli...@fas.harvard.edu] Sent: Thursday, December 12, 2013 6:49 AM To: r-help@r-project.org Subject: [R] refline in forest() {metafor} Hello all, I am using forest.rma to plot a random effects model meta-analysis. I noticed that refline sets a vertical line indicating the null hypothesis. Is there a way to draw another vertical line, possibly dashed, centered on the summary estimate? Prof. Viechtbauer, if you happen to read this, I'd like to thank you for making an excellent package. I have been using the metafor package to do my first meta-analysis, having never used R before. The documentation is thorough and intuitive. Thanks, John John Williams ALB Candidate Harvard University Extension School johnwilli...@fas.harvard.edu ______________________________________________ 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.
