Dear R helpers, Is there a way to display mathematical notations (e.g. greek characters, subscripts) properly in study (studlab) and group (byvar) labels in a forest plot created using the meta package?
#Example: library(meta) logHR <- log(runif(10,0.5,2)) selogHR <- log(runif(10,0.05,0.2)) study=c(0.1,.2,.3,.4,.5,0.1,.2,.3,.4,.5) group=c(rep('alpha',5),rep('beta',5)) meta1=metagen(logHR, selogHR, sm="HR",studlab=paste("Fixed",expression(beta[w]),study),byvar=group) forest(meta1, print.byvar=F) Question 2 Is there a way to add a line to this plot at my preferred location? For example, I want to add a within-group combined estimate line (the default here is just an overall group line by random or fixed effects). I know I need to use grid.lines, e.g. grid.lines(x = 3, y = c(0.5,1),gp = gpar(col = 5)) But for the life of me I can't work out the co-ordinate system in grid graphics! Thank you for ANY help or tips! I've run out of things to try :( Eleni Eleni Rapsomaniki Research Associate/Statistics, PhD Clinical Epidemiology Group Department of Epidemiology and Public Health University College London Medical School ______________________________________________ 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.