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...t; with the greek Sigma letter) -)in the top plots I need to write the "variable=median+-stddeviation (units)" in a more "readable" way: some characters overlap and I want to approximate the numebrs to the second decimal digit. This is how I have been trying so far: text(min(mchain[1,]),max(ndensity$y),substitute( Log(Surface)[med] ==nmed%+-%nstd,list(nmed=nmed,nstd=nstd) ),pos=4 ) -) plot (c): ticks, annotations and labels overlap, but they shouldn't. Here is the code: persp(d,col=fcol,zlim=zlim,theta=theta,phi=phi,zlab="density",xlab=xlab,ylab=ylab,main=&q...

...-------------------------- dev.off() ----------------------------- Here are my problems: -) xlab=expression(paste(lambda,"(",~mu,m,")")) : it correctly prints the "mu" greek letter but it fails for the "lambda" letter, leaving a blank space -) text(min(mchain[2,]),max(tdensity$y),substitute( T[disk,med] == tmed %+-% tstd (K),list(tmed=tmed,tstd=tstd)),pos=4,cex=1.5 ) : it prints everything, but the "+-" symbol and "(K)" overlap with the substitute for tmed and tstd respectively. How can I force a blank space between numbers and...