More specifically, the "juxtapose" feature [i.e. "*" or "paste"] produces extra white space when using the "CM Roman" font family. With other families [e.g. "CenturySch"] it works fine. An issue of R [using 3.0.2]? Or invalid font source file?
A MWE [note unwanted white space after the first "sin"]:
library(extrafont)
postscript(file="example.eps",heigh=5,width=5,fonts=c("CM Roman","CenturySch"))
plot(2,type="n")
text(1,2, expression( "sin"*(e^{-italic(t)} )),family="CM Roman", cex=2 )
text(1,1.5,expression( "sin"*(e^{-italic(t)} )),family="CenturySch",cex=2 )
dev.off()
unwanted white space after the first "sin":
Thank you for any response.
M.
