Thank you very much for the detailed explanations, and sorry for being vague in my question.
"atop" is what I needed :) Sebastien On Thu, Aug 25, 2011 at 11:59 AM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Aug 25, 2011, at 11:23 AM, Sébastien Vigneau wrote: > > Hi, >> >> I would like to add a two-lines label consisting of: >> "Delta word1\n >> word2" >> (with Delta being the actual greek letter). >> > > But you are not saying how word1 and word2 are supposed to be positioned > relative to each other and to Delta. > > > >> However, when I try "expression(paste(Delta,"**word1\nword2"))", I obtain >> the >> following display: >> "word1\n >> Delta word2". >> >> Do you have any idea on how to obtain the desired display? >> > > \n does not get interpreted in plotmath expressions [as the help(plotmath) > page states explicitly], but as your example shows [to my complete surprise] > if you have then inside text they will get interpreted . Take a look at > atop() and over(). > > Perhaps: > > plot(1,1,main=expression(over(**Delta~word1, word2))) > > If you don't mean the ratio of change in word1 per word2, then this also > gives another possible answer to your vague question. > > expression(atop(Delta~word1, word2)) > > and yet a third: > > plot(1,1,main=expression(**Delta~over(word1, word2))) > > By the way the paste is entirely unneeded there. Using * and ~ as > connectors helps keep these expression more readable. Comma then separate > arguments for "important" plotmath functions. > > -- > > David Winsemius, MD > West Hartford, CT > > [[alternative HTML version deleted]]
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