>>>>> "Jan" == Jan T Kim <[EMAIL PROTECTED]> >>>>> on Wed, 14 Sep 2005 14:46:20 +0100 writes:
Jan> On Wed, Sep 14, 2005 at 02:49:56PM +0200, Henrik Andersson wrote: >> Jan T. Kim wrote: >> > On Wed, Sep 14, 2005 at 10:14:59AM +0200, Henrik Andersson wrote: >> > >> >>I have used Sweave a lot the latest year, but never really used any long >> >>function calls. >> >> >> >> >> >>If I have code which look like this >> >> >> >>------------------------------------------------------------- >> >>gof <- benthic.flux(ID="Gulf of Finland", >> >> meas.conc=conc, >> >> bw.conc=bw.conc, >> >> time=times, >> >> substance=expression(DIC~(mmol~m^{-3})) >> >> ) >> >>------------------------------------------------------------- >> >> >> >>I get the output by Sweave in my pdf file, like this: >> >> >> >>--------------------------------------------------------------- >> >> > gof <- benthic.flux(ID = "Gulf of Finland", meas.conc = conc, >> >>+ bw.conc = bw.conc, time = times, substance = expression(DIC ~ >> >>+ (mmol ~ m^{ >> >>+ -3 >> >>+ }))) >> >>---------------------------------------------------------------- >> >> >> >>I can understand that it will not look exactly as entered but why is the >> >>'-3' on a line of it's own? >> >> >> >>Can anyone suggest a idea to how I can make this more readable. >> > >> > >> > It seems you've been thinking LaTeX rather than R ;-) : >> > The exponent "-3" in the expression should be enclosed by parentheses >> > rather than by curly braces. >> > >> > The code formatting done by the print method inserts the newline after >> > "{" and before "}". >> > >> > Best regards, Jan >> >> If you look at demo(plotmath), I get the impression that m^(-3) does not >> give me the desired behavior. >> >> I want to have -3 in superscript without visible parentheses. >> >> Tricky! Jan> Ok, I see. Jan> It seems to me that you could omit the curly braces in the example, I Jan> don't see any differences between the title in the plots produced by Jan> plot(1:10, main = expression(DIC~(mmol~m^-3))) Jan> and Jan> plot(1:10, main = expression(DIC~(mmol~m^{-3}))) Jan> For more complex exponents, you could try plain() to prevent them from Jan> being wrongly grouped by operator precedence, as in Jan> plot(1:10, main = expression(DIC~(mmol~m^plain(-3 + t)))) neat idea, but Jan> Not exactly ideal for readability, however... indeed. And really only a workaround: You shouldn't have to uglify your R code in order to work around Sweave "pecularities". Martin ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html