Hi, thanks to everybody for pointing the issue and their kind answers. I
appreciated, it is solved.
x11<-data.frame(A=c(.6,.6,.6),B=c(.20,.20,.20),C=c(0.20,.20,.20))
ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend= c(.30,.50,.0),zend
=c(.0,.50,0.3)))+
geom_point()+
theme_showarrows()+geom_segment(size=.5)+
geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=c("P[a]","P[b]","P[c]"),parse=TRUE)
My best regards,
Levent.
________________________________________
Kimden: peter dalgaard [pda...@gmail.com]
Gönderildi: 04 Aralık 2017 Pazartesi 17:23
Kime: Eik Vettorazzi
Bilgi: Levent TERLEMEZ; R-help@r-project.org
Konu: Re: [R] ggtern and bquote...
D'oh! Thanks for pointing this out. I blame caffeine depletion at the time...
-pd
> On 4 Dec 2017, at 15:48 , Eik Vettorazzi <e.vettora...@uke.de> wrote:
>
> reading ?plotmath you might notice that "_" isn't the propper syntax for
> subscripts. This will work:
>
> ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend =
> c(.30,.50,.0),zend =c(.0,.50,0.3)))+
> geom_point()+
> theme_showarrows()+geom_segment(size=.5)+
> geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=c("P[a]","P[b]","P[c]"),
> parse=TRUE)
>
> cheers.
>
> Am 04.12.2017 um 15:37 schrieb Levent TERLEMEZ via R-help:
>> Hi,
>>
>> My example code is this;
>>
>> x11<-data.frame(A=c(.6,.6,.6),B=c(.20,.20,.20),C=c(0.20,.20,.20))
>> ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend = c(.30,.50,.0),zend
>> =c(.0,.50,0.3)))+
>> geom_point()+
>> theme_showarrows()+geom_segment(size=.5)+
>>
>> geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=as.expression("P_a","P_b","P_c"))
>>
>> ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend = c(.30,.50,.0),zend
>> =c(.0,.50,0.3)))+
>> geom_point()+
>> theme_showarrows()+geom_segment(size=.5)+
>>
>> geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=as.expression(quote(c("P_a","P_b","P_c"))))
>>
>> In geom_text_viewport (I also tried geom_label and geom_text versions) tried
>> all possible solutions, but i couldn't achieved. R command outputs are like
>> this:
>>
>> Error in stats::complete.cases(df[, vars, drop = FALSE]) :
>> invalid 'type' (expression) of argument
>>
>>
>> Maybe i am writing the code wrong, i couldn't figure out.
>>
>> Thanks for your kind answers.
>>
>>
>>
>> ________________________________________
>> Kimden: Martin Maechler [maech...@stat.math.ethz.ch]
>> Gönderildi: 04 Aralık 2017 Pazartesi 16:16
>> Kime: peter dalgaard
>> Bilgi: Levent TERLEMEZ; R-help@r-project.org
>> Konu: Re: [R] ggtern and bquote...
>>
>>>>>>> peter dalgaard <pda...@gmail.com>
>>>>>>> on Mon, 4 Dec 2017 14:55:19 +0100 writes:
>>
>>>> On 4 Dec 2017, at 11:58 , Levent TERLEMEZ via R-help
>>>> <r-help@r-project.org> wrote:
>>>>
>>>> Dear Users,
>>>>
>>>> What is the proper way to write symbol, superscript,
>>>> subscript in ggtern/ggplot? I tried every given example,
>>>> every possible features of ggplot but couldn’t achived. I
>>>> just want to write P_a, sigma^2, etc, would you please
>>>> advise me about this problem.
>>
>>> Did you try expression(P_a)? I don't do much gg-stuff, but
>>> I seem to recall that quote() doesn't quite cut it the way
>>> it does in base graphics.
>>
>>> -pd
>>
>> Yes, I vaguely remember that indeed also for the lattice package
>> (which is based on 'grid' the same as 'ggplot2' is ..) sometimes
>> expressions instead of calls are needed, i.e., expression(*)
>> instead of just quote(*).
>>
>> However, I think Levent really meant what you'd get by
>> expression(P[a]) ?
>>
>> @Levent: The clue is the need for valid R syntax, and indeed, as
>> in LaTeX x_i often is the i-th element of x, the R syntax for
>> indexing/subsetting is used here, i.e.
>> x[i] for LaTeX x_i
>>
>>
>> Last but not least, if Levent really needs bquote() [i.e. substitute()]
>> then, a final
>> as.expression(.)
>> may be needed :
>>
>> identical(as.expression(quote(a == 1)),
>> expression( a == 1)) # --> TRUE
>>
>> --
>> Martin Maechler, ETH Zurich
>>
>>
>> ________________________________
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>
> --
> Eik Vettorazzi
>
> Department of Medical Biometry and Epidemiology
> University Medical Center Hamburg-Eppendorf
>
> Martinistrasse 52
> building W 34
> 20246 Hamburg
>
> Phone: +49 (0) 40 7410 - 58243
> Fax: +49 (0) 40 7410 - 57790
> Web: www.uke.de/imbe
> --
>
> _____________________________________________________________________
>
> Universitätsklinikum Hamburg-Eppendorf; Körperschaft des öffentlichen Rechts;
> Gerichtsstand: Hamburg | www.uke.de
> Vorstandsmitglieder: Prof. Dr. Burkhard Göke (Vorsitzender), Prof. Dr. Dr.
> Uwe Koch-Gromus, Joachim Prölß, Martina Saurin (komm.)
> _____________________________________________________________________
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk Priv: pda...@gmail.com
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