[R] Add encoded special characters (greek characters) as text to plot

[heyi xiao]

Thank you all for the input. That helps, although I haven’t get the exact solution..

--------------------------------------------
On Thu, 12/18/14, Chel Hee Lee <chl948 at mail.usask.ca> wrote:

 Subject: Re: [R] Add encoded special characters (greek characters) as text to plot
 To: "Jeff Newmiller" <jdnewmil at dcn.davis.ca.us>, "heyi xiao" <xiaoheyiyh at yahoo.com>, "heyi xiao via R-help" <r-help at r-project.org>
 Date: Thursday, December 18, 2014, 3:43 PM

 Why don't you try
 this approach if you cannot use 'expression()'?

  > x <-
 c("alpha", "beta", "gamma",
 "delta")
  > plot(0,
 type="n")
  > for(i in
 1:length(x)) text(x=1, y=i/10, labels=parse(text=x[i]))

 Please see the output in R. 
 Is this what you are looking for?  I hope 
 this helps.  I would also appreciate it if you
 would provide 
 reproducible examples next
 time.

 Chel Hee Lee

 On 12/18/2014 11:48 AM, Jeff
 Newmiller wrote:
 > Read the posting
 guide. The solution is likely to depend on your operating
 system and graphics devices.
 >
 ---------------------------------------------------------------------------
 > Jeff Newmiller                 
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    .....  Go Live...
 >
 DCN:<jdnewmil at dcn.davis.ca.us> 
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 Go...
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 > Research Engineer
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 > Sent from my phone. Please excuse my
 brevity.
 >
 > On
 December 18, 2014 8:59:47 AM PST, heyi xiao via R-help
 <r-help at r-project.org>
 wrote:
 >> anybody has any hint on
 this?
 >>
 >>
 --------------------------------------------
 >>
 >>
 >> Subject: Add encoded special
 characters (greek characters) as text to
 >> plot
 >> To: r-help at r-project.org
 >> Date: Wednesday, December 17, 2014,
 9:25 PM
 >>
 >>
 Dear all,
 >> I read my a character
 matrix from a text file. Some of them
 >> have greek characters. To reserve the
 special characters, I
 >> used
 stringsAsFactors=F using read.table. I notice that I
 >> can’t print these character string
 using print(), but I
 >> can use
 cat():
 >>>
 print("LC\246\302")
 >> [1]
 "LC\246\302"
 >>>
 cat("LC\246\302\n")
 >>
 LCβ
 >>
 >> The
 problem is when I add text to my output plot like:
 >> text(x,y,
 labels="LC\246\302")
 >>
 >> I got "LC.. " on my plot.
 Obviously text function doesn’t
 >>
 know what’s "\246\302". I google that encoding,
 and
 >> can’t find exact what that
 is. It doesn’t look like
 >> ascii or
 Unicode. Anybody knows what that is?
 >> Note that I can’t use expression()
 method to pass these
 >> special
 characters because these are read from a text file,
 >> I just can’t include greek
 characters manually that way.
 >> Is
 there a way that I can output these strings with special
 >> characters automatically?
 >> Thank you!
 >>
 Heyi
 >>
 >>
 ______________________________________________
 >> R-help at r-project.org
 mailing list -- To UNSUBSCRIBE and more, see
 >> https://stat.ethz.ch/mailman/listinfo/r-help
 >> PLEASE do read the posting guide
 >> http://www.R-project.org/posting-guide.html
 >> and provide commented, minimal,
 self-contained, reproducible code.
 >
 >
 ______________________________________________
 > R-help at r-project.org
 mailing list -- To UNSUBSCRIBE and more, see
 > https://stat.ethz.ch/mailman/listinfo/r-help
 > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
 > and provide commented, minimal,
 self-contained, reproducible code.
 >