R help - Feb 2013 - mtext unicode failure

Readers,

How to solve this unicode input error please?
>
postscript("~/tmp/test.eps",width=100/25.4,height=100/25.4,horizontal=FALSE,onefile=TRUE,paper="special")
> testx<-seq(1:5)
> testy<-seq(1:5)
> plot(testy~testx)
> mtext('text (O?)\n more text',side=3,line=1)
Warning messages:
1: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <e2>
2: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
3: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
4: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <e2>
5: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
6: In mtext("text (O?)\n more text", side = 3, line = 1) :
  conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>

If the command to print to postscript is omitted, a graph is viewed
successfully, with the title text:

text(O?)
more text

Thanks.

--
r2151

On 18/02/2013 14:15, e-letter wrote:
> Readers,
>
> How to solve this unicode input error please?
On what system, in what locale?  And where is Unicode mentioned?

If you intended a subscript 2, use plotmath. That is not a character in 
the standard Postscript fonts, nor is in the encoding you selected.  We 
don't know what that is since it depends on your locale: see ?postscript.

Or use the cairo_ps device.
>
>>
postscript("~/tmp/test.eps",width=100/25.4,height=100/25.4,horizontal=FALSE,onefile=TRUE,paper="special")
>> testx<-seq(1:5)
>> testy<-seq(1:5)
>> plot(testy~testx)
>> mtext('text (O?)\n more text',side=3,line=1)
> Warning messages:
> 1: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <e2>
> 2: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
> 3: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
> 4: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <e2>
> 5: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
> 6: In mtext("text (O?)\n more text", side = 3, line = 1) :
>    conversion failure on 'text (O?)' in 'mbcsToSbcs': dot
substituted for <82>
>
> If the command to print to postscript is omitted, a graph is viewed
> successfully, with the title text:
>
> text(O?)
> more text
>
> Thanks.
>
> --
> r2151
>
> ______________________________________________
> R-help at r-project.org mailing list
> 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.
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

On 19/02/2013, r-help-request at r-project.org
<r-help-request at r-project.org> wrote:
> ------------------------------
>
> Message: 22
> Subject: Re: [R] mtext unicode failure
>
> On 18/02/2013 14:15, e-letter wrote:
>> Readers,
>>
>> How to solve this unicode input error please?
>
> On what system, in what locale?  And where is Unicode mentioned?
>
GNU/Linux; obtained locale settings like so:

Sys.localeconv()
    decimal_point     thousands_sep          grouping   int_curr_symbol
              "."                ""               
""            "GBP "
  currency_symbol mon_decimal_point mon_thousands_sep      mon_grouping
              "?"               "."              
","        "\003\003"
    positive_sign     negative_sign   int_frac_digits       frac_digits
               ""               "-"              
"2"               "2"
    p_cs_precedes    p_sep_by_space     n_cs_precedes    n_sep_by_space
              "1"               "0"              
"1"               "0"
      p_sign_posn       n_sign_posn
              "1"               "1"

The unicode was in the 'mtext...' command, but it seems that the
mailing list server does not accept UTF-8. Tried to set this encoding:

postscript([filename],encoding='UTF-8',...)
Error in postscript([filename], encoding = "UTF-8",  :
  failed to load encoding file in postscript()
In addition: Warning message:
In postscript([filename], encoding = "UTF-8",  :
  failed to load encoding file 'UTF-8'
> If you intended a subscript 2, use plotmath. That is not a character in
> the standard Postscript fonts, nor is in the encoding you selected.  We
> don't know what that is since it depends on your locale: see
?postscript.
>
> Or use the cairo_ps device.
Thanks, the result is adequate, although the position of the subscript
doesn't look pleasing personally.