[R] Backslash \ in string

[Jannis]

Thanks for your reply Erik!

You are right, it does not seem to matter. When the R string contains two \\, xtable prints it as only one \. I should have looked into the Latex output before posting!

Thanks again, and sorry for posting too quick!


Jannis

--- Erik Iverson <eriki at ccbr.umn.edu> schrieb am Do, 15.7.2010:

> Von: Erik Iverson <eriki at ccbr.umn.edu>
> Betreff: Re: [R] Backslash \ in string
> An: "Jannis" <bt_jannis at yahoo.de>
> CC: r-help at r-project.org
> Datum: Donnerstag, 15. Juli, 2010 13:09 Uhr
> On 07/15/2010 08:02 AM, Jannis
> wrote:
> > Dear R community,
> >
> >
> > is there any way to include a backslash in a charakter
> string without meaning some escape sequence?
> >
> > E.g. i need a string like:
> >
> > a<- '\hline'
> > Error: '\h' is an unrecognized escape in character
> string starting "\h"
> >
> > to include some latex code in a xtable object, but I
> only mange to do:
> >
> > a<- '\\hline'
> >
> > which is not what I want.
> 
> 
> Why don't you want that?  I use something like that
> every day with LaTeX and it 
> works fine, so I'm not sure what you mean.  I don't
> use xtable though, so I 
> can't speak to that.  But can you explain what happens
> in the resulting .tex 
> file when you use '\\'.  Escaping each backslash you
> want in your .tex file with 
> another should be the way to go, e.g., the table end of
> line would be written 
> "\\\\" in R.
> 
> >
> > In detail I would like to add the following line of
> code to the first row of an xtable object with the
> add.to.row argument:
> >
> >
> > &  \multicolumn{4}{c}{A}
> \multicolumn{4}{c}{B} \\
> >
> > for which I have to convert it into a character
> sting.
>