Menu
GNU R 3.02
> bib <- "\cite"
Error: '\c' is an unrecognized escape in character string starting ""\c"
> bib <- "\\cite"
> print(bib)
[1] "\\cite"
> sprintf(bib)
[1] "\\cite"
>
how can I print out the string variable bib with just one "\"?
(I've tried everything conceivable, and discover that R treats the "\\" as one character.)
I see that in many cases this is not a problem, since this is usually handled internally by R, say, if the string were to be used as text for a plot.
But I need to send it to LaTeX. So I really have to remove it.
I see cat does the trick. If cat could only be made to send its result to a string.
641
In R (and elsewhere), the backslash is the “escape” symbol, which is followed by another symbol to indicate a special character. For example, "\t" represents a “tab” and "\n" is the symbol for a new line (hard return).
We will discuss the C program to understand How to Print backslash(\) It is very easy, we just have to use “\\” format specifier withing printf(), for printing backslash(\), on the output screen.
To print a "\", use \backslash in math mode and \textbackslash in text mode. To print "\\", use the command twice.
You should use cat.
bib <- "\\cite"
cat(bib)
# \cite
You can remove the ## and [1] by setting a few options in knitr. Here is an example chunk:
<<newChunk,echo=FALSE,comment=NA,background=NA>>=
bib <- "\\cite"
cat(bib)
@
which gets you \cite. Note as well that you can set these options globally.
50
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
