From simon.urbanek at r-project.org  Wed Feb 29 19:04:12 2012
From: simon.urbanek at r-project.org (Simon Urbanek)
Date: Wed, 29 Feb 2012 13:04:12 -0500
Subject: [Rd] Replace back slashes with forward slashes?
In-Reply-To: <4F4E626F.6050805@prodsyse.com>
References: <4F4E626F.6050805@prodsyse.com>
Message-ID: <CB641CDA-51A7-4F42-BB36-E074911F2372@r-project.org>


On Feb 29, 2012, at 12:37 PM, Spencer Graves wrote:

> Hello, All:
> 
> 
>      What can people tell me about converting back slashes to forward slashes in character strings?
> 
> 

That's it's trivially done with

gsub("\\", "/", x, fixed=TRUE)

Where x is the character string (and I suppose you are aware of it since you are using it below).

The rest of this e-mail makes absolutely no sense to me -- what exactly are you taking about? What else do you want to achieve?

Cheers,
Simon






>      Several years ago, Prof. Ripley provided a solution, which I lost and have not been able to find.
> 
> 
>      Below please find a function to do this.  I do not find this very satisfactory, however, because it uses "scan" and therefore operates on an input not a character string.  Unless someone suggests something better, I plan to add this to the "sos" package and issue a new release very soon.  (The new release is needed, because the RSiteSearch capability has been modified in a way that breaks the current "findFn" core of "sos".)
> 
> 
>      Thanks,
>      Spencer
> 
> back2forwardslash <- function (nmax = 1, pattern = "\\", replacement = "/") {
>    x <- scan(what = character(), quote = pattern, nmax = nmax)
>    x. <- gsub(pattern, replacement, x, fixed = TRUE)
>    paste(x., collapse = " ")
> }
> 
> (x <- back2forwardslash())
> c:\Users\
> 
> # nmax must be one more than the number of embedded blanks
> (x3 <- back2forwardslash(3))
> c:\u\a b\c d
> 
> 
> -- 
> Spencer Graves, PE, PhD
> President and Chief Technology Officer
> Structure Inspection and Monitoring, Inc.
> 751 Emerson Ct.
> San Jos?, CA 95126
> ph:  408-655-4567
> web:  www.structuremonitoring.com
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
> 
> 



[Rd] Replace back slashes with forward slashes?
Simon Urbanek