[R] paste0 in file path

[Bob Rudis]

if the files are supposed to be "1r.xlsx", "2r.xlsx" (etc) then you need to
ensure there's a "/" before it.

It's better to use `file.path()` to, well, build file paths since it will
help account for differences between directory separators on the various
operating systems out there.

On Wed, Aug 31, 2016 at 11:54 AM, Uwe Ligges <
ligges at statistik.tu-dortmund.de> wrote:

>
>
> On 31.08.2016 17:50, Leslie Rutkowski wrote:
>
>> Hi,
>>
>> I'm trying to reshape and output 8 simple tables into excel files. This is
>> the code I'm using
>>
>>   for (i in 1:8) {
>>   count <- table(mydata$ctry, mydata[,paste0("q0",i,"r")])
>>   dat <- as.data.frame(q01count)
>>
>>   wide <- reshape(dat,
>>                   timevar="Var2",
>>                   idvar="Var1",
>>                   direction="wide")
>>    write.xlsx(wide, file=paste0(i, 'C:/temp/q0',i,'r.xlsx'))
>>
>
>                                   ^^
> remove the i?
>
> Best,
> Uwe Ligges
>
>
>
>   }
>>
>> All goes well until the write.xlsx, which produces the error
>>
>> Error in .jnew("java/io/FileOutputStream", jFile) :
>>   java.io.FileNotFoundException: 1C:\temp\q01r.xlsx (The filename,
>> directory name, or volume label syntax is incorrect)
>>
>> Among other things, I'm puzzled about why a "1" is getting tacked on to
>> the
>> file path.
>>
>> Any hints?
>>
>> Thanks,
>> Leslie
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> 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/posti
>> ng-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/posti
> ng-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

	[[alternative HTML version deleted]]