[R] Please guide -- Error during export in csv format

[Sunny Singha]

(Re-posting after including R-help)

Thanks Ben,
Changing './' and '.' and shQuote() didn't work. I'm trying dQuote().
For your information the 'name' value retrieved is --> Hội những người
đồng hành cùng

I guess the string is in Vietnamese language. As you would have
observed in error message it wasn't interpreted as above but some
other nonsensical characters (posts_H<U+1ED9>i nh<U+1EEF>ng
ngu<U+1EDD>i d<U+1ED3>ng
> hành cùng line).
Is there a workaround to handle such strings ?

Regards,
Sunny

On Mon, Mar 21, 2016 at 6:29 PM, Sunny Singha
<sunnysingha.analytics at gmail.com> wrote:
> Thanks Ben,
> Changing './' and '.' and shQuote() didn't work. I'm trying dQuote().
> For your information the 'name' value retrieved is --> Hội những người
> đồng hành cùng
>
> I guess the string is in Vietnamese language. As you would have
> observed in error message it wasn't interpreted as above but some
> other nonsensical characters (posts_H<U+1ED9>i nh<U+1EEF>ng
> ngu<U+1EDD>i d<U+1ED3>ng
>> hành cùng line).
> Is there a workaround to handle such strings ?
>
> Regards,
> Sunny
>
> On Mon, Mar 21, 2016 at 5:35 PM, Ben Tupper <btupper at bigelow.org> wrote:
>> Hi,
>>
>> You are defeating the purpose of the file.path() function by providing a path separator in the first argument; you used './', but try instead...
>>
>> my.file1 <- file.path('.', paste0('likes','_',name,'_',grp_id,'.csv'))
>>
>> Also, there appear to be spaces in the 'name' argument - that might be causing you an issue but it is hard to know.  You might try wrapping the value of my.file1 in quotes using shQuote() or maybe even dQuote() - I'm not sure as I am not on Windows.
>>
>> Cheers,
>> Ben
>>
>>> On Mar 21, 2016, at 7:53 AM, Sunny Singha <sunnysingha.analytics at gmail.com> wrote:
>>>
>>> Please guide,
>>> I'm exporting data in '.csv' format in the Windows user directory, I
>>> have full access to. The write operation happens within a for loop.
>>>
>>> Each iteration exports data in csv format in the user directory. The
>>> issue is that the  data gets exported for all the 9 iterations but
>>> fails for 10th iteration giving below error message.
>>>
>>> Error in file(file, ifelse(append, "a", "w")) :
>>>  cannot open the connection
>>> In addition: Warning message:
>>> In file(file, ifelse(append, "a", "w")) :
>>>  cannot open file './/posts_H<U+1ED9>i nh<U+1EEF>ng ngu<U+1EDD>i
>>> d<U+1ED3>ng hành cùng line_752518568125567.csv': Invalid argument
>>> Called from: file(file, ifelse(append, "a", "w"))
>>>
>>> The export directory path is current directory with 'name' extracted as below:
>>> my.file1:  .//likes_H<U+1ED9>i nh<U+1EEF>ng ngu<U+1EDD>i d<U+1ED3>ng
>>> hành cùng line_752518568125567.csv
>>> my.file2:  .//posts_H<U+1ED9>i nh<U+1EEF>ng ngu<U+1EDD>i d<U+1ED3>ng
>>> hành cùng line_752518568125567.csv
>>>
>>> I wondering if the error is due to the the complicated filename ?
>>> Below is the line of code I have used within loop to export data.
>>>
>>>   my.file1 <- file.path('./', paste0('likes','_',name,'_',grp_id,'.csv'))
>>>    my.file2 <- file.path('./', paste0('posts','_',name,'_',grp_id,'.csv'))
>>>
>>>    write.csv(posts_frame, file=my.file2, row.names = F)
>>>    write.csv(likes_frame, file = my.file1, row.names = F)
>>>
>>> Regards,
>>> Sunny
>>>
>>> ______________________________________________
>>> 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/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>
>> Ben Tupper
>> Bigelow Laboratory for Ocean Sciences
>> 60 Bigelow Drive, P.O. Box 380
>> East Boothbay, Maine 04544
>> http://www.bigelow.org
>>