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

Ben Tupper btupper at bigelow.org
Mon Mar 21 13:05:52 CET 2016


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.


> 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
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Ben Tupper
Bigelow Laboratory for Ocean Sciences
60 Bigelow Drive, P.O. Box 380
East Boothbay, Maine 04544

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