Dear List I asked this question before, got some tips but can't get it solved. it is clear now that this problem only occurs when run on windows (I tested it on windows XP) nothing wrong at all when run on unix. unfortunately, sometimes I have to run it on windows, I appreciate any suggestion on how to circumvent this problem when run on windows. below is the problem description I submitted before.
############################################################# I am running a loop downloading web pages and save the html to a temporary file (use download.file() ) then read (using readLines) it in for processing; finally write useful info from each processed page to a unique file the problem is once the loop runs up to somewhere near 5000, it will throw out an err like below and won't go further. ---------------------------------------------------------------- Error in file(file, ifelse(append, "a", "w")) : cannot open the connection ----------------------------------------------------------------- In the meantime, a request for new connection won't be successful, for example, a request for the help page of "file" will trigger err below ----------------------------------------------------------------------- ?file Error in gzfile(file, "rb") : cannot open the connection In addition: Warning message: In gzfile(file, "rb") : cannot open compressed file 'C:/PROGRA~1/R/R-211~1.1/library/stats/help/aliases.rds', probable reason 'Too many open files' ----------------------------------------------------------------------- I am not sure if the problem is too many connections not closed. since I close the file connection after each readLines. checking with showConnections(all=T) does not show excessive connections and closeAllConnections() does not help. Can any one help me on this? Any answer highly appreciated. yong ______________________________________________ R-help@r-project.org mailing list 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.
