[R] Fatigued R

[bogdan romocea]

The problem with your code is that it doesn't check for errors. See
?try, ?tryCatch. For example:

my.download <- function(forloop) {
  notok <- vector()
  for (i in forloop) {
    cdaily <- try(blpGetData(...))
    if (class(cdaily) == "try-error") {
      notok <- c(notok, i)
    } else {
      #proceed as usual
    }
  }
  notok
}

forloop <- 1:x
repeat {
  ddata <- my.download(forloop)
  forloop <- ddata
  if (length(forloop) == 0) break  #no download errors; stop
}


> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Shubha
> Vishwanath Karanth
> Sent: Tuesday, February 13, 2007 10:06 AM
> To: ONKELINX, Thierry; r-help at stat.math.ethz.ch;
> sarah.goslee at gmail.com
> Subject: Re: [R] Fatigued R
>
> Hi all, thanks for your reply....
>
> But I have to make one thing clear that there are no errors in
> programming...I assure that to you, because I have extracted the data
> many times from the same program...
>
> The problem is with the connection of R with Bloomberg, sometimes the
> data is not fetched at all and so I get the below errors...It
> is mainly
> due to some network jam problems and all...
>
> Could anyone suggest me how to refresh R, or how to always make sure
> that the data is downloaded without any errors for each loop? I tried
> with Sys.sleep() to give some free time to R...but it is not
> successful
> always...
>
> Could anybody help me out?
>
> Thank you,
> Shubha
>
> -----Original Message-----
> From: ONKELINX, Thierry [mailto:Thierry.ONKELINX at inbo.be]
> Sent: Tuesday, February 13, 2007 7:56 PM
> To: Shubha Vishwanath Karanth; r-help at stat.math.ethz.ch
> Subject: RE: [R] Fatigued R
>
> Dear Shubha,
>
> The error message tells you that the error occurs in the line:
> 	merge(d_mer,cdaily)
> And the problem is that d_mer and cdaily have a different class. It
> looks as you need to convert cdaily to the correct class
> (same class as
> d_mer).
> Don't forget to use traceback() when debugging your program.
>
> You code could use some tweaking. Don't be afraid to add spaces and
> indentation. That will make you code a lot more readable.
> I noticed that you have defined some variables within your function
> (lent, t). This might lead to strange behaviour of your
> function, as it
> will use the global variables. Giving a variable the same name as a
> function (t) is confusing. t[2] and t(2) look very similar but do
> something very different.
> Sometimes it pays off to covert for-loop in apply-type functions.
>
> Cheers,
>
> Thierry
> --------------------------------------------------------------
> ----------
> ----
>
> ir. Thierry Onkelinx
>
> Instituut voor natuur- en bosonderzoek / Reseach Institute for Nature
> and Forest
>
> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
> methodology and quality assurance
>
> Gaverstraat 4
>
> 9500 Geraardsbergen
>
> Belgium
>
> tel. + 32 54/436 185
>
> Thierry.Onkelinx at inbo.be
>
> www.inbo.be
>
>
>
> Do not put your faith in what statistics say until you have carefully
> considered what they do not say.  ~William W. Watt
>
> A statistical analysis, properly conducted, is a delicate
> dissection of
> uncertainties, a surgery of suppositions. ~M.J.Moroney
>
>
> -----Oorspronkelijk bericht-----
> Van: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] Namens Shubha Vishwanath
> Karanth
> Verzonden: dinsdag 13 februari 2007 14:51
> Aan: Sarah Goslee; r-help at stat.math.ethz.ch
> Onderwerp: Re: [R] Fatigued R
>
> Ohkkk....I will try to do that now....
>
> This is my download function...
>
>
> download<-function(fil)
> {
> con<-blpConnect(show.days=show_day, na.action=na_action,
> periodicity=periodicity)
> for(i in 1:lent)
> {
> Sys.sleep(3)
> cdaily<-blpGetData(con,unique(t[,i]),fil,start=as.chron(as.Dat
e("1/1/199
> 6", "%m/%d/%Y")),end=as.chron(as.Date("12/28/2006", "%m/%d/%Y")))
> #Sys.sleep(3)
> if(!exists("d_mer")) d_mer=cdaily else d_mer=merge(d_mer,cdaily)
> rm(cdaily)
> }
> dat<-data.frame(Date=index(d_mer),d_mer)
> dat$ABCDEFG=NULL
> path1<-paste("D:\\SAS\\Project2\\Daily\\",fil,"_root.sas7bdat",sep="")
> path2<-paste("D:\\SAS\\Project2\\Daily\\CODEFILES\\",fil,".sas
> ",sep="")
> sasname<-paste(x1,fil,"'",sep="")
> write.foreign(dat,path1,path2,package="SAS",dataname=sasname)
> blpDisconnect(con)
> }
>
> for(j in 1:lenf)
> {
> fname<-paste("D:\\SAS\\Project2\\Daily\\",filename[j],"_root.s
as7bdat",s
> ep="")
> Sys.sleep(600)
> if(!file.exists(fname)) download(fil=filename[j])
> }
>
> And lent=58 and lenf=8... 8 text files will be generated in
> this process
> if the program would have run properly, and each would be of
> size 4,000
> KB.
>
> The error message I get if the program is not run is:
>
> Error in dimnames(x) <- dn : length of 'dimnames' [2] not
> equal to array
> extent
> In addition: Warning message:
> Index vectors are of different classes: chron chron dates in:
> merge(d_mer,cdaily)
>
>
>
> Please could any one help on this?
>
> -----Original Message-----
> From: Sarah Goslee [mailto:sarah.goslee at gmail.com]
> Sent: Tuesday, February 13, 2007 7:09 PM
> To: Shubha Vishwanath Karanth
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] Fatigued R
>
> Hi Shubha,
>
> Perhaps you haven't gotten any help because you haven't provided a
> reproducible example, or even told us what you are trying to do
> (specifically)
> or what errors you are receiving. Frankly, your problem statement
> doesn't
> make any sense to me, and I can't provide advice without more
> information.
>
> As the footer of every email says:
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
> Sarah
>
> On 2/13/07, Shubha Vishwanath Karanth
> <shubhak at ambaresearch.com> wrote:
> > Hi R,
> >
> >
> >
> > Please solve my problem...........
> >
> >
> >
> > I am extracting Bloomberg data from R, in a loop. R is getting
> fatigued
> > by doing this process and gives some errors. I introduced sleep
> > function. Doing this sometimes I get the results and
> sometimes not. I
> > even noticed that if I give complete rest for R (don't open
> R window)
> > for 1 day and then run my code with the sleep function, then the
> program
> > works. But if I keep on doing this with on R, repeatedly I
> get errors.
> >
> >
> >
> > Please can anyone do something for this? Is there any function of
> > refreshing R completely.....Or any other techniques?...I am really
> > getting bugged with this.......
> >
> >
> >
> > Thanks,
> >
> > Shubha
>
>
> --
> Sarah Goslee
> http://www.functionaldiversity.org
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
>