I have written an R script which includes a loop to download a list of Gsm. However, the url of some Gsms have changed or the condition internet became bad temporarily leading to a break of loop.

I want to continue the loop if some gsms fail to download and the name of gsm is written in a new list.

Then robert advise me the tryCatch function link to C: Geoquery: How to Continue Code Execution on Error

However, i fail to complete the second goal that recording the gsm with warning or error.

My cold is listed below and anyone could help me?

testlist=c("GSMxxx")# There is not a GSMxxx
errorrecord=c()
warningrecord=c()
acc <- testlist[1]
address <- "e:/lab/bigdata/originaldata/sample/test/"
tryCatch(getGEOfile(acc, destdir = address, AnnotGPL = F,amount=c("data")),
         warnings=function(war){warningrecord=append(warningrecord,acc)},
         error=function(err){errorrecord=append(errorrecord,acc)}
         )

Thanks a lot!

Hi Robin,

there was no need to open a new question, you could simply reply on the same one you first posted. Anyway, for what you ask now I think you could simply return what you are interested to store. The problem you have right now is related to the scope of the variables. Concretely, 'warningrecord' and 'errorecord' within the functions are different variables from the ones defined outside these functions. The solution I'm talking about would be this:

rec <- tryCatch(getGEOfile(acc, destdir = address, AnnotGPL = F,amount=c("data")),
                           warnings=function(war){ acc },
                           error=function(err) { acc })
rec
[1] "GSMxxx"

cheers,

robert.