SV: [R] dbApply and data.frame
jesper Runge Madsen
runge at plan.auc.dk
Fri Jul 18 12:59:02 CEST 2003
Fra: Peter Dalgaard BSA [mailto:p.dalgaard at biostat.ku.dk]
Sendt: 17. juli 2003 23:32
Til: Thomas W Blackwell
Cc: Jesper Runge Madsen; 'r-help'
Emne: Re: [R] dbApply and data.frame
>I.e. R is not *supposed* to crash, so either there is a platform
>dependency or (more likely) it is triggered by an earlier memory
>corruption in dbApply() or the database backend. What kind of machine
>is this happening on? Would it be possible for you to run under the
>debugger so that we could get a bit more information.
> O__ ---- Peter Dalgaard Blegdamsvej 3
> c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
>~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
I am using a 900 Mhz Athlon, with 512 mb ram, and windows XP. And an IBM
Thinkpad T23 also with XP and 512 mb ram.
I don't know how to run under the debugger but I have found out that if
I save my workspace, shuts down R and reopen R with the saved workspace,
then I can run
With no problems, and even write my data to the MySQL afterwards.
Can it be caused by the packages RMySQL and DBI. I have tried just to
detach them before converting my list to a data.frame but R still
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