Why not use R's native (binary) storage, i.e. use:

load("vsmirk.Rdata")
.... update data here...
save(smirkresult, vsmirkdata, file="vsmirk.Rdata")

Regards,

-Mark-

2010/10/25 Johnson, Cedrick W. <cedrick@cedrickjohnson.com>

> [moderator: my earlier email was being held b/c of a mistake I made on my
> end with my email address, sorry for the re-post]
>
> I personally use a mysql database here with the 'quantmod' package. See:
>
> ?getSymbols.MySQL for the nitty gritty details.
>
> You could also just open a connection to mysql either directly or via ODBC
> and convert your time series into a data.frame and then use
> dbWriteTable(dbcon, "SymbolName", Symbol.df). Conversely, to read back into
> R, just use dbReadTable(dbcon, "SymbolName") and convert it into a xts time
> series.
>
> ?dbReadTable and ?dbWriteTable ... If your dataset only adds the new row
> everyday, when writing the table you could specify append=TRUE,
> overwrite=FALSE.
>
> HTH,
>
> C
>
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