Hi Brian,

I have huge amounts of disk. The issue is time efficiency. Why download 150
days of 7000 stocks each day, when I need only download 1 day of each
stock. Of course, I can write my own caching system, but why duplicate what
somebody may have done already. I am relatively new to R, but I have done
similar things in other computer languages (not in Finance though).

On an aside, using attachSymbols, I can load on demand. I would like to
cycle through the list of 7000 stocks. I can get the list, but given "AAPL"
for example, I need to execute AAPL. I do not know how to do this yet.

   Thanks for the input!

     Gordon




On Thu, Apr 26, 2012 at 6:39 PM, Brian G. Peterson <brian@braverock.com>wrote:

> On Thu, 2012-04-26 at 18:22 -0400, Gordon Erlebacher wrote:
> > I wish to keep the last 150 days of 7000 stocks on disk. Every day, I
> > would like to run an update that removes the earliest entry of every
> > stock, and stores the latest entry of every stock. So cache size
> > remains constant, but contents change.
> > Any ideas? Am I clear?
>
> Disk is cheap, and getSymbols supports from and to dates.
>
> Buy more disk.
>
>
> --
> Brian G. Peterson
> http://braverock.com/brian/
> Ph: 773-459-4973
> IM: bgpbraverock
>
>

	[[alternative HTML version deleted]]

