[R-SIG-Finance] Earliest available data on yahoo to download

Jeff Ryan jeff.a.ryan at gmail.com
Thu Jul 2 09:30:28 CEST 2009

R_help Help:

While I know this has been answered, I'll just make a few comments
w.r.t. getting the most out of R-finance.

You should really use your real name.  We are all actual people, who
spend actual time on writing, documenting, and supporting our code.  I
realize it isn't a universal standard, but real names are generally

The help files [very well written, mind you ;-) ], are the first place
to always start.  From there a look at the args() or source is
helpful. Following that a search of previous posts is a good next
step.  After all that fails, posting an well written question with a
self-contained example is really the only way to ask for help.


There is also a reasonable amount of code/examples on http://www.quantmod.com

All would have pointed out that the function recognizes 'start' as
much as it does 'nonsense_madeup_arg'.

In general using the list isn't a 'do my homework', but rather a 'I've
done my homework, and I still can't figure it out' tool.


On Wed, Jul 1, 2009 at 8:47 PM, R_help Help<rhelpacc at gmail.com> wrote:
> Hi - I used xts and zoo to try to download stock data from yahoo. I
> set the start date to 2005-01-01. I got only portion starting from
> 2007-01-03. However, if I got to yahoo and manually click to download
> historical data it will give me everything. So is this a known problem
> with xts and zoo? Or is it a problem with yahoo? Is there anyway
> around? Thank you in advance.
> ads
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Jeffrey Ryan
jeffrey.ryan at insightalgo.com

ia: insight algorithmics

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