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Error correction.
Upgraded US-stocksJRS.xls uploaded.
18 symbols that are not .OB symbols had no quotes for a 4/5/2007
download.
Worksheet4 in above file is sorted to list them.
Brian.
--- In amibroker@xxxxxxxxxxxxxxx, "brian_z321" <brian_z321@xxx> wrote:
>
> Peter,
>
> Thanks for your feedback.
>
> When Jim posted an update approx two months ago I decided to follow
> the topic as free Yahoo data is of interest to a lot of Ami users.
> It has generated a few questions and the most relevant answers have
> been posted in topics based around Jim's posts and also in other
> topics.
> One way to find the topics is to follow my posts of the last month
or
> two as I joined all discussion relevant to this subject.
>
> Since it is such an important part of the Ami platform I will recap
> the main points for the benefit of new users:
>
> I tested the setup from Jim's site without any problems and
> downloaded 10 years data in approx 8 hours.
>
> A significant % of stocks had missing quotes.
> 99.9% of them were .OB stock.
> It is a Yahoo issue and nothing to do with Jim.
> In a post in a topic authored by Whitney* there was discussion on
> ways of bulk deleting those stocks including tools>database purify.
>
> The Jim setup classifies symbols according to the Yahoo/Hemscott
> system.
>
> Users who are interested in stocks that have been delisted or have
> had name changes etc might want to research providers from the help
> manual data providers list and also from the list in the group
files
> section Fdata folder/FundamentalDataProviders.
>
> Answers to your questions below.
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "petermkc" <petermkc@> wrote:
>
> > Now I had the time to look again at the Yahoo data download. I
found
> > jswindle's Yahoo template which I downloaded and installed and
then
> in
> > Amiquote selected to download data from 1900 till today.
> >
> > The result seems to be the same wether I use the Yahoo template
from
> > jrswindle or the one from the Amibroker web page. You wanted to
know
> > which the symols were with the message:
> >
> > "Error during download. Yahoo! - 404 Not Found. Either symbol is
> > incorrect or there is a problem with the data vendor's site"
> >
> > Here they are:
> >
> > ^NDA
> > ^NFA
> > ^NNA
> > AAAB
> > AAAC
> > AACE
> > AAGI
> > AAGIW
> > AAII
> > ABANP
> > ABBK
> > ABBKP
> > ABF
> > ABFI
> > ABGX
> > ABJ
> > ABMCW
> > ABRI
> > ABS
> > AC
> > ACAI
> > ACAM
> > ACBAW
> > ACDO
> > ACK
> > ACLA
> > ACNAF
> > ACR
> > ACRI
> > ACRN
> > ACTR
> > AD
> > ADEX
> > ADIC
>
> It looks like you have merged Ami's US-stocks database with JRS's.
> This probably occurred because they both use the same database name.
> That's my guess anyway.
> This could be the result of not deleting the original US-stocks
> database before installing Jims over the top.
> As I said, I am guessing.
> Maybe you have given an example of one way to merge databases.
>
> I have uploaded a file to the root of the group files section:
>
> US-stocksJRS
>
> It shows the symbols in the JRS setup as at 4/5/2007 in worksheet
one.
> In worksheet two the list is sorted and in worksheet three only the
> symbols with no quotes are listed i.e. 560/8649
> All except one are OB stock.
> The exception ^MSCISC is an index which Yahoo recognises and
reports
> as having no historical data available.
>
> The stocks you listed are not in the .xls list based on Jim's
> download so they did not come from there.
>
> Examples:
>
> Yahoo reports ^NDA as an invalid symbol, AAAC is now used for
AAAC.OB
> and ABJ has no stock matching this symbol.
>
>
>
> > I will stop here as there are many more. I can go manually
through
> the
> > list and delete all those symbols.
>
> Tools>database purify will speed that up for no quotes or use the
> cleanup script file from Ami for symbols with missing quotes.
>
> Brian.
>
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