I want to use the data in the zipline to do some research. (not in the backtesting )
So how can I find the sid from symbol in a just "helloworld.py"?
zipline.assets.asset, it seems that the asset is implmented in c language.
Thanks
Arthur
I am very very happy with Alphavantage.
BUT I can't find the german stocks (Xetra)
I have tried:
https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=xtr:lin&apikey=MYKEY
(But this works https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=NYSE:DIN&apikey=MYKEY)
https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=Lin.be&apikey=MYKEY
(But this works: https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=Novo-b.CO&apikey=MYKEY)
So my question is - has anyone had any luck getting german stocks on Alphavanta (or another free service. Realtime is not crucial, but obviously a plus).
I use the "Search Endpoint" function to find german stocks on alphavantage.
Let's say you look for "BASF" you could query:
https://www.alphavantage.co/query?function=SYMBOL_SEARCH&keywords=BASF&apikey=[your API key]&datatype=csv
You get a list with possible matches:
symbol,name,type,region,marketOpen,marketClose,timezone,currency,matchScore
BASFY,BASF SE,Equity,United States,09:30,16:00,UTC-05,USD,0.8889
BFFAF,BASF SE,Equity,United States,09:30,16:00,UTC-05,USD,0.8889
BASFX,BMO Short Tax-Free Fund Class A,Mutual Fund,United States,09:30,16:00,UTC- 05,USD,0.8889
BAS.DEX,BASF SE,Equity,XETRA,08:00,20:00,UTC+02,EUR,0.7273
BAS.FRK,BASF SE,Equity,Frankfurt,08:00,20:00,UTC+02,EUR,0.7273
BASA.DEX,BASF SE,Equity,XETRA,08:00,20:00,UTC+02,EUR,0.7273
BAS.BER,BASF SE NA O.N.,Equity,Berlin,08:00,20:00,UTC+02,EUR,0.7273
BASF.NSE,BASF India Limited,Equity,India/NSE,09:15,15:30,UTC+5.5,INR,0.6000
See documentation: https://www.alphavantage.co/documentation/
It seems to work with the yahoo symbols on alphavantage, at least for a few stocks (I did not check all). BASF for example works with:
https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=BASF.TI&apikey=MYKEY
The alphavantage symbols for German securities consist of the Xetra symbol + .DE. For example EUNL.DE (for iShares MSCI World Core ETF). You can find a list of all Xetra stocks here.
I am having problems getting the elastic search indexes to work correctly with Titan Server. I currently have a local Titan/Cassandra setup using Titan Server 0.4.0 with elastic search enabled. I have a test graph 'bg' with the following properties:
Vertices have two properties, "type" and "value".
Edges have a number of other properties with names like "timestamp", "length" and so on.
I am running titan.sh with the rexster-cassandra-es.xml config, and my configuration looks like this:
storage.backend = "cassandra"
storage.hostname = "127.0.0.1"
storage.index.search.backend = "elasticsearch"
storage.index.search.directory = "db/es"
storage.index.search.client-only= "false"
storage.index.search.local-mode = "true"
This configuration is the same in the bg config in Rexter and the groovy script that loads the data.
When I load up Rexster client and type in g = rexster.getGraph("bg"), I can perform an exact search using g.V.has("type","ip_address") and get the correct vertices back. However when I run the query:
g.V.has("type",CONTAINS,"ip_")
I get the error:
Data type of key is not compatible with condition
I think this is something to do with the type "value" not being indexed. What I would like to do is make all vertex and edge attributes indexable so that I can use any of the string matching functions on them as necessary. I have already tried making an indexed key using the command
g.makeKey("type").dataType(String.class).indexed(Vertex.class).indexed("search",Vertex.class).make()
but to be honest I have no idea how this works. Can anyone help point me in the right direction with this? I am completely unfamiliar with elastic search and Titan type definitions.
Thanks,
Adam
the Wiki page Indexing Backend Overview should answer every little detail of your questions.
Cheers,
Daniel
The Library of Congress has a site to search books by ISBN. A simple way to retrive book's information is using a URL like:
http://lccn.loc.gov/2009019559/mods
where it returns a XML structure that may parse easily. The URL requires a unique LCCN number in the the following format:
http://lccn.loc.gov/[lccn]/mods
I have a batch of books that has ISBN encoded in barcode. How may I retrieve/convert ISBN to LCCN in order to retrieve the XML data of the book?
You can use the SRU catalog from the Library of Congress. The query would look something like this:
lx2.loc.gov:210/lcdb?version=1.1&operation=searchRetrieve&query=bath.isbn=[ISBN]&maximumRecords=1&recordSchema=mods
Replacing [ISBN] with the ISBN you want to look up
Within that response is an LCCN element. However, the catalog already returns MODS, so it might not be necessary to do anything at all.
You may use the Google Books API, for example: https://www.googleapis.com/books/v1/volumes?q=LCCN2001051058
Answer is in JSON format. It includes both ISBN-10 and ISBN-13 identifiers. You will have to batch the requests using your favorite programming language, in Pharo Smalltalk with PetitJson parser and Zinc with HTTPS support it would be:
| parser lccnCollection |
parser := PPParserResource current parserAt: PPJsonParser.
lccnCollection := #('2001051058' '2001051058').
lccnCollection do: [: lccnNumber |
| json jsonObject |
json := (Url absoluteFromText: 'https://www.googleapis.com/books/v1/volumes?q=LCCN' , lccnNumber) retrieveContents contents.
jsonObject := parser parse: json.
" ... retrieve ISSN from jsonObject, etc ... "].
Beware you may need an API key to make batch requests to Google.
I want to know if there is an Entry point for kernel32.dll , that is related to any processor data (ID , Serial , etc ... )
and I tried to Google it but I didn't find good results .
Note: I already know WMI , but I need something related to Kernel !
i think it is the best one
http://msdn.microsoft.com/en-us/library/ms724381(VS.85).aspx