Datafeed Toolbox includes programmatic and interactive interfaces to access financial data. Both interfaces complete the process of communicating with a financial data server in three simple steps:
The library of functions provides a consistent MATLAB programming interface for all supported financial data service providers. The functions let you customize queries to access all or selected fields from multiple securities over a specified time period. You can also retrieve intraday tick data for specified intervals and store it as time-series data.
The datafeed functions let you integrate market data into your MATLAB program or application.
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Datafeed Toolbox supports two approaches for accessing data from data service providers:
Queries are used for retrieving data that is static or a snapshot in the past, such as current or historical data. MATLAB functions such as
timeseries retrieve data from the service provider immediately after the function is used and do not update with changing market conditions.
Callbacks are used for retrieving data that is dynamic, event-based, or streaming in nature, such as real-time data. The procedure for retrieving real-time data is to connect to the data service, create a query, and attach a callback (a MATLAB function) that will be executed each time data is received from the service provider.
Datafeed Toolbox provides three approaches for retrieving tick data, time-series, and machine-readable news into MATLAB:
You can directly import intraday data using MATLAB functions that work with supported financial data service providers. You can directly import machine-readable news using Thomson Reuters and Bloomberg data services. The amount of intraday data and machine-readable news that can be imported varies by data service provider.
You can retrieve time-series data from kdb+ databases to the MATLAB workspace or you can write data from MATLAB to kdb+ databases. To retrieve data, you create a connection, execute kdb+ commands to perform a query, and fetch results to return them to MATLAB. To write data, you establish a connection to kdb+ and call the
insert function with the name of the table to write to from MATLAB.
Large amounts of historical intraday tick and machine-readable news can be retrieved from Thomson Reuters text file archives. Datafeed Toolbox provides two functions for importing data, in whole or in part, from the text archive files:
rdthloader– reads tick history data archive files
rnseloader– reads machine-readable news archive files
|Market Data Type|
|Data Service Provider||Real Time||Current Market||Intraday Tick or
|Datastream Web Services
|FactSet Data Server||✓||✓|
|Federal Reserve Economic Data (FRED)||✓|
|Kx Systems||Time-Series Database|
|RavenPack News Analytics||✓||✓||✓||✓|
|Reuters Machine Readable News (NewsScope)||✓||✓||✓|
|Reuters Market Data System (RMDS)||✓||✓||✓|
|Reuters Tick History||✓|
|SIX Financial Information||✓||✓||✓|