https://github.com/fu-zev/QuandlAPI_C

Quandl API (C/C++) developed to download numerical data from quandl.com
https://github.com/fu-zev/QuandlAPI_C

Last synced: about 2 months ago
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Quandl API (C/C++) developed to download numerical data from quandl.com

• Host: GitHub
• URL: https://github.com/fu-zev/QuandlAPI_C
• Owner: fu-zev
• Created: 2013-10-09T06:59:01.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2023-05-01T12:40:22.000Z (over 1 year ago)
• Last Synced: 2024-09-05T13:13:36.991Z (4 months ago)
• Language: C++
• Size: 212 KB
• Stars: 27
• Watchers: 6
• Forks: 12
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

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README

        
QuandlAPI_C

===========

Quandl API (C/C++) is developed to download numeric data from quandl.com, making it easy for those C/C++ developers.

The API is encapsulated within a header file: 1) quandl (windows).h for the Windows environment; or 2) quandl (linux).h for the Linux environment.

It is reccommended that users sign up on http://www.quandl.com/users/sign_up, to obtain an authentication token for downloading increased volume of data per day.

1.After downloading the right header file, please include it in your code by:

    //The name by default is quandl (windows).h / quandl (linux).h. 

    //You can change it to quandl.h as follows if you like.

    //You might also put a full directory depending on the location of the header, e.g.: "#include "C:\Users\MyName\Desktop\API\quandl (windows).h"

    #include "quandl.h"

2.Now you can verify your account by by following command. This step can be skipped if you don't have an token or your don't want to use it.

    //to register with the authentication token denote by the string "code".

    quandl::auth(code);

3.Then you can download the csv file by specifying the Quandl code.

    //to download the csv file defined by the quandlcode of a stock

    quandl::get(quandlcode);

Alternatively, you can set your preferred values for the available parameters by:

    //to download the file specified by eight parameters:

    //quandlcode -- quandl code for a stock;

    //order -- "asc" / "desc";

    //StartDate -- in the format of YYYY-MM-DD, the date from which prices are recorded; 

    //EndDate -- in the format of YYYY-MM-DD, the date until prices are recorded;

    //transformation -- "cummul" / "diff" / "rdiff" / "normalize" / "cumulative";

    //collapse -- "daily" / "weekly" / "monthly" / "quarterly" / "annual";

    //rows  -- the number of rows to record;

    //type  -- the type of downloaded files ("csv" / "json" / "xml" );

    quandl::get(quandlcode, order, StartDate, EndDate, transformation, collapse, rows, type); 

    

    

A case study: download the stock price of TENCENT HOLDINGS LTD (TCTZF). The quandlcode is GOOG/PINK_TCTZF. Then you might write the following code:

    //#include "quandl (windows).h"

    int main() {

        quandl ql;

        ql.auth(""); // Replace  with your own token.

        ql.get("GOOG/PINK_TCEHY");

        return 0;

    }

    

    

Please visit http://www.quandl.com/help/api to better understand the Quandl API design.