R语言中获取果真数据的25种要领

Free Data:
Data Source – Package
Google Finance historical data – quantmod
Google Finance balance sheets – quantmod
Yahoo Finance historical data – quantmod
Yahoo Finance historical data – tseries
Yahoo Finance current options chain – quantmod
Yahoo Finance historical analyst estimates – fImport
Yahoo Finance current key stats – fImport – seems to be broken

OANDA historic exchange rates/metal prices – quantmod
FRED historic macroeconomic indicators – quantmod
World Bank historic macroeconomic indicators – WDI
Google Trends historic search volume data – RGoogleTrends
Google Docs – RGoogleDocs
Twitter – twitteR
Zillow – Zillow
New York Times – RNYTimes
US Census 2000 – UScensus2000
infochimps – infochimps
datamarket – rdatamarket – requires free account
Factual.com – factualR
Geocode addresses – RDSTK
Map coordinates to political boundaries – RDSTK
Weather Underground – Roll your own
Google News – Roll your own
Earth Sciences netCDF Data – Roll your own
Climate Data – Roll your own
Public health data – Roll your own
FishBase – rfishbase

Paid Data:
Bloomberg – RBloomberg
LIM – LIM
Trades and Quotes from NYSE – RTAQ
Interactive Brokers – IBrokers

Useful Tools:
RCurl
RJSON
RJSONIO
XML
scraper
digitizer