如何显示所有报价/数据系列的列表,例如来自Yahoo的getSymbols?
答案 0 :(得分:10)
我不知道某种方式。 TTR包具有从纽约证券交易所,美国证券交易所和纳斯达克下载所有当前符号的功能(stockSymbols
)。它试图将它们置于可接受的雅虎格式中,但是不能保证它检索的6,000多个符号在雅虎上有数据。我不知道该为其他交流做些什么...
> library(TTR)
> x <- stockSymbols()
Fetching AMEX symbols...
Fetching NASDAQ symbols...
Fetching NYSE symbols...
> str(x)
'data.frame': 6473 obs. of 8 variables:
$ Symbol : chr "ADK" "ADK-WT" "AFP" "AIM" ...
$ Name : chr "Adcare Health Systems Inc" "Adcare Health Systems Inc" "United Capital Corporation" "Aerosonic Corporation" ...
$ LastSale : num 4.12 2.1 30 2.73 2.7 ...
$ MarketCap: num 3.28e+07 0.00 2.68e+08 1.02e+07 9.29e+07 ...
$ IPOyear : num NA NA 1973 NA NA ...
$ Sector : chr "Health Care" "n/a" "Capital Goods" "Capital Goods" ...
$ Industry : chr "Hospital/Nursing Management" "n/a" "Metal Fabrications" "Industrial Machinery/Components" ...
$ Exchange : chr "AMEX" "AMEX" "AMEX" "AMEX" ...