我想要做的事情相当简单,但我一直无法弄清楚。我以为我可以做类似的概述hereadjustOHLC - 需要解决方案来循环传递字符的字符向量
我有一个字符向量的tickers是由getSymbols
返回的xts OHLC对象。我想遍历符号每个股票和符号传递给adjustOHLC
调整为分裂:
symbols = c("FCX", "SPY")
for(symbol in symbols){
return(adjustOHLC(symbol,adjust =c("split"), use.Adjusted=FALSE))
}
看来adjustOHLC
不抢变量“符号”的价值:
debug: div <- getDividends(symbol.name)
Browse[2]> symbol.name
[1] "symbol"
Browse[2]>
Error in download.file(paste(yahoo.URL, Symbol.name, "&a=", from.m, "&b=", :
cannot open URL 'http://ichart.finance.yahoo.com/table.csv?s=symbol&a=0&b=01&c=1970&d=3&e=14&f=2012&g=v&ignore=.csv'
In addition: Warning message:
In download.file(paste(yahoo.URL, Symbol.name, "&a=", from.m, "&b=", :
cannot open: HTTP status was '404 Not Found'
如果我使用get(symbols)
,我会得到相同的结果(类似的方法用于本文顶部的链接中):
for(symbol in symbols){
return(adjustOHLC(get(symbol),adjust =c("split"), use.Adjusted=FALSE))
}
debug: div <- getDividends(symbol.name)
Browse[2]> symbol.name
[1] "get(symbol)"
Browse[2]>
Error in download.file(paste(yahoo.URL, Symbol.name, "&a=", from.m, "&b=", :
cannot open URL 'http://ichart.finance.yahoo.com/table.csv?s=get(symbol)&a=0&b=01&c=1970&d=3&e=14&f=2012&g=v&ignore=.csv'
In addition: Warning message:
In download.file(paste(yahoo.URL, Symbol.name, "&a=", from.m, "&b=", :
cannot open: HTTP status was '404 Not Found'
我以为我也可以利用lapply
来提高速度,但是我认为我先遇到了上述问题。
lapply(symbols, function(x) adjustOHLC(x, adjust=c("split"), use.Adjusted=FALSE))
似乎很容易 - 我道歉,如果这是那么微不足道。感谢帮助。