I want to loop through a CSV of some companies tickers and download their respective ticker data.
我想循环一些公司代码的CSV并下载各自的股票代码数据。
So far I have defined the variable 'ticker' as follows:
到目前为止，我已将变量'ticker'定义如下：
ticker <- companyList[1, 'Symbol']
when I print 'ticker' to the screen, it shows the 1st stocks ticker perfectly fine, but when I try to pass the ticker variable into quantmod's getSymbols function, I get an error.
当我在屏幕上打印“自动收报机”时，它显示第1个股票行情完好无损，但是当我尝试将自动收报机变量传递给quantmod的getSymbols函数时，我收到错误。
getSymbols(ticker)
Error in do.call(paste("getSymbols.", symbol.source, sep = ""), list(Symbols = current.symbols; :
could not find function "getSymbols.940"
Is there an error in my syntax? Is there another way to go about doing this? Any book reccomendations?
我的语法有错误吗？还有另一种方法可以做到这一点吗？任何书籍推荐？
1 个解决方案
#1
1
The easiest way is to specify an environment, for example assuming you have an vector with tickers, than you can do the following:
最简单的方法是指定一个环境，例如假设你有一个带有代码的向量，而不是你可以执行以下操作：
# tickers example
tik <- c("MMM", "ABT", "ABBV", "ANF", "ACT")
# new environment
stockData <- new.env()
# download data
getSymbols(tik, env = stockData)
Than you can index to access the stocks: eg:
您可以索引访问股票：例如：
stockData$MMM
MMM.Open MMM.High MMM.Low MMM.Close MMM.Volume MMM.Adjusted
# 2007-01-03 77.53 78.85 77.38 78.26 3781500 65.42
# 2007-01-04 78.40 78.41 77.45 77.95 2968400 65.16
# 2007-01-05 77.89 77.90 77.01 77.42 2765200 64.72
# 2007-01-08 77.42 78.04 76.97 77.59 2434500 64.86
# 2007-01-09 78.00 78.23 77.44 77.68 1896800 64.93
# 2007-01-10 77.31 77.96 77.04 77.85 1787500 65.07
same for all other stocks.
所有其他股票也一样。
See also here: Quantmod
另见：Quantmod
hth
心连心
EDIT:
编辑：
for exporting you can use something like this:
出口你可以使用这样的东西：
# this will export
lapply(stockData, function(x){
write.csv(x, file=paste0(gsub(".Open", "", names(x)[1]), ".csv"))
})
# the data can be found in the folder (execute the function!!!)
getwd()
#1
1
The easiest way is to specify an environment, for example assuming you have an vector with tickers, than you can do the following:
最简单的方法是指定一个环境，例如假设你有一个带有代码的向量，而不是你可以执行以下操作：
# tickers example
tik <- c("MMM", "ABT", "ABBV", "ANF", "ACT")
# new environment
stockData <- new.env()
# download data
getSymbols(tik, env = stockData)
Than you can index to access the stocks: eg:
您可以索引访问股票：例如：
stockData$MMM
MMM.Open MMM.High MMM.Low MMM.Close MMM.Volume MMM.Adjusted
# 2007-01-03 77.53 78.85 77.38 78.26 3781500 65.42
# 2007-01-04 78.40 78.41 77.45 77.95 2968400 65.16
# 2007-01-05 77.89 77.90 77.01 77.42 2765200 64.72
# 2007-01-08 77.42 78.04 76.97 77.59 2434500 64.86
# 2007-01-09 78.00 78.23 77.44 77.68 1896800 64.93
# 2007-01-10 77.31 77.96 77.04 77.85 1787500 65.07
same for all other stocks.
所有其他股票也一样。
See also here: Quantmod
另见：Quantmod
hth
心连心
EDIT:
编辑：
for exporting you can use something like this:
出口你可以使用这样的东西：
# this will export
lapply(stockData, function(x){
write.csv(x, file=paste0(gsub(".Open", "", names(x)[1]), ".csv"))
})
# the data can be found in the folder (execute the function!!!)
getwd()