當我嘗試運行PerformanceAnalytics參考的第22頁中的示例時,出現錯誤消息。見下文。PerformanceAnalytics中的CAPM.alpha錯誤
PS我是一個初學者&這從來沒有爲我工作。此外,我的根本問題是,當我嘗試使用table.CAPM與我自己的數據時,我得到完全相同的錯誤。
感謝您的任何幫助。
> search()
[1] ".GlobalEnv" "package:PerformanceAnalytics"
[3] "package:xts" "package:zoo"
[5] "package:stats" "package:graphics"
[7] "package:grDevices" "package:utils"
[9] "package:datasets" "package:methods"
[11] "Autoloads" "package:base"
> version
_
platform x86_64-w64-mingw32
arch x86_64
os mingw32
system x86_64, mingw32
status
major 2
minor 15.2
year 2012
month 10
day 26
svn rev 61015
language R
version.string R version 2.15.2 (2012-10-26)
nickname Trick or Treat
> data(managers)
> CAPM.alpha(managers[,1,drop=FALSE], managers[,8,drop=FALSE], Rf=.035/12)
Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
0 (non-NA) cases
>
這在R-Forge版本的代碼中已經修復了很長一段時間。 –
@布萊恩我看到它是固定的[這裏](https://r-forge.r-project.org/scm/viewvc.php/pkg/PerformanceAnalytics/R/Return.excess.R?root=returnanalytics&r1=2163&r2= 2296) - 你計劃推出更新嗎? – orizon