安装3.4.2版quantstrat的问题

Question

我试图在R中安装quantstrat软件包，我已经安装了quantstrat所需的其他软件包，下面是我的会话信息。

sessionInfo()
R version 3.4.2 (2017-09-28)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

Matrix products: default

locale:
[1] LC_COLLATE=Portuguese_Brazil.1252  LC_CTYPE=Portuguese_Brazil.1252    LC_MONETARY=Portuguese_Brazil.1252 LC_NUMERIC=C                      
[5] LC_TIME=Portuguese_Brazil.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] blotter_0.12.4             PerformanceAnalytics_1.5.1 FinancialInstrument_1.2.0  foreach_1.4.3              quantmod_0.4-11           
 [6] TTR_0.23-2                 devtools_1.13.4            xts_0.10-0                 zoo_1.8-0                  lubridate_1.7.1           

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.13     rstudioapi_0.7   knitr_1.17       magrittr_1.5     lattice_0.20-35  R6_2.2.2         quadprog_1.5-5   stringr_1.2.0   
 [9] httr_1.3.1       tools_3.4.2      grid_3.4.2       git2r_0.19.0     withr_2.1.0      iterators_1.0.8  yaml_2.1.14      digest_0.6.12   
[17] codetools_0.2-15 curl_3.0         memoise_1.1.0    stringi_1.1.5    compiler_3.4.2   boot_1.3-20  

当我运行安装包时，我得到的是：

install.packages("quantstrat", repos="https://github.com/braverock/quantstrat.git")
Installing package into ‘C:/Users/augus/Documents/R/win-library/3.4’
(as ‘lib’ is unspecified)
Warning in install.packages :
  unable to access index for repository https://github.com/braverock/quantstrat.git/src/contrib:
  cannot open URL 'https://github.com/braverock/quantstrat.git/src/contrib/PACKAGES'
Warning in install.packages :
  package ‘quantstrat’ is not available (for R version 3.4.2)
Warning in install.packages :
  unable to access index for repository https://github.com/braverock/quantstrat.git/bin/windows/contrib/3.4:
  cannot open URL 'https://github.com/braverock/quantstrat.git/bin/windows/contrib/3.4/PACKAGES'

我还尝试下载一个以前的版本并安装它，但是没有成功，我从下面的链接获得了它：

0.9.1739.zip

install.packages("C:/Users/augus/Dropbox/Trading/R/quantstrat_0.9.17392.zip", repos = NULL)
Installing package into ‘C:/Users/augus/Documents/R/win-library/3.4’
(as ‘lib’ is unspecified)
Warning in install.packages :
  cannot open compressed file 'quantstrat/DESCRIPTION', probable reason 'No such file or directory'
Error in install.packages : cannot open the connection

有人知道我做错了什么吗？

谢谢

奥古斯托

Answer 1

正如在上面的评论中所指出的，为了完整起见，这里有一个答案。

安装quantstrat最新版本最简单的方法是使用devtools通过github安装quantstrat (forge上的quantstrat的版本现已过时)：

library(devtools) 
install_github("braverock/quantstrat")