如何获得给定软件包所需的R的最低版本?
如何检查软件包列表需要哪个版本的R?理想的情况是这样如何获得给定软件包所需的R的最低版本?,r,R,如何检查软件包列表需要哪个版本的R?理想的情况是这样 minimumRVersion <- function(packageList = c(), return=c("list", "min", "mine")) { # code to collate a list of minimum versions of R # required for the listed packages. # Optionally return min(list) or "is my R high enoug
minimumRVersion <- function(packageList = c(), return=c("list", "min", "mine")) {
# code to collate a list of minimum versions of R
# required for the listed packages.
# Optionally return min(list) or "is my R high enough?
return(result)
}
minVersion("RcppEigen")
# 2.15.1
minVersion(c("RcppEigen","OpenMx"), "min")
# 3.0
minimumrvision您可以使用packageDescription
功能,该功能允许您获取软件包要求
我写了一个快速而肮脏的解决方案,请随意改进
minimumRVersion <- function(packageList)
{
requirements <- NULL
for (p in packageList)
{
# Get dependencies for the package
dep <- packageDescription(p, fields = "Depends")
if (!is.na(dep))
{
# dep will be something like:
# "R (>= 3.1.0), grDevices, graphics, stats, utils"
# split by comma
dep <- unlist(strsplit(dep, ","))
# Find requirement for R (may not exist)
r.dep <- dep[grep("R \\(", dep)]
if (!length(r.dep))
r.dep <- NA
}
else
r.dep <- NA
requirements <- c(requirements, r.dep)
}
requirements
}
返回:
[1] " R (>= 3.0.0)" "R (>= 3.1.0)" " R (>= 2.10.0)" "R (>= 3.0.2)" NA
可能需要将其改为“How can get…”以避免作为包请求关闭。(提示:您可能只需要更改标题,其余看起来没问题)很好,我假设可用。包,但限制为已安装的包是有意义的。顺便说一句:您应该检查is.na(dep)
(对于没有列出依赖项的pkg)。
[1] " R (>= 3.0.0)" "R (>= 3.1.0)" " R (>= 2.10.0)" "R (>= 3.0.2)" NA