如何在RStudio动态开关的RON架构 [英] How switch R architectures dynamically in RStudio

问题描述

在RStudio有一个工具菜单，让您在选择R的安装版本/建筑全局选项

In RStudio there's a Tools menu which allows you to select an installed version/architecture of R under Global Options.

这是伟大的，但我的这个问题是这样的，顾名思义，它是一个全球选项，所以一旦你选择一个不同的体系结构（或版本号），那么你必须重新启动RStudio它适用于全部您RStudio实例和项目。

That's great, but my issue with that is that, as the name implies, it is a Global option, so once you select a different architecture (or version number) you then have to restart RStudio and it applies to all of your RStudio instances and projects.

这对我来说是一个问题，因为：

This is a problem for me because:

• 我因为他们正在与32位的数据库，如Hortonworks的Hadoop
接口的事实给定的项目中一些脚本，严格要求的32位R

• 我的其它脚本的同一个项目的其中严格规定的64位R，由于（a）某些包的可用性和内（B）内存限制是在32位R上过于小我的操作系统

• I have some scripts within a given project that strictly require 32-bit R due to the fact that they're interfacing with 32-bit databases, such as Hortonworks' Hadoop
• I have other scripts within the same project which strictly require 64-bit R, due to (a) availability of certain packages and (b) memory limits being prohibitively small in 32-bit R on my OS

我们可以称之为问题＃1，这也是因为我有这需要一个特定的架构某些项目的问题，虽然在项目中的所有脚本中使用相同的架构（这​​理论上应该是一个容易解决的问题，我们可以称之为问题＃2）。

which we can call "Issue #1" and it's also a problem because I have certain projects which require a specific architecture, though all the scripts within the project use the same architecture (which should theoretically be an easier to solve problem that we can call "Issue #2").

如果我们能解决问题＃1，那么问题2解决为好。如果我们能解决问题2：我还是会更好，即使问题＃1解决。

If we can solve Issue #1 then Issue #2 is solved as well. If we can solve Issue #2 I'll still be better off, even if Issue #1 is unsolved.

我基本上问如果任何人有一个黑客，解决方法，或者更好的工作流程，以满足这一需要频繁交换架构和/或需要同时为不同的项目运行在不同的R / RStudio会议不同的架构定期基础。

I'm basically asking if anyone has a hack, work-around, or better workflow to address this need for frequently switching architectures and/or needing to run different architectures in different R/RStudio sessions simultaneously for different projects on a regular basis.

我知道，这个功能可能会重新present为RStudio功能请求，如果这个问题不适合计算器出于这个原因然后让我知道，我会删除它。我只是想通了很多其他人可能有这个问题，所以也许有人已经找到了解决方法/破解？

I know that this functionality would probably represent a feature request for RStudio and if this question is not appropriate for StackOverflow for that reason then let me know and I'll delete it. I just figured that a lot of other people probably have this issue, so maybe someone has found a work-around/hack?

推荐答案

有没有简单的方法来做到这一点，但也有一些解决方法。一，你可能会考虑通过系统2 调用启动从R的当前位的味道R的正确位的味道 Rscript.exe ，例如： （未经测试code）：

There's no simple way to do this, but there are some workarounds. One you might consider is launching the correct bit-flavor of R from the current bit-flavor of R via system2 invoking Rscript.exe, e.g. (untested code):

source32 <- function(file) {
  system2("C:\\Program Files\\R\\R-3.1.0\\bin\\i386\\Rscript.exe", normalizePath(file)) 
}
...
# Run a 64 bit script
source("my64.R")

# Run a 32 bit script
source32("my32.R")

当然，这并没有真正给你一个32位的互动环节这么多，运行code作为32位的能力。

Of course that doesn't really give you a 32 bit interactive session so much as the ability to run code as 32 bit.

另外一个提示：如果你按住CTRL的同时发动RStudio，你可以挑选第r风味和位数为启动时启动。这会，如果你切换了大量节省您的时间。

One other tip: If you hold down CTRL while launching RStudio, you can pick the R flavor and bitness to launch on startup. This will save you some time if you're switching a lot.

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