导入mgcv失败，因为找不到Rlapack.dll [英] Importing mgcv fails because Rlapack.dll cannot be found

问题描述

我想使用 R.NET 库链接到IronPython中的R统计软件包.一切正常，但现在我需要使用R的 mgcv 库.

I want to link to the R statistical package in IronPython by using the R.NET library. It's been working fine, but now I need to use R's mgcv library.

导入mgcv失败(使用命令rdn.r.EagerEvaluate("library(mgcv)")完成导入，其中rdn是包装R.NET库的IronPython对象).导入失败时，Windows将打开一个对话框，其中显示:由于计算机中缺少Rlapack.dll，因此无法启动该程序.请尝试重新安装该程序以解决此问题."

Importing mgcv fails (import is done with the command rdn.r.EagerEvaluate("library(mgcv)"), where rdn is an IronPython object that wraps the R.NET library). When the import fails, Windows opens a dialog box that says: "The program can't start because Rlapack.dll is missing from your computer. Try reinstalling the program to fix this problem."

当然，如果缺少Rlapack.dll，R最初将永远无法工作，那么这是怎么回事?

Of course, R never would have worked in the first place if Rlapack.dll was missing, so what is going on?

推荐答案

我检查了mgcv包的依赖关系；它们包括基本软件包Matrix.事实证明，R开发团队已将Matrix编译为dll(位于$ {R_HOME}/library/Matrix/libs/i386/Matrix.dll中).该dll需要链接到Rlapack.dll，由于某些原因，当在IronPython中从R.NET调用R时，找不到它.

I inspected the dependencies of the mgcv package; they include the base package Matrix. As it turns out, Matrix has been compiled to a dll (found at ${R_HOME}/library/Matrix/libs/i386/Matrix.dll) by the R development team. That dll needs to link to Rlapack.dll, which for some reason it cannot find when R is called from R.NET in IronPython.

解决方案是将Rlapack.dll的副本(您可以在$ {R_HOME}/bin/i386/中找到)复制到与Matrix.dll相同的目录中.现在每天是星期天.

The solution was to drop a copy of Rlapack.dll (which you can find in ${R_HOME}/bin/i386/) into the same directory as Matrix.dll. Now every day is Sunday.

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