在 RStudio 中加载 rgdal 时遇到问题

Question

为什么 rgdal 在 RStudio (0.94.110) 中无法加载，但在 R (2.13.2) 中却无法加载？

abarbour% R

R version 2.13.2 (2011-09-30)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

[编辑以删除无关信息]

> library(rgdal)
Loading required package: methods
Loading required package: sp
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 1.8.1, released 2011/07/09
Path to GDAL shared files: /Library/Frameworks/GDAL.framework/Versions/1.8/Resources/gdal
Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009, [PJ_VERSION: 470]
Path to PROJ.4 shared files: (autodetected)

但是，在 RStudio 中：

R version 2.13.2 (2011-09-30)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

[再次编辑]

> library(rgdal)
Loading required package: methods
Loading required package: sp
Error in dyn.load(file, DLLpath = DLLpath, ...) : 
  unable to load shared object '/Users/abarbour/kook.processing/R/PACKAGES/rgdal/libs/x86_64/rgdal.so':
  dlopen(/Users/abarbour/kook.processing/R/PACKAGES/rgdal/libs/x86_64/rgdal.so, 6): Symbol not found: ___emutls_get_address
  Referenced from: /usr/local/lib/libstdc++.6.dylib
  Expected in: /Library/Frameworks/R.framework/Resources/lib/libgcc_s.1.dylib
 in /usr/local/lib/libstdc++.6.dylib
Error: package/namespace load failed for 'rgdal'

有人知道为什么会发生这种情况吗？是否有某种我不知道的 RStudio 默认设置？

请注意，rgdal 是使用以下命令安装的，并且已经安装了 KyngChaos (GDAL完整框架):

sudo R CMD INSTALL --configure-args='--with-gdal-config=/Library/Frameworks/GDAL.framework/unix/bin/gdal-config --with-proj-include=/Library/Frameworks/PROJ.framework/unix/include --with-proj-lib=/Library/Frameworks/PROJ.framework/unix/lib' rgdal_0.7-1.tar.gz

Answer 1

归功于 RStudio 支持人员的 Josh（请参阅 讨论)。

在 RStudio 中：

> setRepositories()

[输入“1 2”]

> install.packages("rgdal")
> library(rgdal)

给出正常的加载行为：

> library(rgdal)
Loading required package: methods
Loading required package: sp
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 1.8.0, released 2011/01/12
Path to GDAL shared files: /Users/abarbour/kook.processing/R/PACKAGES/rgdal/gdal
Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009, [PJ_VERSION: 470]
Path to PROJ.4 shared files: /Users/abarbour/kook.processing/R/PACKAGES/rgdal/proj