我想按照说明在R中安装xgboost软件包：
install.packages("drat", repos="https://cran.rstudio.com")
drat:::addRepo("dmlc")
install.packages("xgboost", repos="http://dmlc.ml/drat/", type = "source")
前两个软件包的安装似乎工作正常：
install.packages("drat", repos="https://cran.rstudio.com")
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0 0 49369 0 0 0 0 0 0 --:--:-- 0:00:01 --:--:-- 0100 49369 100 49369 0 0 40981 0 0:00:01 0:00:01 --:--:-- 41004
The downloaded binary packages are in
/var/folders/sx/c5z57jp103s493xxcn9bhvwc0000gn/T//RtmpluolUL/downloaded_packages
drat:::addRepo("dmlc")
但xgboost的最终安装实际上是不规则的，我无法在上一篇文章中解决错误：
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0100 351k 100 351k 0 0 550k 0 --:--:-- --:--:-- --:--:-- 550k
* installing *source* package ‘xgboost’ ...
** libs
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c xgboost_R.cc -o xgboost_R.o
In file included from xgboost_R.cc:3:
./dmlc-core/include/dmlc/omp.h:13:9: warning: Warning: OpenMP is not available, project will be compiled into single-thread code. Use OpenMP-enabled compiler to get benefit of multi-threading. [-W#pragma-messages]
#pragma message("Warning: OpenMP is not available, " \
^
1 warning generated.
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c xgboost_custom.cc -o xgboost_custom.o
In file included from xgboost_custom.cc:5:
In file included from ./include/xgboost/logging.h:13:
In file included from ./include/xgboost/./base.h:10:
./dmlc-core/include/dmlc/omp.h:13:9: warning: Warning: OpenMP is not available, project will be compiled into single-thread code. Use OpenMP-enabled compiler to get benefit of multi-threading. [-W#pragma-messages]
#pragma message("Warning: OpenMP is not available, " \
^
1 warning generated.
clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c xgboost_assert.c -o xgboost_assert.o
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c amalgamation/xgboost-all0.cc -o amalgamation/xgboost-all0.o
In file included from amalgamation/xgboost-all0.cc:13:
In file included from amalgamation/../src/metric/metric.cc:6:
In file included from ./include/xgboost/metric.h:14:
In file included from ./include/xgboost/./data.h:15:
In file included from ./include/xgboost/./base.h:10:
./dmlc-core/include/dmlc/omp.h:13:9: warning: Warning: OpenMP is not available, project will be compiled into single-thread code. Use OpenMP-enabled compiler to get benefit of multi-threading. [-W#pragma-messages]
#pragma message("Warning: OpenMP is not available, " \
^
1 warning generated.
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c amalgamation/dmlc-minimum0.cc -o amalgamation/dmlc-minimum0.o
In file included from amalgamation/dmlc-minimum0.cc:8:
amalgamation/../dmlc-core/src/io/input_split_base.cc:26:22: warning: assigning field to itself [-Wself-assign-field]
this->align_bytes_ = align_bytes_;
^
In file included from amalgamation/dmlc-minimum0.cc:10:
In file included from amalgamation/../dmlc-core/src/data.cc:12:
In file included from amalgamation/../dmlc-core/src/data/disk_row_iter.h:19:
In file included from amalgamation/../dmlc-core/src/data/./libsvm_parser.h:13:
In file included from amalgamation/../dmlc-core/src/data/./text_parser.h:11:
./dmlc-core/include/dmlc/omp.h:13:9: warning: Warning: OpenMP is not available, project will be compiled into single-thread code. Use OpenMP-enabled compiler to get benefit of multi-threading. [-W#pragma-messages]
#pragma message("Warning: OpenMP is not available, " \
^
2 warnings generated.
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c rabit/src/engine_empty.cc -o rabit/src/engine_empty.o
clang++ -std=c++11 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I./include -I./dmlc-core/include -I./rabit/include -I. -DXGBOOST_STRICT_R_MODE=1 -DDMLC_LOG_BEFORE_THROW=0 -DDMLC_ENABLE_STD_THREAD=0 -DDMLC_DISABLE_STDIN=1 -DDMLC_LOG_CUSTOMIZE=1 -DXGBOOST_CUSTOMIZE_LOGGER=1 -DRABIT_CUSTOMIZE_MSG_ -DRABIT_STRICT_CXX98_ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -fPIC -Wall -mtune=core2 -g -O2 -c rabit/src/c_api.cc -o rabit/src/c_api.o
clang++ -std=c++11 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o xgboost.so ./xgboost_R.o ./xgboost_custom.o ./xgboost_assert.o ./amalgamation/xgboost-all0.o ./amalgamation/dmlc-minimum0.o ./rabit/src/engine_empty.o ./rabit/src/c_api.o -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
installing to /Library/Frameworks/R.framework/Versions/3.2/Resources/library/xgboost/libs
** R
** data
** demo
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded
* DONE (xgboost)
The downloaded source packages are in
‘/private/var/folders/sx/c5z57jp103s493xxcn9bhvwc0000gn/T/RtmpluolUL/downloaded_packages’
程序包无法正确下载，因此当我尝试在数据集上运行xgboost时出现以下错误：
Error in xgb.DMatrix(data, label = label, missing = missing) :
[14:53:26] amalgamation/../dmlc-core/src/io/local_filesys.cc:61: LocalFileSystem.GetPathInfo 201-225 Error:No such file or directory
答案 0 :(得分：2)
根据this post，当您看到此错误时，应“仔细检查是否已向xgb.DMatrix函数提供了所有数字类型功能”。为我解决了这个问题。
答案 1 :(得分：0)
尝试关闭R然后删除当前的库文件夹并以这种方式重新安装：
if(!require("pacman")) install.packages("pacman")
pacman::p_load(xgboost)
pacman，这是 Pac kage Man ager的一个组合，它为您提供了一个包管理器来管理包安装，而不是尝试手动安装某些东西。这或（或多或少）与人们使用应用程序商店或程序如gdebi（在Debian / Ubuntu安装期间为您获取依赖关系）的原因相同，而不是在下载部分内容后从头开始手动构建程序源自某些镜像或开发站点。
它确保您拥有所有依赖项，检查版本，检查安装，测试程序包的加载，自动执行故障排除步骤等。