清单[R程序包相关性不安装软件包(Listing R Package Dependencies Wi

有一个简单的方法来获得[R软件包的依赖关系（所有递归的依赖）给定包的列表，无需安装包，它的依赖？类似的东西，以一个假安装在portupgrade的或容易。

Answer 1:

您可以使用的结果available.packages功能。例如，看什么ggplot2取决于：

pack <- available.packages()
pack["ggplot2","Depends"]

这使：

[1] "R (>= 2.14), stats, methods"

请注意，这取决于你想要达到的目标，你可能需要检查Imports场了。

Answer 2:

我没有安装R和我需要找出其中R软件包都被要求在R程序包的列表依存关系的使用在我的公司。

我在文件中写了一个bash脚本，遍历R程序包的列表，并会递归发现的依赖关系。

该脚本使用了一个名为rinput_orig.txt作为输入（如下图所示）文件。因为它的工作该脚本将创建一个名为rinput.txt文件。

该脚本将创建下列文件：

发现解释依赖关系包括R包中依赖于它（例如下面） - rdepsfound.txt。
routput.txt -列出所有的R程序包（从最初的名单和相关的列表）使用许可证和CRAN URL（如下所示）一起。
r404.txt -在404试图卷曲时收到的R程序包的列表。这是方便的，如果你原来的列表中有拼写错误。

bash脚本：

#!/bin/bash

# CLEANUP
rm routput.txt
rm rdepsfound.txt
rm r404.txt

# COPY ORIGINAL INPUT TO WORKING INPUT
cp rinput_orig.txt rinput.txt

IFS=","
while read PACKAGE; do
    echo Processing $PACKAGE...

    PACKAGEURL="http://cran.r-project.org/web/packages/${PACKAGE}/index.html"

    if [ `curl -o /dev/null --silent --head --write-out '%{http_code}\n' ${PACKAGEURL}` != 404 ]; then
        # GET LICENSE INFO OF PACKAGE
        LICENSEINFO=$(curl ${PACKAGEURL} 2>/dev/null | grep -A1 "License:" | grep -v "License:" | gawk 'match($0, /<a href=".*">(.*)<\/a>/, a) {print a[0]}' | sed "s/|/,/g" | sed "s/+/,/g")
        for x in ${LICENSEINFO[*]}
        do
            # SAVE LICENSE
            LICENSE=$(echo ${x} | gawk 'match($0, /<a href=".*">(.*)<\/a>/, a) {print a[1]}')
            break
        done

        # WRITE PACKAGE AND LICENSE TO OUTPUT FILE
        echo $PACKAGE $LICENSE $PACKAGEURL >> routput.txt

        # GET DEPENDENCIES OF PACKAGE
        DEPS=$(curl ${PACKAGEURL} 2>/dev/null | grep -A1 "Depends:" | grep -v "Depends:" | gawk 'match($0, /<a href=".*">(.*)<\/a>/, a) {print a[0]}')
        for x in ${DEPS[*]}
        do
            FOUNDDEP=$(echo "${x}" | gawk 'match($0, /<a href=".*">(.*)<\/a>/, a) {print a[1]}' | sed "s/<\/span>//g")
            if [ "$FOUNDDEP" != "" ]; then
                echo Found dependency $FOUNDDEP for $PACKAGE...
                grep $FOUNDDEP rinput.txt > /dev/null
                if [ "$?" = "0" ]; then
                    echo $FOUNDDEP already exists in package list...
                else
                    echo Adding $FOUNDDEP to package list...
                    # SAVE FOUND DEPENDENCY BACK TO INPUT LIST
                    echo $FOUNDDEP >> rinput.txt
                    # SAVE FOUND DEPENDENCY TO DEPENDENCY LIST FOR EASY VIEWING OF ALL FOUND DEPENDENCIES
                    echo $FOUNDDEP is a dependency of $PACKAGE >> rdepsfound.txt
                fi
            fi
        done
    else
        echo Skipping $PACKAGE because 404 was received...
        echo $PACKAGE $PACKAGEURL >> r404.txt
    fi

done < rinput.txt
echo -e "\nRESULT:"
sort -u routput.txt

例如rinput_orig.txt：

shiny
rmarkdown
xtable
RODBC
RJDBC
XLConnect
openxlsx
xlsx
Rcpp

运行脚本时，例如控制台输出：

Processing shiny...
Processing rmarkdown...
Processing xtable...
Processing RODBC...
Processing RJDBC...
Found dependency DBI for RJDBC...
Adding DBI to package list...
Found dependency rJava for RJDBC...
Adding rJava to package list...
Processing XLConnect...
Found dependency XLConnectJars for XLConnect...
Adding XLConnectJars to package list...
Processing openxlsx...
Processing xlsx...
Found dependency rJava for xlsx...
rJava already exists in package list...
Found dependency xlsxjars for xlsx...
Adding xlsxjars to package list...
Processing Rcpp...
Processing DBI...
Processing rJava...
Processing XLConnectJars...
Processing xlsxjars...
Found dependency rJava for xlsxjars...
rJava already exists in package list...

例如rdepsfound.txt：

DBI is a dependency of RJDBC
rJava is a dependency of RJDBC
XLConnectJars is a dependency of XLConnect
xlsxjars is a dependency of xlsx

例如routput.txt：

shiny GPL-3 http://cran.r-project.org/web/packages/shiny/index.html
rmarkdown GPL-3 http://cran.r-project.org/web/packages/rmarkdown/index.html
xtable GPL-2 http://cran.r-project.org/web/packages/xtable/index.html
RODBC GPL-2 http://cran.r-project.org/web/packages/RODBC/index.html
RJDBC GPL-2 http://cran.r-project.org/web/packages/RJDBC/index.html
XLConnect GPL-3 http://cran.r-project.org/web/packages/XLConnect/index.html
openxlsx GPL-3 http://cran.r-project.org/web/packages/openxlsx/index.html
xlsx GPL-3 http://cran.r-project.org/web/packages/xlsx/index.html
Rcpp GPL-2 http://cran.r-project.org/web/packages/Rcpp/index.html
DBI LGPL-2 http://cran.r-project.org/web/packages/DBI/index.html
rJava GPL-2 http://cran.r-project.org/web/packages/rJava/index.html
XLConnectJars GPL-3 http://cran.r-project.org/web/packages/XLConnectJars/index.html
xlsxjars GPL-3 http://cran.r-project.org/web/packages/xlsxjars/index.html

我希望这可以帮助别人！

Answer 3:

另一个整洁和简单的解决方案是内部功能recursivePackageDependencies从库packrat 。但是，包必须安装在你的机器上的一些库。其优点是，它与自制非CRAN包工程，以及。例：

packrat:::recursivePackageDependencies("ggplot2",lib.loc = .libPaths()[1])

赠送：

 [1] "R6"           "RColorBrewer" "Rcpp"         "colorspace"   "dichromat"    "digest"       "gtable"      
 [8] "labeling"     "lazyeval"     "magrittr"     "munsell"      "plyr"         "reshape2"     "rlang"       
 [15] "scales"       "stringi"      "stringr"      "tibble"       "viridisLite"