CRAN上的每个软件包似乎都提供了参考手册，但与vignettes相比，它们似乎在安装软件包时不会下载或构建。可以这样做，以便我可以从R命令行访问它们，还是只能在CRAN上访问它们？
最佳答案
从给定包的来源，您可以通过R CMD Rd2pdf构建它：
edd@max:~$ R CMD Rd2pdf --help
Usage: R CMD Rd2pdf [options] files
Generate PDF output from the Rd sources specified by files, by
either giving the paths to the files, or the path to a directory with
the sources of a package, or an installed package.
Unless specified via option '--output', the basename of the output file
equals the basename of argument 'files' if this specifies a package
or a single file, and 'Rd2' otherwise.
The Rd sources are assumed to be ASCII unless they contain \encoding
declarations (which take priority) or --encoding is supplied or if using
package sources, if the package DESCRIPTION file has an Encoding field.
The output encoding defaults to the package encoding then to 'UTF-8'.
Files are listed in the order given: for a package they are in alphabetic
order of the \name sections.
Options:
-h, --help print short help message and exit
-v, --version print version info and exit
--batch no interaction
--no-clean do not remove created temporary files
--no-preview do not preview generated PDF file
--encoding=enc use 'enc' as the default input encoding
--outputEncoding=outenc
use 'outenc' as the default output encoding
--os=NAME use OS subdir 'NAME' (unix or windows)
--OS=NAME the same as '--os'
-o, --output=FILE write output to FILE
--force overwrite output file if it exists
--title=NAME use NAME as the title of the document
--no-index do not index output
--no-description do not typeset the description of a package
--internals typeset 'internal' documentation (usually skipped)
--build_dir=DIR use DIR as the working directory
The output papersize is set by the environment variable R_PAPERSIZE.
The PDF previewer is set by the environment variable R_PDFVIEWER.
Report bugs at bugs.r-project.org .
edd@max:~$