是否有一个包来处理R中的命令行选项? [英] Is there a package to process command line options in R?
问题描述
有没有一个包来处理R中的命令行选项?
Is there a package to process command-line options in R?
我知道 commandArgs
,但它太基本了。其结果基本上等价于 C
argc 和 argv
>,但是我需要一些东西,就像 C ++
中的 boost :: program_options
code>
I know commandArgs
, but it's too basic. Its result is basically the equivalent to argc
and argv
in C
, but I'd need something on top of that, just like boost::program_options
in C++
, or GetOptions::Long
in perl
.
特别地,在我想提前指定允许哪些选项,如果用户指定了其他内容,则给出错误消息。
In particular, I'd like to specify in advance what options are allowed and give an error message if the user specifies something else.
调用会是这样(用户选项--width = 32 --file = foo.txt):
The call would be like this (with user options --width=32 --file=foo.txt):
R --vanilla --args --width=32 --file=foo.txt < myscript.R
或者,如果 Rscript
used:
or, if Rscript
is used:
myscript.R --width=32 --file=foo.txt
(请不要说,你为什么不自己写它,它不那么难在其他语言你不必须自己写。)
(Please don't say, "why don't you write it yourself, it's not that hard". In other languages you don't have to write it yourself either. :)
推荐答案
getopt
for R
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