R语言 require
时间: 2023-10-08 17:12:29 浏览: 55
在R语言中,require()函数用于加载(导入)已经安装的包。然而,很多人认为,require()函数并不是加载R包的正确方法,而应该使用library()函数。这一观点在R社区中被广泛接受。比如,统计学家Yihui Xie在2014年的useR大会上发表了这样的言论:“Ladies and gentlemen, I've said this before: require() is the wrong way to load an R package; use library() instead.”
要使用一个已经安装的R包,可以通过install.packages()函数来安装它,然后使用library()函数来加载它。install.packages()函数用于从CRAN(Comprehensive R Archive Network)安装R包,而library()函数则用于加载已经安装的包。 这两个函数是R语言中常用的包管理工具,它们使得我们能够轻松地安装和加载各种功能丰富的R包,从而扩展R的功能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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