我正在使用R中的包stemDocument来阻止文本文档tm。示例代码：
data("crude")
crude[[1]]
stemDocument(crude[[1]])
我收到一条错误消息：
loadNamespace（name）中的错误：没有名为“ Snowball”的软件包
我已经安装了SnowballC软件包，但找不到Snowball软件包。以下是我的sessionInfo()：
R version 2.15.3 (2013-03-01)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] SnowballC_0.5 tm_0.5-8.3
loaded via a namespace (and not attached):
[1] slam_0.1-31 tools_2.15.3
是否需要其他包装或Snowball？
您有的旧版本pkg:tm。的当前版本tm具有一个描述文件，该文件被SnowballC列为“建议”。旧版本建议使用Snowball。
Package: tm
Title: Text Mining Package
Version: 0.5-10
Date: 2014-01-07
Authors@R: c(person("Ingo", "Feinerer", role = c("aut", "cre"),
email = "[email protected]"),
person("Kurt", "Hornik", role = "aut"),
person("Artifex Software, Inc.", role = c("ctb", "cph"),
comment = "pdf_info.ps taken from GPL Ghostscript"))
Depends: R (>= 2.14.0)
Imports: parallel, slam (>= 0.1-31)
Suggests: filehash, proxy, Rcampdf, Rgraphviz, Rpoppler, SnowballC, XML
这是您当前从CRAN收到的消息：
Package ‘Snowball’ was removed from the CRAN repository.
Formerly available versions can be obtained from the archive.
Archived on 2014-03-16 at the request of the maintainer.
您应该更新到的当前版本tm。尝试这个：
update.packages("tm", checkBuilt = TRUE)
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我来说两句