关于data.table中的melt.data.table的文档 [英] Documentation about melt.data.table in data.table

问题描述

我想在data.table v 1.8.11中阅读更多有关新函数的细节，阅读

我尝试了？melt.data.table 正如上面的链接所指出的。
但没有文档..

在指定的软件包和库中没有用于melt.data.table的文档：$ b $

$ b

$ b

  R版本3.0.2（2013-09-25）
平台：x86_64-w64-mingw32 / x64（64位）
 
 locale：
 [1] LC_COLLATE = English_United States.1252 LC_CTYPE = English_United States.1252 LC_MONETARY = English_United States.1252 
 [4] LC_NUMERIC = C LC_TIME = English_United States.1252 
 
附加基本包：
 [1] stats graphics grDevices utils数据集方法base 
 
其他附加包：
 [1] data.table_1.8.11 
  

我错过了什么吗？

于2014年1月20日编辑

**问题仍未解决**

我试着将数据表删除并删除了库目录。

然后使用precompiled for windows安装在此链接

 > install.packages（〜/ Downloads / data.table_1.8.11.zip，repos = NULL）
 install.packages中的警告：
 package憕/Downloads/data.table_1.8.11.zip?is不可用（对于R版本3.0.2）
将软件包安装到愠：/Users/James/R/win-library/3.0？（未指定憀ib？）
 package慸ata.table？成功解包并且MD5总数检查
  

重新安装后sessionInfo（）是相同的，信息。
仍然是？melt.data.table不工作。

解决方案

[由Matt编辑]结果data.table首页是误导（现在固定）

从R-Forge安装的正确方法是

  install.packages（data.table，repos =http://R-Forge.R-project.org）。 
  

然后问题解决了，并且？melt.data.table 可用。

I want to read more details about the new function in data.table v 1.8.11, after reading the link

I tried ?melt.data.table as pointed in the above link. But there's no documents..

No documentation for melt.data.table?in specified packages and libraries: you could try ??melt.data.table?

Here's my sessionInfo()

R version 3.0.2 (2013-09-25)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                           LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] data.table_1.8.11

Did I miss something?

EDIT On Jan20 2014

** Problems Still Not Solved**

I tried unistalled the data.table and deleted the library directory.

And then installed using the precompiled for windows in this link

> install.packages("~/Downloads/data.table_1.8.11.zip", repos = NULL)
Warning in install.packages :
  package 憕/Downloads/data.table_1.8.11.zip?is not available (for R version 3.0.2)
Installing package into 慍:/Users/James/R/win-library/3.0?(as 憀ib?is unspecified)
package 慸ata.table?successfully unpacked and MD5 sums checked

The sessionInfo() is the same after reinstalling, and I put all the information here. Still the ?melt.data.table not working.

解决方案

[Edit by Matt] In turns out the data.table homepage was misleading (now fixed) and the Windows .zip on that page was 5 months old.

The correct way to install from R-Forge is

install.packages("data.table", repos="http://R-Forge.R-project.org"). 

Then the problem is solved and the documentation for ?melt.data.table is available.

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