R is a language and environment for statistical computing and graphics .
It provides a wide variety of statistical and graphical techniques
(linear and nonlinear modelling, statistical tests, time series analysis,
classification, clustering, …).
— From R intro
But , it is not a popular statistical software .
So , a document for R frequently asked question in Chinese is necessary .
tapply(unlist(t0),unlist(t0),function(x){names(x)})
Here is a minor shortening of that solution:
tapply(t0, unlist(t0), names)
Friedrich Leisch 回复挺客气，文档放置在：
http://cran.r-project.org/other-docs.html
最近和 R Reference Card 的作者 Tom Short 联络了一下，获得了翻译许可。把 mail 贴在这里，算是个纪念吧。
发件人 : Short, Tom <TShort@epri.com>
发送 : 2007年1月31日 9:49:59
收件人 : 刘思喆 <sunbjt@hotmail.com>
主题 : RE: R reference Card translation
Great, SiZhe. I also encourage you to submit it to CRAN
(http://cran.r-project.org/other-docs.html — probably to Friedrich Leisch) so
others can use it too.
- Tom
Tom Short
EPRI
801 Saratoga Road, Burnt Hills, NY 12027
518-374-4699×14 office
518-596-8833 cell
tshort@epri.com t.short@ieee.org
T. A. Short, Electric Power Distribution Handbook, CRC Press, 2004.
http://www.crcpress.com/shopping_cart/products/product_detail.asp?sku=1791
http://www.Rpad.org/Rpad — Interactive, web-based engineering solutions.
> —–Original Message—–
> From: 刘思喆 [mailto:sunbjt@hotmail.com]
> Sent: Tuesday, January 30, 2007 4:39 AM
> To: Short, Tom
> Cc: tshort@epri-peac.com
> Subject: R reference Card translation
>
> Tom Short:
>
> I am writing because I have translated your document (R
> Reference Card)into Chinese, and
>
> would like to distribute the Chinese version to the public.
>
> After translating ,I found the fourth page still not
> fulfilled. So I added some commands to the document.
>
> This Chinese vision will be maintained by me.
> It will be a pleasure if you grant me permission to do so .
>
> Thanks for you work.
> Good luck !
>
>
> Sizhe Liu
>
> 2007-1-30
菜单可以选择中文格式，升级了几个package。一句话这个还是最爱。
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