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12
休闲聊天区 / Re: Do you mind to have a R subForum Here?
« Last post by clove on September 18, 2018, 09:21:31 am »
看时光飞逝 我祈祷明天
每个小小梦想能够慢慢的实现
13
休闲聊天区 / Re: Do you mind to have a R subForum Here?
« Last post by David2020 on September 10, 2018, 08:44:24 am »
Introduction to R
R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R.

R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, …) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity.

One of R’s strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. Great care has been taken over the defaults for the minor design choices in graphics, but the user retains full control.

R is available as Free Software under the terms of the Free Software Foundation’s GNU General Public License in source code form. It compiles and runs on a wide variety of UNIX platforms and similar systems (including FreeBSD and Linux), Windows and MacOS.

The R environment
R is an integrated suite of software facilities for data manipulation, calculation and graphical display. It includes

an effective data handling and storage facility,
a suite of operators for calculations on arrays, in particular matrices,
a large, coherent, integrated collection of intermediate tools for data analysis,
graphical facilities for data analysis and display either on-screen or on hardcopy, and
a well-developed, simple and effective programming language which includes conditionals, loops, user-defined recursive functions and input and output facilities.
The term “environment” is intended to characterize it as a fully planned and coherent system, rather than an incremental accretion of very specific and inflexible tools, as is frequently the case with other data analysis software.

R, like S, is designed around a true computer language, and it allows users to add additional functionality by defining new functions. Much of the system is itself written in the R dialect of S, which makes it easy for users to follow the algorithmic choices made. For computationally-intensive tasks, C, C++ and Fortran code can be linked and called at run time. Advanced users can write C code to manipulate R objects directly.

Many users think of R as a statistics system. We prefer to think of it of an environment within which statistical techniques are implemented. R can be extended (easily) via packages. There are about eight packages supplied with the R distribution and many more are available through the CRAN family of Internet sites covering a very wide range of modern statistics.

R has its own LaTeX-like documentation format, which is used to supply comprehensive documentation, both on-line in a number of formats and in hardcopy.
14
休闲聊天区 / Re: 好久没来了,也回来看看。
« Last post by lele chen on September 09, 2018, 01:19:33 pm »
15
休闲聊天区 / Re: 这里是不是快要关闭了?
« Last post by lele chen on September 09, 2018, 01:19:09 pm »
时间过得真快哇,18年了
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休闲聊天区 / Re: Do you mind to have a R subForum Here?
« Last post by iamwf on August 17, 2018, 04:33:19 pm »
What does R mean?
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休闲聊天区 / Do you mind to have a R subForum Here?
« Last post by David2020 on August 14, 2018, 12:26:22 pm »
?R
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休闲聊天区 / Re: 这里是不是快要关闭了?
« Last post by David2020 on August 14, 2018, 12:25:14 pm »
haha,Here I am.
19
CMDed主论坛 / Re: Webmin: No Perl MD5 hashing module found!
« Last post by clove on August 14, 2018, 10:45:04 am »
人话看懂了,首层看不懂
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CMDed主论坛 / Re: Webmin: No Perl MD5 hashing module found!
« Last post by iamwf on July 27, 2018, 04:15:31 pm »
说人话——
centos的话运行:
yum install perl-Digest-MD5 -y

问题应该就解决了。
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