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| 商品编号: |
xdvd1626c |
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| 商品名稱： |
R語言 win32 win64 英文版 CD |
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| 碟片數量： |
1片 |
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| 銷售價格： |
200 |
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| 瀏覽次數： |
23148 |
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【轉載TXT文檔】 |
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| R語言 win32 win64 英文版 CD |
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.
R是用於統計分析、繪圖的語言和操作環境。 R是屬於GNU系統的一個自由、免費、源代碼開放的軟件，它是一個用於統計計算和統計製圖的優秀工具。
R是一套完整的數據處理、計算和製圖軟件系統。其功能包括：數據存儲和處理系統；數組運算工具（其向量、矩陣運算方面功能尤其強大）；完整連貫的統計分析工具；優秀的統計製圖功能；簡便而強大的編程語言：可操縱數據的輸入和輸入，可實現分支、循環，用戶可自定義功能
[貝爾實驗室]
貝爾實驗室
。
與其說R是一種統計軟件，還不如說R是一種數學計算的環境，因為R並不是僅僅提供若干統計程序、使用者只需指定數據庫和若干參數便可進行一個統計分析。 R的思想是：它可以提供一些集成的統計工具，但更大量的是它提供各種數學計算、統計計算的函數，從而使使用者能靈活機動的進行數據分析，甚至創造出符合需要的新的統計計算方法。
該語言的語法表面上類似C，但在語義上是函數設計語言的（functional programming language）的變種並且和Lisp 以及APL有很強的兼容性。特別的是，它允許在“語言上計算”（computing on the language）。這使得它可以把表達式作為函數的輸入參數，而這種做法對統計模擬和繪圖非常有用。
在R的安裝程序中只包含了8個基礎模塊，其他外在模塊可以通過CRAN獲得（http://cran.r-project.org）。
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