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nerub val

R Programming/Introduction - Wikibooks, open books for an open world - 1 views

  • R is statistical software which is used for data analysis.
  • It includes a huge number of statistical procedures such as t-test, chi-square tests, standard linear models, instrumental variables estimation, local polynomial regressions, etc. It also provides high-level graphics
  • capabilities
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  • R is an object oriented programming language. This means that virtually everything can be stored as an R object. Each object has a class. This class describes what the object contains and what each function does with it. For instance, plot(x) produces different outputs depending on whether x is a regression object or a vecto
  • The assignment symbol is "<-". Alternatively, the classical "=" symbol can be used.
  • Arguments are passed to functions inside round brackets (parentheses). One can easily combine functions. For instance you can directly type
  • The symbol "#" comments to the end of the line:
  • Commands are normally separated by a newline. If you want to put more than one statement on a line, you can use the ";" delimiter.
  • You can also have one statement on multiple lines. R is case sensitive: a and A are two different objects. Traditionally underscores "_" are not used in names. It is often better to use dots ".". One should avoid using an underscore as the first character of an object name.
  • Here are some things editors do to keep this book internally consistent. If you have something to contribute, go ahead and make your contribution. Other editors can touch up your edits afterwards so that they conform to the guidelines.
  • The local manual of style WB:LMOS for the R programming book, including a brief explanation of why we do it that way, is: Examples use "source" tags : <source lang="rsplus"> a <- 1:10 ; mean(a) </source>. That makes them look pretty to our readers. The name of packages are in bold  : '''Hmisc'''. Name of functions are in "code" tags: <code>lm()</code>. Page titles -- the part after "R Programming/" -- are in sentence case, like "R Programming/Working with data frames". We couldn't decide between sentence case and title case, so I flipped a coin. Every page has <noinclude>{{R Programming/Navigation}}</noinclude> at the top and {{R Programming/Navbar|Mathematics|Probability Distributions}} at the bottom. That makes it easier to navigate from one page to another online.
    • nerub val
       
      La lenguaje R es un software de estatisticas que hace analisis de los datos.
    • nerub val
       
      Las ventajas de la lenguaje R
    • nerub val
       
      las caracteristicas de la lenguaje R
    • nerub val
       
      Cómo podemos empezar a hacer un programa con esa lenguaje?
    • nerub val
       
      Aqui se exponen otras alternativas al lenguaje R. Y aconseja en la ultima parte cuales son los recomendados para cada nivel de dominio del lenguaje R
  • Beginners can have a look at GNU PSPP or Gretl. Intermediate users can check out Stata. Advanced users who like matrix programming may prefer MATLAB or Octave. Very advanced users may use C or Fortran.
Antoino Martinez Vila

Preguntas Frecuentes sobre el lenguaje R - 1 views

    • Antoino Martinez Vila
       
      Preguntas Frecuentes acerca del lenguaje de programacion R.
  • Can I use R for commercial purposes?
  • R is released under the GNU General Public License (GPL) version 2. If you have any questions regarding the legality of using R in any particular situation you should bring it up with your legal counsel. We are in no position to offer legal advice. It is the opinion of the R Core Team that one can use R for commercial purposes (e.g., in business or in consulting). The GPL, like all Open Source licenses, permits all and any use of the package. It only restricts distribution of R or of other programs containing code from R. This is made clear in clause 6 (“No Discrimination Against Fields of Endeavor”) of the Open Source Definition:
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  • Why is R named R?
  • The name is partly based on the (first) names of the first two R authors (Robert Gentleman and Ross Ihaka), and partly a play on the name of the Bell Labs language `S'
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    Este documento contiene respuestas a algunas de las preguntas más frecuentes acerca de R.
Sébastien Sanchez

Sébastien Teva Sanch - 0 views

started by Sébastien Sanchez on 25 Apr 13 no follow-up yet
Paco Hormigo

Lenguaje R | Rizomática - 0 views

  •  
    En una entrada anterior, Data mining. Análisis de las actividades de los usuarios en Twitter, hemos podido ver como la minería de datos nos permite analizar la actividad de los usuarios, en términos de frecuencia de su actividad en Twitter. Lo que ha sido una sorpresa para el grupo
Pablo David

R-statistics blog - 0 views

  • This particular example would be really easy were we able to use RStudio’s manipulate package. That is only for RStudio users though. Well, not really. There is a simple map available in the gWidgetsWWW2.rapache package that allows us to easily use that specification
    • Pablo David
       
      Se ha inventado una novedosa y muy práctica aplicación para crear páginas web a partir del lenguaje R
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    Hace unos días el blog RStudio anunció Shiny, un nuevo producto para crear fácilmente aplicaciones web interactivas. El API gWidgets tiene el mismo objetivo de hacer que sea fácil para los usuarios de R para crear aplicaciones interactivas.
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