Overview of R language | Mostly used R Programming packages

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Language
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What is the R Language?
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R is an open source programming language and free
software environment commonly used for
statistical computing within data heavy roles
such as data mining and statistics. The source
code for the R software environment is written
primarily in C, FORTRAN, and R.
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What is a package?
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A Package is a collection of R functions, data
and compiled code. Packages are stored in a
directory called library. Within the R
interface, some packages are already present and
others need to be downloaded and installed.
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What is CRAN?
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CRAN (Comprehensive R Archive Network) is one of
the sources to download R packages. It is a
global repository of open-source packages that
extends the capabilities of R. CRAN has more than
1000 packages to download
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What are the Mostly used packages in R?
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• To visualize data
• ggplot2
• ggvis
• rgl
• googleVis
• To model data
• car
• mgcv
• lme4/nlme
• randomForest
• multcomp
• vcd
• glmnet
• caret

• To load data
• RMySQL, RPostgressSQL, RSQLite
• XLConnect, xlsx
• Foreign
• To manipulate data
• dplyr
• tidyr
• ttringr
• lubridate

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• To Repost Results
• shiny
• RMarkdown
• xtable
• For Spatial data
• Sp, maptools
• maps
• ggmap

• For Time Series and Financial Data
• zoo
• xts
• quantmod
• To write high-performance R code
• rcpp
• data table
• parallel

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• To work with the web
• XML
• jsonlite
• httr
• To write your own R packages
• devtools
• testthat
• roxygen2

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