Articles in this series
We recommend to you install and use the latest version of R and RStudio IDE. The common R data types for research are numeric, factor, and character. Numeric a <- c(-1, -3, 0, 5, 7, 8, 4, 6.3, 10) "<-" is assignment operator "c()" function combin...
A function is a collection of statements combined to do a specific task. Basic syntax of an R function: function_name <- function(arg_1, arg_2, ...) { Function body } Built-in Function: For example: max(x) maximum of the elements of x, min(x) min...
R packages are combinations of functions and data sets created as extensions to R. While, library in R indicates the place where the package is held. Install packages install.packages('ggplot2') # ggplot2 is An implementation of the grammar of graphi...
Mainly researchers use .csv, .txt, .sav, and .xlxs format files. R base functions for importing data: read.table(), read.delim(), read.csv(), read.csv2() Download data used in this tutorial. Reading a local file data <- read.csv("D:/R4Researchers/c...
Create data: data <- c(1977, 1979, 2013, 2014,'', 2015) Save data as "csv" format comma separated: write.csv(data, 'created_data.csv') Save as semicolon(;) separated csv file: write.csv2(data, file='data_semicolon.csv') Save data as txt file: write.t...
Set a default working directory in RStudio Tools> Global Options> General> Default working directory (when not in a project)> Browse> Choose your directory> Apply> OK Get current dierectory getwd() # stands for "get working directory" Change workin...
