R | Data Selection and Manipulation
This functions below aim to give a bit of background on data and data manipulation in R. which.max(x) returns the index of the greatest element of x which.min(x...
Category: R
R | Variable Information
If you want to know a little bit more about the variables you are working with try out these R commands. is.na(x), is.null(x), is.array(x), is.data.frame(x), is...
R | Variable Conversion
The “as….” explicitly converts the data to whatever you desired outcome. as.array(x) as.data.frame(x) as.numeric(x) as.logical(x) as.vector(x)...
R | Slicing and Extracting Data
Indexing Vectors x[n] nth element x[-n] all but the nth element x[1:n] first n elements x[-(1:n)] elements from n+1 to the end x[c(1,4,2)] specific elements x[&...
R | Data Creation
Ever wonder how to generate data within R? c(…) generic function to combine arguments with the default forming a vector; with recursive=TRUE descends thro...
R | Input and Output
Many of the functions for input and output when using R are online. load() load the datasets written with save data(x) loads specified data sets library(x) load...
R|Getting Help
Most R functions have online documentation. help(topic) documentation on topic ?topic id. help.search(“topic”) search the help system apropos...
The Base Plotting System in R
When conducting data analysis plotting is critically important. In R, plots are crafted by calling successive functions to essentially build-up a plot. Just lik...
R Objects: Data Types
OBJECTS R has five basic classes of objects: Character Numeric Integer Complex Logical However, the most basic object is a vector. There are two things which yo...
R: Numbers
In general, numbers in R are treated as numeric objects. For example, ?View Code R 3 # numeric object [1] 3 3L # explicitly gives an integer [1] 3 Inf # a speci...