Statistical Functions : Frequency and Partition values in R Language

Descriptive statistics: First hand tools which gives first hand information Central tendency of data Variation in data Structure and shape of data tendency Relationship study Graphical as well as analytical tools are used. Absolute...

Read More

Data Handling - Importing CSV and Tabular data files in R Language

Setting up directories → We can change the current working directory as follows: > setwd ("<location of the dataset>") Example: > setwd ("C":/RCourse/") or > setwd ("C:\\RCourse\\") → The following command returns the current...

Read More

Basic of Calculations _Functions_Matrices in R Language

Function :- Function are a bunch of commands grouped together in a sensible unit. Functions take input arguments, do calculations (or make some graphics, call other functions) and produce some output and return a result in a variable....

Read More

Data Frames in R Programming

The commands c, cbind, vector and matrix functions combine data. Another option is the data frame. In a data frame, we can combine variables of equal length, which each row in the data frame containing observations on the same unit. Hence, it is similar to the matrix or cbind functions. Advantage is that one can make changes to the data without...

Read More

String - Display and Splitting in R Language

Operations with Strings Command strsplit, split the element of a character vector. "Split" can be a single character, or a character string: Usage  strsplit (x,  split,  fixed = FALSE, ...) Arguments  x             ...

Read More

String - Display and Formatting in R Language

Strings Formatting and Display of Strings Operations with Strings We need formatting and display of strings to obtain the results of specific operations in required format. Formatting and Display of Strings Important commands regarding...

Read More

Data Management : Factors in R Language

Categorical variables Quantitative variables Example: Height (in meters) - 1.65, 1.76, .... Qualitative variables Example: Gender - Male, Female Performance - Excellent, Good, Average, Bad .... Categorical variables Example: x : Gender...

Read More

Data Management : Vector indexing in R Language

A vector of positive integers (letters, and Letters return the 26 lowercase and uppercase letters, respectively). > letters [1 : 3]  [1] "a"  "b"  "c" > letters [c(2,4,6) ]  [1]  "b"  "d"  "f'" >...

Read More

Dataframes in R Language

Dataframes : Create dataframe Data frames are generic data objects of R, used to store tabular data. Code :- # Introduction to data frames  vec1 = c(1,2,3)  vec2 = c("R","Scilab","Java")  vec3 = c("For prototyping","For...

Read More

Data Management : Lists in R Language

Vectors, matrices, and arrays is that each of these types of objects may only contain one type of data. For example, a vector may contain all numeric data or all character data. A list is a special type of object that can contain data...

Read More