# Search Tutorials

*R is a free, useful software package to anybody who wishes to undertake extensive statistical computations (a user community that includes students, researchers and professionals belonging to various disciplines). Read more*

**17**results found.

**Foss : ***R - English*

**Outline: **Version of R and RStudio used
Operating systems on which these run
Quick intro to R and RStudio
Resizing the font and window size
*, +, -, ^, sqrt
exp, log, sin
Different way..

##### Basic

**Foss : ***R - English*

**Outline: **Storing captaincy information in vectors
Constructing a data frame using vectors
Plotting one vector of a data frame vs. another one
Adding a vector to a data frame
Saving a da..

##### Basic

**Foss : ***R - English*

**Outline: ***Features of RStudio
*A look at the windows in R Studio interface:
*Source and Console windows
*Workspace window
*Plots and Files window
*Exam..

##### Basic

**Foss : ***R - English*

**Outline: ***What is an R script
*Features of R script
*How to create and save an R script from the user interface (UI) of RStudio
*Shortcut keys to create an R script
*How to use auto-c..

##### Basic

**Foss : ***R - English*

**Outline: ***What is working directory in R
*How to know current working directory
*How to use getwd function
*How to set a working directory from the user interface of RStudio
*How to se..

##### Basic

**Foss : ***R - English*

**Outline: ***Shortcut key for assignment operator (<-)
*How to perform numeric indexing
*How to extract a row or column from a data frame
*How to retrieve multiple rows from a data frame
..

##### Basic

**Foss : ***R - English*

**Outline: ***Data required in a matrix format
*Convert a data frame into a matrix
*Create a matrix with known data
*Add two matrices
*Subtract two matrices
*Multiply two matrices eleme..

##### Basic

**Foss : ***R - English*

**Outline: ***How to find the inverse of a matrix
*How to calculate the sum of elements in a matrix using for loop
*How to calculate the sum of elements in a matrix using sum function
*How..

##### Basic

**Foss : ***R - English*

**Outline: **Use of built-in functions in R for exploring a data frame
Access help in RStudio
Advantages of merging data frames
Merge two data frames
Import data from command line
Impor..

##### Basic

**Foss : ***R - English*

**Outline: **What is an object in R
Types of R - objects
What is an atomic vector in R
Types of atomic vectors
How to find types of vectors
Factors in R
Levels of a factor in R
Identi..

##### Basic

**Foss : ***R - English*

**Outline: **Lists in R
Atomic vectors in R
Difference between atomic vectors and lists in R
How to create a list
How to assign names to the elements of a list
Named list in R
How to..

##### Basic

**Foss : ***R - English*

**Outline: **How to find the dimensions of a data frame
Define a histogram
Plot a histogram in R
Add labels to the histogram
Add color to the bins of a histogram
Change the number of b..

##### Basic

**Foss : ***R - English*

**Outline: **What is a bar chart
Draw a bar chart
Use the barplot function
Add labels to the bar chart
Adjust the labels of the bar chart
What is a scatter plot
Draw a scatter plot
Use ..

##### Basic

**Foss : ***R - English*

**Outline: **Define visualization
About grammar of graphics- ggplot2
Use of the plot function
Add labels to a plot
Change the color and type of plot
Plot two graphs in the same plot
Add..

##### Basic

**Foss : ***R - English*

**Outline: **Define aesthetic
Need for aesthetic in plotting
Draw a scatter plot
Customize a scatter plot
View the structure of an object
View the levels of a categorical variable
Dr..

##### Basic

**Foss : ***R - English*

**Outline: **What is data visualization
Need for data manipulation
What is dplyr package
Functions in dplyr package
Install dplyr package
Use filter function
Use filter function wit..

##### Basic

**Foss : ***R - English*

**Outline: **Functions in the dplyr package
Select multiple variables in a data frame
Remove variables from a data frame
Use of select function
Use of starts_with function
Change the ..