max
{base}
Get maximum of a vector
str
{utils}
Get the structure of an R object
library
{base}
Load an R package
levels
{base}
Get levels of a factor
c
{base}
Combine values/vectors into a vector
summary
{base}
Obtain summary statistics or detailed regression output
sd
{stats}
Get standard deviation of a vector
setwd
{base}
Set Working Directory
arrange
{dplyr}
Sort values of data frame according to a variable/combination of varaibles
sum
{base}
Get sum of numeric values or a vector
theme_classic
{GGPLOT2}
A minimalistic theme with no gridlines
ungroup
{dplyr}
Resolve grouping created with “group_by”
filter
{dplyr}
Filter out rows of a data frame according to logical vector
geom_histogram
{GGPLOT2}
Generates a histogram
names
{base}
Retrieve names of a list/vector
cut
{base}
Convert Numeric to Factor
desc
{dplyr}
Arrange in descending order
group_by
{dplyr}
Group tibble/data.frame by a factor variable. All further tidyverse operations are performed group-wise
factor
{base}
Create a factor
mean
{base}
Get mean of a vector
labs
{GGPLOT2}
Customise labels in GGPLOT2
boxplot
{graphics}
Plot a simple box plot
hist
{graphics}
Plot a simple histogram
summarise
{dplyr}
collapse the dataset to a summary statistic. Usually used with group_by()
ggplot
{GGPLOT2}
Create a ggplot graph
read_excel
{readxl}
Read an Excel file
recode
{dplyr}
Recode a variable
scale_x_continuous
{GGPLOT2}
Customise continuous x axis
median
{stats}
Get median of a vector
var
{stats}
Calculate variance
ifelse
{base}
Return a or b depending on the value of test
head
{utils}
Show first 5 rows of a data frame
min
{base}
Get minimum of a vector
aes
{GGPLOT2}
Construct aesthetic mapping of a ggplot graph
mutate
{dplyr}
Modify/create a column in a data frame
select
{dplyr}
Select columns from a tibble/data frame
range
{base}
Return range of values
slice
{dplyr}
Subset rows using their positions
seq
{base}
Create a sequence
ordered
{dplyr}
Create an ordered factor
The end!