c
{base}
Combine values/vectors into a vector
factor
{base}
Create a factor
expression
{base}
Used in plots to add symbols to axes
quantile
{stats}
Obtain empirical quantiles of a vector
install.packages
{base}
Install R package
which.max
{base}
return index of the largest value in a vector
geom_segment
{GGPLOT2}
Generates a line segment or curve
data.frame
{base}
Create a data.frame from vectors
desc
{dplyr}
Arrange in descending order
geom_ribbon
{GGPLOT2}
Generates an area plot
sd
{stats}
Get standard deviation of a vector
ordered
{dplyr}
Create an ordered factor
dnorm
{stats}
Density distribution for the normal distribution
recode
{dplyr}
Recode a variable
cut
{base}
Convert Numeric to Factor
colnames
{base}
Retrieve column names of a data frame
select
{dplyr}
Select columns from a tibble/data frame
mutate
{dplyr}
Modify/create a column in a data frame
aes
{GGPLOT2}
Construct aesthetic mapping of a ggplot graph
library
{base}
Load an R package
plot
{graphics}
Generic function from base R to produce a plot
read_dta
{haven}
Read a .dta file (Stata data)
levels
{base}
Get levels of a factor
element_line
{GGPLOT2}
Customise line appearance
boxplot
{graphics}
Plot a simple box plot
scale_x_continuous
{GGPLOT2}
Customise continuous x axis
element_blank
{GGPLOT2}
This theme element draws nothing, and assigns no space
summarise
{dplyr}
collapse the dataset to a summary statistic. Usually used with group_by()
table
{base}
Obtain frequency table of a variable/cross-tabulation of two variables
n
{dplyr}
The number of observations in the current group.
head
{utils}
Show first 5 rows of a data frame
geom_histogram
{GGPLOT2}
Generates a histogram
sum
{base}
Get sum of numeric values or a vector
print
{base}
Print object to the console
seq
{base}
Create a sequence
str
{utils}
Get the structure of an R object
min
{base}
Get minimum of a vector
as.character
{base}
Coerce a vector to character
theme
{GGPLOT2}
Set theme for GGPLOT2
with
{base}
evaluate expression in the context of a data frame
rm
{base}
Remove objects
hist
{graphics}
Plot a simple histogram
slice
{dplyr}
Subset rows using their positions
ggplot
{GGPLOT2}
Create a ggplot graph
View
{base}
View a data frame
var
{stats}
Calculate variance
max
{base}
Get maximum of a vector
element_text
{GGPLOT2}
Customise text in GGPLOT2
ggsave
{ggplot2}
Saves the last ggplot or a specified ggplot object to a file
par
{graphics}
Set parameters of the plotting device
ungroup
{dplyr}
Resolve grouping created with “group_by”
labs
{GGPLOT2}
Customise labels in GGPLOT2
median
{stats}
Get median of a vector
summary
{base}
Obtain summary statistics or detailed regression output
range
{base}
Return range of values
arrange
{dplyr}
Sort values of data frame according to a variable/combination of varaibles
group_by
{dplyr}
Group tibble/data.frame by a factor variable. All further tidyverse operations are performed group-wise
read_excel
{readxl}
Read an Excel file
ifelse
{base}
Return a or b depending on the value of test
as.numeric
{base}
Coerce a vector to numeric
mean
{base}
Get mean of a vector
separate
{dplyr}
Separate a character column into multiple columns
save
{base}
Writes an external representation of R objects to the specified file.
subset
{base}
Return subsets of vectors, matrices or data frames which meet conditions.
is.na
{base}
Check if a value is NA/elements of vector are NA
spread
{tidyr}
Spread a key-value pair across multiple columns
setwd
{base}
Set Working Directory
nrow
{base}
Get number of rows of a data frame
ls
{base}
Return a vector of character strings giving the names of the objects in the specified environment
length
{base}
Returns number of elements in an object
filter
{dplyr}
Filter out rows of a data frame according to logical vector
names
{base}
Retrieve names of a list/vector
read.csv
{utils}
Read a csv file to data frame. Specify stringsAsFactors = FALSE to keep all string columns as characters
theme_classic
{GGPLOT2}
A minimalistic theme with no gridlines
scale_y_continuous
{GGPLOT2}
Customise continuous y axis
geom_density
{GGPLOT2}
Generates a density plot
write.csv
{utils}
write a csv file to a data frame
The end!