element_blank
{GGPLOT2}
This theme element draws nothing, and assigns no space
arrow
{GGPLOT2}
Draw an arrow in a ggplot graph
scale_y_continuous
{GGPLOT2}
Customise continuous y axis
geom_segment
{GGPLOT2}
Generates a line segment or curve
sample_n
{dplyr}
Sample a number of observations from a data frame
bar
{base}
Used for annotations, such as “expression(paste(”-“,bar(y)))”
element_text
{GGPLOT2}
Customise text in GGPLOT2
expression
{base}
Used in plots to add symbols to axes
theme
{GGPLOT2}
Set theme for GGPLOT2
data.frame
{base}
Create a data.frame from vectors
geom_ribbon
{GGPLOT2}
Generates an area plot
geom_point
{GGPLOT2}
Generates a scatter plot
dnorm
{stats}
Density distribution for the normal distribution
The end!