7: Introduction to Data Visualization

FRONT

BACK

How would you remove unnecessary numbers from the x axis of a ggplot if your variable on the x axis has the same values? (ex: groups of 3s, 5s, and 8s)

Inside of aes(), wrap the variable in factor()

How do you add a trendline to ggplot()?

geom_smooth()

How do you make scatterplot points translucent? CHECK

geom_point(alpha = val)

How can you alter the aesthetics of an already created ggplot()?

By adding aes() to it again with the changed variable

What is the difference between the fill and color aesthetics? CHECK

fill is always the inside coloring, where color is sometimes just the outside coloring

What aesthetics allow you to change the line dash pattern, the shape of a dot, and the text on a plot or axes?

linetype: line dash pattern

shape: dot shape

labels: plot or axis text

How do you make a scatterplot with text instead of dots?

+ geom_text()

Where are attributes called?

In the geom function

How do you get the row names of a dataframe in r?

row.names(dataframe)

How do you jitter the data in a ggplot?

+ geom_point(position = “jitter”)

How do you set a specific jitter?

jitterVar <- poition_jitter(width = x, height = y, seed = z)

What is the general format for scale functions

scale_aesthetic_randomBullshit

What do scale functions do?

They edit parts of ggplots associated with variables

How do you use labs to rename the x and y axis?

+ labs(x = “xAxisName“, y = “yAxisName”)

How do you set x axis or y axis limits?

+ ylim(low, high)

+ xlim(low, high)

FIRST PASS

FIRST PASS

SECOND PASS

SECOND PASS