GG Plot

Question 1

Components of a creating a plot using ggplot2

Answer 1

1. Data (Vector or column)
2. Aesthetic mappings of the data (x, y values, map variables to colors)
3. At least one geometric object (type of plot or chart)

Question 2

inputs for Aesthetic Mappings

Answer 2

ggplot(data_frame, aes(x = x_column, y = y_column)

Question 3

inputs for geometric opject

Answer 3

geom_(point or histogram or box plot(plot inputs for bins, fill, etc)

Question 4

Sample boxplot code

Answer 4

ggplot(family, aes( x = age, y = weight)) + geom_boxplot(color = ‘light blue’)

Question 5

Sample histogram code

Answer 5

ggplot(mpg, aes(x = engine size, y = ..density..##Fills density of 100)) + geom_histogram(bins = 5 ##of total bins, color = ‘blue’#color of bins)

Question 6

facet_wrap

Answer 6

Displays two histograms side by side by different variables:

ggplot(mpg, aes(x = engine size, y = ..density..##Fills density of 100)) + geom_histogram(bins = 5 ##of total bins, color = ‘blue’#color of bins) + facet_wrap(~vehicletype)