- Load the R package we will use.
- Quiz Questions
Replace all the ???s. These are answers on your moodle quiz.
Run all the individual code chunks to make sure the answers in this file correspond with your quiz answers
After you check all your code chunks run then you can knit it. It won’t knit until the ??? are replaced
The quiz assumes that you have watched the videos, downloaded (to your examples folder) and worked through the exercises in exercises_slides-50-61.Rmd
- Pick one of you rplots to save as your preview plot. Use the ggsave command at the end of the chunk of the plot that you want to preview.
Question: modify slide 51
Create a plot with the mpg dataset
add points with geom_point
assign the varaible displ to the x-axis
assign the variable hwy to the y axis
add facet_wrap to split the data into panels based on the manufacturer.
Question: modify facet-ex-2
Create a plot with the mpg dataset
add bars with with geom_bar
- assign the variable manufacturer to the y-axis
add facet_grid to split the data into panels based on the class
let scales vary across columns
let space taken up by panels vary by columns
Question: spend_time
To help you complete this question:
the patchwork slides and
the vignette: https://patchwork.data-imaginist.com/articles/patchwork.html
Download the file spend_time.csv from moodle
spend_time contains 10 years of data on how many hours Americans spend each day on 5 activities
read it into spend_time
Start with spend_time
extract observations for 2011
THEN create a plot with that data
ADD a barchart with geom_col
assign activity to the x-axis
assign avg_hours to the y-axis
assign activity to fill
ADD scales_y_continuous with breaks every hour from 0 to 6 hours
ADD labs to
set subtitle to Avg hours per day: 2011
set x and y to NULL so they won’t be labeled
assign the ouput to p1
display p1
Start with spend_time
THEN create a plot with it
ADD a barchart with geom_col
assign year to the x-axis
assign avg_hours to the y-axis
assign activity to fill
ADD labs to
set subtitle to “Avg hours per day: 2010-2019”
set x and y to NULL so they won’t be labeled
assign the output to p2
*display p2
Use patchwork to display p1 on top of p2
- assign the output to p_all
*display p_all
Start with p_all
AND set legend.position to ‘none’ to get rid of the legend
assign the output to p_all_no_legend
*display p_all_no_legend
Start with p_all_no_legend
see how annotate the composition here: https://patchwork.data-imaginist.com/reference/plot_annotation.html
ADD plot_annotation set
title to “How much time Americans spent on selected activities”
caption to “Source: American Time of Use Survey, https://data.bls.gov/cgi-bin/surveymost?tu”
Question: Patchwork 2
use spend_time from last questions patchwork slides
Start with spend_time
extract observations from food prep
THEN create a plot with that data
ADD point with geom_point
assign year to the x-axis
assign avg_hours to the y-axis
ADD line with geom_smooth
assign year to x-axis
assign avg_hours to the y-axis
ADD breaks on for every year on x axis with scale_x_continuous
ADD labs to
set subtitle to **AVG hours per day: food prep
set x and y to NULL so x and y axes won’t be labeled
assign the output to p4
*display p4
Start with p4
ADD coord_cartesian to change range on y axis to 0 to 6
assign the output to p5
display p5
Start with spend_time
create a plot with that data
ADD points with geom_point
assign year to the x-axis
assign avg_hours to the y-axis
assign activity to color
assign activity to group
ADD line with geom_smooth
assign year to the x-axis
assign avg_hours to the y-axis
assign activity to color
assign activity to group
ADD breaks on for every year on x axis with with scale_x_continuous
ADD coord_cartesian to change range on y axis to 0 to 6
ADD labs to
- set x and y to NULL so they won’t be labeled
assign the output to p6
display p6
Use patchwork to display p4 and p5 on top of p6
