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- Use data to produce maps in Leaflet with R
- Use health and proxy data to make a claim about health and inequality
- Become familiar with local patterns of health and inequality
- Consider the choices cartographers make when creating a map
- Practice putting maps together to make a cohesive argument through a collection of maps
- To start, please download the folderfrom Canvas. Unzip the file and save the Exercise 3 folder into your GEOG 381 folder. This is the folder we will be working from in this exercise (and where you should set your working directory to). Inside the folder you will find a copy of the Intro to Leaflet Tutorial that is up on Canvas (copied here for your convenience so that you can use it as a starting point). Consider renaming that RMD document Exercise3.rmd. You will also find a WACensusTracts shapefile which is what we will be joining our data to in order to map it. We will start by collecting data. Go to https://fortress.wa.gov/doh/wtn/WTNIBL/Links to an external site.. This is the interactive map that the Washington State department of health maintains about health and health-related factors by census tract. Take a few minutes to poke around and see what sort of information is available there. For those of you doing atlas projects related to Washington State, this is likely a great source of information for you.Notice that next to each source of data you can click on the bar graph symbol to download a table of the data. The downloaded table will be a .csv file. For this exercise, we will be using two tables. First, click on “Planning for Health” and then using the graph symbol to download the table associated with the “Health Outcomes” rank. Next, download the table for the “Social Determinants” rank under the “Health Disparities” category.Pay attention to what each is telling us (as this will help you draft the framing language and/or create a more informative title and legend later when we map these).Save both of these .csv files into your Exercise 3 folder. Open your .csv files in Excel, Sheets, or some other software that allows you to edit tables.Clean up your table:
There are likely multiple header rows. Make any adjustments you need such that there is only one header row.Consider renaming your State FIPS Code column as simply FIPS as that is what it is called in the shapefile we will be joining our tables to (so this will save you work later).You’ll also want to give each table a clear name so that you can easily bring it into R.When you are done, save your csv file so that you are ready to bring it into R.Now that you have the assignment set up, use what you learned in the Intro to Leaflet tutorial to join your tables to your shapefiles, map them with leaflet, and make an HTML document that showcases your work. Be sure to address all of the criteria included below.Exercise 3 Criteria: Your deliverable for Exercise 3 will be an HTML document that you will submit on Canvas for grading. Be sure that it meets the following criteria: Your HTML document should include two maps made with leaflet:One should showcase the social determinants of health by census tract for Washington StateOne should showcase the health outcomes by census tract for Washington StateOne map should be zoomed out to showcase all of Washington State by defaultOne map should be zoomed into a specific area of the map by default (that area should be discussed in your written text—i.e. it should not be a random area)NOTE: Your maps will be assessed based on how well they communicate the information they are presenting and thus should include an informative legend. Since they are included in an HTML document, you do not need a title for each map, but you will need to include text explaining each map (see below).Your HTML document should also include:A titleAt least two headingsTextual explanations (one paragraph each) of each map (i.e. What is it showing us (i.e. what are social determinants of health/what are health outcomes)? What do the numbers mean/where do they come from? What patterns do you see? Feel free to look at whatever scale you wish and/or to focus in on whatever specific area you wish.). A textual reflection (one paragraph) that explains the relationship (or lack there of) that you see between social determinants of health and health outcomes as you have mapped them.The code used to make each map should be visible in a code chunk associated with each map without superfluous annotationsYour HTML document should hide any code chunks not explicitly used to make your maps.
