Assignment 3: CartoCSS

This week we talked about some advanced features of CartoCSS. Take this assignment as an opportunity to try these features, improve previous visualizations you've made, and learn a bit about Map Kibera's data.

Resources

Celebrate Google Maps' 10-year anniversary by reading re/code's biography of it.

Advanced CartoCSS Reference (pdf)

This video on Advanced CartoCSS might be helpful.

Part 1: Map Kibera, watsan

Download the watsan (water and sanitation) shapefile from Map Kibera's download page and upload it to your CartoDB account.

Make a CartoDB visualization. Start with a simple visualization wizard and edit the CartoCSS to accomplish the following:

• Add a red outline to the markers of features representing public water points (watsan set to water_public) that have a status of bad.
• Using a variable, make the markers' radius increase as you zoom in. For example, every four zoom levels make the radius increase by 5 pixels.
• Using one conditional statement, style the markers of features with watsan set to recyling [sic] or urban_agriculture similarly.

Make other changes to the map as you like and provide a public link to the visualization in your submission as well as your CartoCSS.

Part 2: Map Kibera, education

Download the education shapefile from Map Kibera's download page and upload it to your CartoDB account.

Use the students attribute to make schools with more students larger than schools with fewer students. Not all schools have students set, and that is okay. You may have to change the type of the students in CartoDB after you upload it.

Make other changes to the map as you like and provide a public link to the visualization in your submission as well as your CartoCSS.

Part 3: Improve one of your visualizations

Open a visualization you made for Assignment 2 and edit it to use at least one of the CartoCSS concepts covered this week:

• combining conditions,
• variables, and
• using attributes in CartoCSS

Provide a public link to the visualization in your submission as well as your CartoCSS.

Submitting your work

Submit a link to your work and your CartoCSS for each part combined in one PDF. You may optionally choose to include a short paragraph response or summary of your work.