Google Maps Engine Lite is a great tool for building uncluttered, functional, interactive online maps if you don’t have a lot of artistic talent or technical skills. Here are a few things you can do with it:
- Locator maps: Students in Multimedia Journalism this week will follow a step-by-step visual guide in class on how to create a geospatial data map of the top vote-getters in a poll by the Kansas City Star. Here’s what they’re aiming to create to prepare to make their own maps to post on their blogs; it might look familiar since I blogged about the Kansas City barbecue map yesterday:
- Map routes: Robb Montgomery used Google Maps Engine to show how to get to an outdoor cinema in Berlin over a couple of different routes by searching for directions and drawing routes.
- Layered geolocated data charts: You can import spreadsheets of data organized by location (e.g., state, county, other geographic boundary) in one column and data for each location in the second column. The result is a map with pins the reader can click on to see the data. The New Haven Register used this to map crimes in the city of New Haven, Conn.
That last option is not the easiest way for readers to visualize data if the info in question involves rankable rates or numbers by geographic region. If that’s what you have to work with, what you really want to make is a choropleth.
Don’t be afraid; that’s just a fancy name for a heat map, a way of presenting data that is color coded from most to least, best to worst, etc. Doing this can help readers visually recognize the rank order of each region.
To make a chloropleth, you need to use Google Fusion Tables, which I’ll blog about later this week. Google Fusion Tables can be used to create heat maps by merging a spreadsheet containing state-by-state (or county-by-county, or country-by-country, you get the idea) data with the geographic outlines of their corresponding geographic areas.