Ducky Sherwood writes to point out a free new service she’s created called Mapeteria. With Mapeteria, you can take a CSV file (comma-separated values) of data for US States, Canadian provinces, or French departements, and plot them as a choropleth map (color shade depends on the value of the data) in either Google Maps or Google Earth.
You’ll have to put the data in a specific format, but the Mapeteria website has full directions, and it’s a logical and straightforward format. You’ll also have to upload the CSV file to a webserver, and enter the web address for the CSV file on the Mapeteria site. Beyond that are a few more optional parameters to enter:
- Divisor – you can divide your data by population, area, or the default of nothing
- Color mapping -Set the colors for low and high data values
- Descriptive text
- High or low resolution
Then just click on the Give me a KML file! or Show it on Google Maps! button, and you’re good to go. A simple alternative to using GE-Graph.
Ducky has some sample datasets to look at in either Google Maps or Google Earth. Here’s the price of electricity for the US in Google Maps:
And here’s the data I’ve always been looking for on French milk production in kiloliters by departement:
About the only thing I wish it had was an automatic scale marker, but you can always add those in the descriptive text.
More info is available on a posting on the KML Developer Support Group
Thanks, Ducky!
Other posts in the Google Earth Data Tools series
- KML Editors
- Diagramming In Google Maps And Google Earth With Smoot
- Plotting Data In Google Earth Using GE-Graph
- Drawing Grids, Paths And Polygons In Google Earth Using GE-Path
- Online Google Earth Utilities For Buffering And Area Calculations
- Easy Display Of Thematic Data In Google Maps And Google Earth
- Using GIF/PNG Transparency In Displaying Raster Graphics In Google Earth
- Adding Vector Graphic Objects To Google Earth
- Animated GIFs In Google Earth
- Creating A Network KML Link To A Google Spreadsheet
- LIDAR Tools
- EarthPlot Software Tools For Google Earth
- Geographic Time Animations
- Convert TIGER Polygons To KML Files
- Putting Time Data Into A KML File
- Using The KML Time Embedder To Stamp Time Data Into A Google Earth File
- Using The KML Time Embedder, Concluded
- KML Time Embedder Improved With Hour-Minute-Second Ability
- Grid Creation And Path/Polygon Measurements: Two New Online KML Tools
- Google Earth PhotoOverlay Tool
- KML Random Placemark Generator
- Update For Online Google Earth Utilities
- KML Time Code Utility
- Screen Overlays In Google Earth
- The KML Screen Overlay Maker Utility
- KML Screen Overlay Maker Utility, Concluded
- KML Circle Generator
- Creating Google Earth Screen Overlays With EarthPaint
- Text Editor With KML Validation
- Online Spreadsheet To KML Converter
- Version 2.0 Of Google’s Online KML Spreadsheet Mapper Tool Released
- Creating Google Earth Ground Overlays From Georeferenced Images
- Google Earth Ground Overlays With GIF Transparency
- Creating "Transparent" Topo Map Overlays For Google Earth
- Using Google Earth Ground Overlays To Display Shapefile Data
- Converting 3D Objects Into Google Earth Format
- Thematic Mapping In Google Earth
- An Online KML Validator
“chloropleth map” – typo? It’s choropleth.
Well, I was about to insist that “chloropleth” was correct, when I saw this in Wikipedia:<br/>”Choropleth is often misspelled as chloropleth – with an extra “L” – because it is mistakenly assumed that the name of the map refers to its use of colour.”<br/>Interesting – I’ve seen “chloropleth” more often than “choropleth”. You learn something new every day. Thanks!