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 (click on the image for a larger view):
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
- Modify A KML Polygon File With Excel Data
- US Nautical Chart Overlay For Google Earth
- Plot Google Analytics Geographic Data In Google Earth/Maps
“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!