Online Map Accuracy

A really good comparison of the accuracy of various online maps reminds us that we can't trust information just because it's "on the web".

This is especially noteworthy since the data is a direct reflection of the real-world and many of us rely on this data to get to our appointments, vacations, and friends houses. Everyone has a "MapQuest" story, but its not only MapQuest anymore. We must be suspect to any data online. It becomes particularly difficult, however, when we are required to aggregate data from many sources, where each source has some small bit of truthiness.

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written on
posted in Maps Back to Top

About the Author

Andrew Turner is an advocate of open standards and open data. He is actively involved in many organizations developing and supporting open standards, including OpenStreetMap, Open Geospatial Consortium, Open Web Foundation, OSGeo, and the World Wide Web Consortium. He co-founded CrisisCommons, a community of volunteers that, in coordination with government agencies and disaster response groups, build technology tools to help people in need during and after a crisis such as an earthquake, tsunami, tornado, hurricane, flood, or wildfire.