Granularity of Location Information, the Plazes Example

I like to introduce Plazes to highlight the importance of granularity in to communicate the timeliness and quality of location information.

The now classic slide on “Location information granularity” with the Geneva airport in the Rhone river and me at the train station (while I took the screenshot in another city)

I might have to update my slides. The new version of Plazes came up with a “My World” view that (I think) has some intentions to take into consideration the granularity in space of the “trazes” I left recently. Drawing a circle is an obvious way to communicate the uncertainty in the location sighting (as modeled by Leonhardi and Rothermel).

No recollection of a trip to the midwest…

Relation to my thesis: Collecting example of visualization location information granularity