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This page can be used to convert latitude and longitude coordinates.
The formulas are as follows:
Degrees Minutes Seconds to Degrees Minutes.m
Degrees = Degrees
Minutes.m = Minutes + (Seconds / 60)
Degrees Minutes.m to Decimal Degrees
.d = M.m / 60
Decimal Degrees = Degrees + .d
GeoWebMaps is a free cloud based mapping service that enables you to easily create custom maps from your own Excel, dBase, and CSV files. No log in or registration required.
At the Creating the Policy and Legal Framework for a Location-enabled Society conference in Boston, Kirk Goldsberry, who is a Visiting Scholar at the Center for Geographic Analysis at Harvard, gave a fascinatng presentation with the help of two of his students on the topic of personal geographic data and privacy. Geoff Zeiss provides a recap.