In the "Quick Start" section of the Boost.Geometry documentation, there is the following note under the "Non-Cartesian" header: Boost.Geometry supports a geographical coordinate system, but that is in an extension and not released in the current Boost release. boost::geometry::cs::geographic does seem to be in the v1.53 release. Is this just a remnant from legacy documentation, or are there some gotchas to be expected with the geographic coordinate system support? Jason -- View this message in context: http://boost.2283326.n4.nabble.com/geometry-Documentation-error-regarding-ge... Sent from the Boost - Users mailing list archive at Nabble.com.