Ce n'est pas juste un roman policier. It's not just a detective novel. 24/01/2014 - Le rÃ©alisateur de The Reverse tournera au printemps l'adaptation d'un roman policier devenu un best-seller. 24/01/2014 - The director of The Reverse will film in spring an adaptation of a detective novel which became a best-seller.
A vertical coordinate system defines the origin for height or depth values. Like a horizontal coordinate system, most of the information in a vertical coordinate system is not needed unless you want to display or combine a dataset with other data that uses a different vertical coordinate system. geographic coordinate system (GCS) uses a three-dimensional spherical surface to define locations on the earth. A GCS is often incorrectly called a datum, but a datum is only one part of a GCS. A GCS includes an angular unit of measure, a prime meridian, and a datum (based on a spheroid).
Horizontal datums are used for describing a point on the earth 's surface, in latitude and longitude or another coordinate system. Vertical datums measure elevations or depths. In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made.ertical datums are either tidal, based on sea levels, or geodetic, based on the same ellipsoid models of the earth used for computing horizontal datums. In the past, datums were measured by survey control points using level bars and optical surface measurement tools.