WITSML Element Types The name of the coordinate reference system in a particular naming system. An optional short name (code) can also be specified. Specifying a well known system is highly desired. An example would be to specify a name of 'WGS 84 / UTM zone 10N' with a code of '32610' in the 'EPSG' naming system. Note that specifying a name in the EPSG naming system is asserting that the parameters in the EPSG database are appropriate for this CRS. This is also true for any other naming system. If in doubt, contact your local geodesist. A code to identify the type of projection. A pointer to the wellCRS that represents the geographic system from which this system was projected. Latitude of first standard parallel. Latitude of second standard parallel, if used. Longitude of the Y axis of the resulting map. Latitude at which the X axis intersects the central meridian. Longitude of the central meridian. Latitude of the first point if the two-point specification of the central line is used. Longitude of the first point if the two-point specification of the central line is used. Latitude of the second point if the two-point specification of the central line is used. Longitude of the second point if the two-point specification of the central line is used. Latitude of a point for which the scale factor is specified exactly. Default to origin. Longitude of a point for which the scale factor is specified exactly. Default to origin. Latitude at which the scale on the map is exact. If none is provided, scale is assumed to be exact at the equator. Spheroid radius. Ellipsoid scale factor. Projection method variant - establishes minor variations of the projection. Geoshare proposal. Height above the surface origin location from which the perspective is taken. Zone for the type of projection. Zones have values from 1 to 60 with a required direction of "N" (North) or "S" (South). For example, "21N". North American Datum type. Artificial value added to the X axis. Artificial value added to the Y axis. Bearing angle of the great circle with respect to north at the central point. Is the projection in the northern hemisphere or the southern hemisphere. Description of item and details. Parameter describing the user-defined projection.