ref_coordinate_transformation

Changes Document
Standard Instance Values

kind	description	source	version	status
		ref _source .name	ref _epicentre _version .name
map projection	A transformation that converts points on a graticular surface to points on a plane. The same set of parameters defines the inverse mapping.	POSC	2.1	current
software	A transformation performed by a standard set of software. The software may perform a referenced type (such as cylindrical), but is recorded as software in order to capture the use of a standard software package.	POSC	2.1	current
affine	A transformation defined by a linear transformation plus a translation.	POSC	2.1	current
identity	A transformation that converts an m dimensional coordinate system into an n dimensional system. If m > n, the transformation is a projection. If m = n, the transformation is a true identity. If m < n, the transformation is an identity for m coordinates, and 0 for the remaining n-m.	POSC	2.1	current
linear	A standard linear transformation as defined in mathematical literature. It may always be represented by a matrix.	POSC	2.1	current
orthogonal	A linear transformation for which the inverse is a multiple of the adjoint (matrix transpose). If the multiple is 1.0, the transformation is orthonormal.	POSC	2.1	current
polynomial	A transformation defined by a polynomial function of the input variable. The input and output must both be in Rn.	POSC	2.2	current
mathematical	Basic mathematical transformations: polar, cylindrical, spherical, and their inverses.	POSC	2.2.2	current
unknown	Two coordinate systems are known to be related, but the transformation method between them is unknown. There are no parameters for this method.	POSC	2.1	current

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