# Transformed coordinate systems

 A nodal transformation is used to define a local coordinate system for: the definition of concentrated forces and moments; the definition of displacement and rotation boundary conditions; the definition of linear constraint equations; and the output of vector-valued quantities. A nodal transformation cannot be used to specify a local coordinate system for defining: nodal coordinates—see Specifying a local coordinate system in which to define nodes or Specifying a local coordinate system for the nodal coordinates instead; or material properties or rebars—see Orientations instead. The following topics are discussed:
 Related Topics In Other Guides About Prescribed Conditions *TRANSFORM Transforming results into a new coordinate system Methods for creating a datum coordinate system

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