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##
trfm

       'trfm' 'rec'|'cyl' ['x'|'y'|'z'|'r'] ->
            ..[<first-Dataset-Nr> [<last-Dataset-Nr>]]

Generates additional entities for a new coordinate system. The option 'cyl' transforms the global results to cylindrical and 'rec' from cylindrical ones to global cartesian. In both cases the axis of the cylindrical system must be provided. So far only cylindrical systems around the major x, y, z axes are implemented. The first and the last dataset of a range can be specified optionally. The current dataset is selected if no dataset is specified.

The transformation into the cylindrical system takes place in a way that tensors and vectors are transformed into a new local cartesian system which is alligned with the directions of a true cylindrical system. In this way the dimensions are maintained (for example the displacement in angular direction is not transformed into an angle but into a displacement in tangential direction).

The transformation from a cylindrical into a cartesian system works in the same way. In this case the initial values must be defined in a local cartesian system pointing in the directions of the cylindrical system.

Remark: ``rec'' does not wor for stresses so far.

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