The geometric-transformation command is used to construct a coordinate-transformation object, which transforms frame element stiffness and resisting force from the basic to the global coordinate system. The command has at least one argument, the transformation type. Each type is outlined below. This is the same command that is available in OpenSees.
The type of transformation created and the additional arguments required depends on the $transfType provided in the command.
The following commands contain information about $transfType and the $args required for each of the available geometric transformation types: