Arguments of STPNT.

  Note that the arguments of STPNT depend on the solution type :

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When starting from a fixed point, the subroutine STPNT must have three arguments, namely, (NDIM,U,PAR). (See demo ab).

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When starting from an analytically or numerically known space-dependent solution, STPNT must have four arguments, namely, (NDIM,U,PAR,T). Here T is the independent space variable which takes values in the interval [0,1].
(Demo exp.)

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Similarly, when starting from an analytically known time-periodic solution or rotation, the arguments of STPNT are (NDIM,U,PAR,T), where T denotes the independent time variable which takes values in the interval [0,1]. In this case one must also specify the period in PAR(11).
(Demos frc, lor, pen.)

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When using the @fc command (Section 3.5) for conversion of numerical data, STPNT must have three arguments, namely, (NDIM,U,PAR). In this case only the parameter values need to be defined in STPNT. (Demos lor and pen.)