Format

FITSPL(x, z, id) or FITSPL(x, 0, id, n)

Description

Returns the interpolated value or n-th derivative of the interpolated value of the Reference_Spline element.

Example

<Force_Scalar_TwoBody

  id             = "301001"

  type           = "Force"

  i_marker_id    = "10506"

  body1_id       = "105"

  j_marker_id    = "10706"

  body2_id       = "107"

  val_expression = "FITSPL(DM(10503,10703),0,301002)"

/>

<Reference_Spline

   id                  = "301002"

   num_xy_pair         = "5"

   linear_extrap       = "FALSE">

                         0.0000000E+00  -2.2000000E+02

                         2.0000000E+02  -2.2000000E+02

                         2.3000000E+02  -2.2000000E+02

                         3.7322400E+02  -1.1000000E+02

                         5.0000000E+02  -0.1000000E+02

                         5.1000000E+02  -1.2000000E+02

                         6.0000000E+02  -1.3300000E+02

</Reference_Spline>

Arguments

x

The independent variable of the curve.

z

The independent variable z of the surface.  Use z = 0 if only one curve is being defined.

id

The ID of the Reference_Spline element.

n

The order of the derivative desired. Not applicable with surfaces. Must lie between 0 and 2.

Comments