Interpolator options

The argument --interp_values is used to select the **lateral ** and **longitudinal ** interpolation methods. If this argument is not provided, the linear interpolation is used as the default interpolation method for the lateral and longitudinal directions. This is generally satisfactory and is robust in case of brupt change in the bathymetry.

💡 The interpolation of X and Y coordinates (for the nodes) is described in the Mesher options.

For advanced user, the interpolation methods implemented in TatooineMesher are:

--interp_values	Lateral (= crosswise)	Longitudinal
Two Consecutive 1D interpolators
LINEAR	linear (degree 1)	linear (degree 1)
B-SPLINE	B-spline (degree 3)
AKIMA	B-spline (degree 3)
PCHIP	Piecewise Cubic Hermite Interpolating Polynomial (degree 3)
CUBIC_SPLINE	Cubic spline (degree 3)
Global 2D interpolator
BILINEAR	bilinear (2x degree 1)
BICUBIC	bilinear (2x degree 3)
BIVARIATE_SPLINE (not checked)	Smooth bivariate spline approximation (2x degree 3)

See the reference to have a look at the comparison of these methods on a validation test case.