Radial basis function interpolation

Table of Contents

• Description
• Options
• YAML example

Description

This method supports source fields that are defined on points at the grid corners, cells, or edges. It is based on "Reinheimer, J., 2018: Vector Field Interpolation using Radial Basis Functions. pp 68.".

For each target point this method searches for the n nearest neighbours and then computes the weights based on the distances between the source points and the target point using the selected radial basis functions.

Source field

Options

• Number of source points per target point (default: n: 9)
• Scaling factor (default: rbf_scale: YAC_INTERP_RBF_SCALE_DEFAULT)
• Radial basis function (default: rbf_kernel: gauss_kernel)

  • gauss_kernel

    Gaussian function

    Target field

    n = 1	n = 4	n = 9

YAML example

interpolation:
  - rbf
      n: 4
      rbf_kernel: gauss_kernel