# Modifed Quadratic Shepard

Copyrights (c) 2003 by Andre Ringeler
Modified Quadratic Shepard method for grid interpolation from irregular distributed points. This module is based on Module 660 in TOMS.
QSHEP2D: Fortran routines implementing the Quadratic Shepard method for bivariate interpolation of scattered data (see R. J. Renka, ACM TOMS 14 (1988) pp.149-150).
Classes: E2b. Interpolation of scattered, non-gridded multivariate data.

## Parameters

Points
Input Shapes
Attribute
Table field
Target Grid
Choice
  Available choices: user defined, grid
Quadratic Neighbors
Integer
  Minimum: 5.0
Weighting Neighbors
Integer
  Minimum: 3.0
Left
Floating point
Right
Floating point
Bottom
Floating point
Top
Floating point
Cellsize
Floating point
Columns
Integer
Rows
Integer
Grid
Output Data Object
Grid system
Grid system
Grid
Output Grid