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XonGrid

XonGrid is a free Excel library of functions to perform 1D, 2D, 3D, 4D and arbitrary dimension (ND) interpolations from scattered data.

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Website http://xongrid.sourceforge.net/
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Platform
Features
  • Available for 32 and 64 bits Excel versions
  • Multivariate interpolation from scattered data
  • Various interpolation methods: Linear, Akima, Bilinear, Nearest-neighbor, Natural-neighbors and Kriging
  • 2D Cubic Spline Approximation
  • Gaussian Process Regression
  • Scaling of non-homogeneous parameters
  • Array Formulas to speed up multiples interpolation
  • Support for missing values and errors
  • User defined interpolation
  • Visual Basic Interface