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== Irregular grid (scattered data) ==
Schemes defined for scattered data on an [[irregular grid]] are more general.
They should all work on a regular grid, typically reducing to another known method. * [[Nearest-neighbor interpolation]]
* [[Triangulated irregular network]]-based [[natural neighbor]]
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* Least-squares [[spline (mathematics)|spline]]
* [[Natural neighbour interpolation]]
{{anchor|Gridding}}''Gridding'' is the process of converting irregularly spaced data to a regular grid (gridded data).
==Notes==
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