This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.

# InterpolationOrder

 InterpolationOrder is an option for Interpolation, as well as ListLinePlot, ListPlot3D, ListContourPlot and related functions, that specifies what order of interpolation to use.
• InterpolationOrder->n specifies that polynomials of degree n should be fitted between data points.
• For multidimensional data, the polynomials are taken to be of degree n in each variable.
• InterpolationOrder->None specifies that data points should be joined without interpolation.
• InterpolationOrder->0 yields a collection of flat regions, with steps at each data point.
• InterpolationOrder->1 joins data points with straight lines in 2D, and with piecewise polygonal surface elements in 3D.
• Higher interpolation orders generally lead to increasingly smooth curves or surfaces.
• In functions such as NDSolve, InterpolationOrder->All specifies that the interpolation order should be chosen to be the same as the order of the underlying solution method.
Use different interpolation orders for curves:
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Use different interpolation orders for surfaces:
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Use different interpolation orders when constructing an InterpolatingFunction:
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