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Origin C Reference
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Interpolation
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2.1.17.5 Interpolation
Interpolation-GlobalFunction
Functions
Name
Brief
Example
Data_table
Table lookup with interpolation.
Examples
ocmath_1d_spline_deriv
Evaluates a cubic spline and its first three derivatives from its B-spline representation.
Examples
ocmath_1d_spline_evaluate
Evaluates a cubic spline from its B-spline representation.
Examples
ocmath_1d_spline_fit
Computes a cubic spline approximation to an arbitrary set of data points. Least-squares cubic spline curve fit, automatic knot placement, one variable.
Examples
ocmath_2d_interpolate
This function interpolates or extrpolates an input matrix to find Z values at given X and Y coordinates.
Examples
ocmath_2d_spline_eval
Calculates values of a bicubic spline from its B-spline representation.
Examples
ocmath_2d_spline_grid
This function computes a bicubic spline approximation to a set of data values, given on an equi-spaced rectangular grid in the x-y plane. The smoothness of fit can be controlled.
Examples
ocmath_2d_spline_interpolant
Computes a bicubic spline interpolating surface through a set of data values, given on a rectangular grid in the x-y plane.
Examples
ocmath_3d_interpolate
Interpolation. Three modes are available: Linear, Spline, B-Spline cf. Dierckx P: an algorithm for smoothing, differentiation and integration of experimental data using spline functions, J.Comp.Appl.Maths 1 (1975) 165-184.
Examples
ocmath_free
Free memory allocated by ocmath functions(calling NAG_FREE).
Examples
ocmath_free_2dSpline_struct
Free all pointer type elements of struct ocmath_2dSpline by ocmath functions(calling NAG_FREE).
Examples
ocmath_free_comm_struct
Free all pointer type elements of struct ocmath_Comm by ocmath functions(calling NAG_FREE).
Examples
ocmath_free_spline_struct
Free Free all pointer type elements of struct ocmath_Spline by ocmath functions(calling NAG_FREE).
Examples
ocmath_image_lines_profile
Computes the intensity along a straight line or a polyline in an image.
Examples
ocmath_interpolate
Do interpolation with mode of Linear, Spline or B-Spline.
Examples
ocmath_parametric_interpolate_eval
Get interpolated data using parametric interpolation. For every dimension of pData call the function ocmath_interpolate to interpolate.
Examples
ocmath_parametric_interpolate_range
Compute parameter data of parametric interpolate cf. E.T.Y. Lee, Choosing nodes in parametric curve interpolation, Computer-Aided Design 21 (1989), 363-370.
Examples
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Data_table
ocmath_1d_spline_deriv
ocmath_1d_spline_evaluate
ocmath_1d_spline_fit
ocmath_2d_interpolate
ocmath_2d_spline_eval
ocmath_2d_spline_grid
ocmath_2d_spline_interpolant
ocmath_3d_interpolate
ocmath_free
ocmath_free_2dSpline_struct
ocmath_free_comm_struct
ocmath_free_spline_struct
ocmath_image_lines_profile
ocmath_interpolate
ocmath_parametric_interpolate_eval
ocmath_parametric_interpolate_range
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