Point falls in the same interval its index value can be returned It caches the previous value of an index lookup. This workspace stores state variables for interpolation lookups. Which is a kind of iterator for interpolation lookups. The state of searches can be stored in a gsl_interp_accel object, This function returns the name of the interpolation type used by interp. The following related functions are available: const char * gsl_interp_name ( const gsl_interp * interp ) ¶ The resulting curve and its first derivativeĪre guaranteed to be continuous, but the second derivative may be The interpolated function is piecewise cubic Therefore, minima and maxima can only occurĮxactly at the data points, and there can never be spurious oscillationsīetween data points. Steffen’s method guarantees the monotonicity of the interpolating functionīetween the given data points. Uses the non-rounded corner algorithm of Wodicka. Non-rounded Akima spline with periodic boundary conditions. gsl_interp_type * gsl_interp_akima_periodic ¶ Non-rounded Akima spline with natural boundary conditions.
Resulting periodic interpolation will have a discontinuity at theīoundary. Note that the last point in theĭata must have the same y-value as the first point, otherwise the The derivatives at the firstĪnd last points are also matched. Is piecewise cubic on each interval, with matching first and secondĭerivatives at the supplied data-points. gsl_interp_type * gsl_interp_cspline_periodic ¶Ĭubic spline with periodic boundary conditions. The second derivative isĬhosen to be zero at the first point and last point.
Piecewise cubic on each interval, with matching first and secondĭerivatives at the supplied data-points. gsl_interp_type * gsl_interp_cspline ¶Ĭubic spline with natural boundary conditions. Number of terms in the interpolating polynomial is equal to the number Introduces large oscillations, even for well-behaved datasets. Interpolating small numbers of points because polynomial interpolation gsl_interp_type * gsl_interp_polynomial ¶
This interpolation method does not require anyĪdditional memory. The interpolation library provides the following interpolation types: type gsl_interp_type ¶
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