naginterfaces.library.fit.dim2_spline_ts_evalv¶
- naginterfaces.library.fit.dim2_spline_ts_evalv(xevalv, yevalv, comm)[source]¶
dim2_spline_ts_evalv
calculates a vector of values of a spline computed bydim2_spline_ts_sctr()
.For full information please refer to the NAG Library document for e02je
https://support.nag.com/numeric/nl/nagdoc_30.2/flhtml/e02/e02jef.html
- Parameters
- xevalvfloat, array-like, shape
The values at which the spline is to be evaluated.
- yevalvfloat, array-like, shape
The values at which the spline is to be evaluated.
- commdict, communication object
Communication structure.
This argument must have been initialized by prior calls to
dim2_spline_ts_sctr()
andopt_set()
.
- Returns
- fevalvfloat, ndarray, shape
If no exception or warning is raised on exit contains the computed spline value at .
- Raises
- NagValueError
- (errno )
On entry, .
Constraint: .
- (errno )
Option arrays are not initialized or are corrupted.
- (errno )
The fitting routine has not been called, or the array of coefficients has been corrupted.
- (errno )
On entry, was outside the bounding box.
Constraint: for all .
- (errno )
On entry, was outside the bounding box.
Constraint: for all .
- Notes
dim2_spline_ts_evalv
calculates values at prescribed points , for , of a bivariate spline computed bydim2_spline_ts_sctr()
. It is derived from the TSFIT package of O. Davydov and F. Zeilfelder.
- References
Davydov, O, Morandi, R and Sestini, A, 2006, Local hybrid approximation for scattered data fitting with bivariate splines, Comput. Aided Geom. Design (23), 703–721
Davydov, O, Sestini, A and Morandi, R, 2005, Local RBF approximation for scattered data fitting with bivariate splines, Trends and Applications in Constructive Approximation, M. G. de Bruin, D. H. Mache, and J. Szabados, Eds (ISNM Vol. 151), Birkhauser, 91–102
Davydov, O and Zeilfelder, F, 2004, Scattered data fitting by direct extension of local polynomials to bivariate splines, Advances in Comp. Math. (21), 223–271
Farin, G and Hansford, D, 2000, The Essentials of CAGD, Natic, MA: A K Peters, Ltd.