Dahmen, Wolfgang; Gmelig Meyling, R. H. J.; Ursem, J. H. M. Scattered data interpolation by bivariate \(C^ 1\)-piecewise quadratic functions. (English) Zbl 0724.41003 Approximation Theory Appl. 6, No. 3, 6-29 (1990). Summary: We propose a completely local scheme based on continuously differentiable quadratic piecewise polynomials for interpolating scattered positional data in the plane, in such a way that quadratic polynomials are reproduced exactly. We present some numerical examples and applications to contour plotting. Cited in 5 Documents MSC: 41A05 Interpolation in approximation theory Keywords:quadratic polynomials; numerical examples; applications; contour plotting PDFBibTeX XMLCite \textit{W. Dahmen} et al., Approximation Theory Appl. 6, No. 3, 6--29 (1990; Zbl 0724.41003)