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Piecewise Chebyshev approximation of experimental data. (Russian) Zbl 0624.65009
Given a-priori fixed error, the problem of experimental data approximation using a piecewise polynomial (in some Chebyshev system) with free conjugation nodes is investigated. The properties of the approximation with minimal number of nodes are studied. A computational scheme for such optimal approximation and results of testing two different algorithms are presented.
Reviewer: C.Simersk√°

MSC:
65D10 Numerical smoothing, curve fitting
41A50 Best approximation, Chebyshev systems
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