IDA -- interactive data approximation package. The present paper describes the structure of a complex interactive system for interpolation and smoothing of functions of one or two variables on both regular and general meshes using various types of splines (including shape preserving ones). The role of dialogue in three phases of processing (preprocessing, solution, postprocessing) is emphasized.

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  1. Hřebíček, Jiří; Kučera, Jan; Švenda, Petr; Vasilenko, Vladimír A.: IDA -- interactive data approximation package (1990)