Cartometric investigation of the accuracy plan of Lviv in 1894
Ancient maps and plans are important sources of information for multifaceted knowledge of the past. In many studies, the accuracy parameters of spatial data are in demand. The purpose of our work is to study the geometric accuracy of the Lviv plan 1894 by Józef Khovanec. The methodology for studying the accuracy assessment is based on the transformation and geometric analysis of sets of identical points in the ancient plan and the modern reference one. For such a transformation, the Helmert transformation with four parameters and multiquadratic interpolation methods are used.