Preparation of a color-reduced variant of the official city map of the district Mettmann into a grid dataset for the presentation in the Geoportal. The official city map 1:15000 depicts the ten district cities and is part of the “Amtliche Stadtkartewerk Ruhrgebiet — Rheinland — Bergisches Land”. It is offered on several scales, colors and data structures. Limit scales of data depending on the data preparation: 1:7,000 and 1:30,000.
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