Base Topographic Map 1 : 250 000 in S-JTSK

ZTM 250/S-JTSK was created from 2021 onwards using digital technology from the Data250 cartographic database, updated on the basis of the Fundamental Base of Geographic Data of the Czech Republic (ZABAGED®) and the Geonames database of the Czech Republic, as a replacement for the Base Map of the Czech Republic 1:200 000 (ZM 200). It is available as PDF print files (CMYK) containing the complete map sheet content, in raster TIFF format (RGB, 24-bit colour depth, 508 dpi resolution, LZW compression), and in vector formats SHP and DGN8, which allow the use and, to a certain extent, editing of ZTM 250/S-JTSK data in GIS and CAD applications. The ZTM 250/S-JTSK map sheet serves as the distribution unit. In the case of a PDF print file, it covers an area of 400 × 500 mm with an overlap of 20 mm in the east–west direction and 10 mm in the north–south direction, as well as space formarginal and extramarginal information (total PDF size 500 × 720 mm). In the case of a TIFF raster tile, the segment measures 400 × 500 mm (100 km × 125 km at map scale). The positioning of individual tiles within the coordinate system is provided by world files (TFW). The same area is covered by the vector data distribution units in SHP and DGN8 formats.