Base Topographic Map 1 : 50 000 in S-JTSK

ZTM 50/S-JTSK started to be produced using digital technology in 2020 from the Data50 cartographic database, updated on the basis of the Fundamental Base of Geographic Data of the Czech Republic (ZABAGED®) and the Geonames database of geographical names of the Czech Republic, as a replacement for the Base Map of the Czech Republic 1:50 000 (ZM 50). It is available as print files in PDF format (CMYK) containing the complete content of the map sheet, in raster TIFF format (RGB, 24-bit colour depth, 508 dpi, LZW compression), and in vector format in SHP and DGN8, enabling the use of ZTM 50/S-JTSK data in GIS and CAD applications, including limited editing. The distribution unit is the ZTM 50/S-JTSK map sheet. In the case of the print PDF, 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, plus space for frame data and marginal information (total PDF area 500 × 790 mm). In the case of the raster TIFF tile, the segment size is 400 × 500 mm (corresponding to 20 × 25 km at map scale). The position of individual tiles in the coordinate system is ensured by world files (TFW). The same spatial extent applies to the distribution units of vector data in SHP and DGN8 formats.