Base map CR 1:50,000 - colour seamless - 07201190

Since 2002, the ZM 50 is produced using digital technology from the Fundamental Base of Geographic Data of the Czech Republic (ZABAGED®) and the database of geographic names of the Czech Republic Geonames. The data are derived directly from Data50 cartographic database of IS SMD technology line. These files are by the application server service rasterized with resolution of 800 dpi, 24 bit colours and unified raster palette. The distribution is in TIFF format (LZW compression). The export units are 10x10 km segments with edges parallel to S-JTSK datum axes. Segments are georeferenced in the coordinate system using text files (TFW) for S-JTSK Krovak EN and WGS 84 / UTM zone 33N projections.自2002年起，ZM 50数据集依托捷克共和国基础地理数据基础库（ZABAGED®）与捷克共和国地名数据库Geonames的数字技术进行生产。该数据直接源自IS SMD技术体系下的Data50制图数据库。依托应用服务器服务对相关文件进行栅格化处理，栅格分辨率为800dpi，色彩位深为24位，并采用统一的栅格调色板。数据以TIFF格式发布（采用LZW压缩算法）。导出单元为边长平行于S-JTSK基准轴的10×10千米格网区块。上述格网区块通过对应S-JTSK Krovak EN与WGS 84 / UTM zone 33N投影坐标系的文本文件（TFW）实现坐标地理配准。