Base map CR 1:50,000 - colour seamless - 06801090

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数据集便依托捷克共和国地理数据基础库（Fundamental Base of Geographic Data of the Czech Republic, ZABAGED®）以及捷克共和国地理名称数据库Geonames的数字化资料进行生产。该数据直接源自IS SMD技术线的Data50制图数据库。上述文件通过应用服务器服务完成栅格化处理，分辨率为800 dpi，采用24位色彩及统一栅格调色板。数据分发格式为TIFF（LZW压缩）。导出单元为10×10千米的图幅，其边与S-JTSK基准轴平行。该类图幅通过文本文件（TFW）实现坐标系统地理配准，适配S-JTSK Krovak EN及WGS 84 / UTM第33北带投影。