Base map CR 1:50,000 - colour seamless - 04901130

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基础地理数据基础（Fundamental Base of Geographic Data of the Czech Republic, ZABAGED®）与捷克共和国地理名称数据库Geonames的数字化资料完成生产。数据直接源自IS SMD技术体系下的Data50制图数据库。该数据集文件通过应用服务器服务进行栅格化处理，分辨率为800dpi，采用24位色彩模式并使用统一栅格调色板。数据集以TIFF格式（采用LZW压缩）进行分发。其导出单元为边长平行于S-JTSK基准轴的10×10千米格网区块。所有区块均通过文本文件（TFW）完成坐标配准，适配S-JTSK Krovak EN与WGS 84 / UTM 第33N带两种投影坐标系。