Base map CR 1:50,000 - colour seamless - 07800960

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（ZABAGED®）与捷克共和国地理名称数据库Geonames的数字化资料制作生成。其数据直接源自IS SMD技术线的Data50制图数据库。上述文件经应用服务器服务完成栅格化处理，分辨率为800dpi，采用24位色彩模式并使用统一的栅格调色板。数据以TIFF格式（采用LZW压缩算法）分发。导出单元为边长平行于S-JTSK基准轴的10×10公里幅块。各幅块通过文本文件（TFW）完成坐标地理配准，适配S-JTSK Krovak EN及WGS 84 / UTM第33N区两种投影坐标系。