Base map CR 1:50,000 - colour seamless - 05601160

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数据集采用源自捷克共和国基础地理数据核心库（Fundamental Base of Geographic Data of the Czech Republic, ZABAGED®）与捷克共和国地理地名数据库Geonames的数字技术进行生产。该数据直接取自IS SMD技术线路的Data50制图数据库。经应用服务器服务栅格化处理后，文件分辨率为800每英寸点数（dpi）、采用24位色彩与统一栅格调色板。数据以标签图像文件格式（TIFF）分发，采用LZW压缩算法。导出单元为边长与S-JTSK基准轴平行的10×10公里格网区块。各区块通过TFW文本文件完成地理配准，适配S-JTSK Krovak EN与WGS84/UTM第33北带两种投影坐标系。