River map 1st revision series 8

Mosaic of old river maps in ECW made from old river maps that have been scanned. After this, the leaf edges have been removed and the images are reorientated in RD. After this, a mosaic has been made in ECW format per print, series or revision. A corresponding index file (shape) can be found from which year each individual card is. Hollandsche IJssel/[Rijkswaterstaat]. — Scale 1:2.500. — [first revision]. — [the Hague: Topographical Set-up, 1902-1924]. —1 series in 15 sheets: lithography; various formats. Some sheets with later reprints. A sketch map of the Hollandsche IJssel river has been added to the marker. — Scale 1:25,000. — The Hague: N.V. Wed. Ahrend & Son, [z.j.]. However, this card is most likely not part of the depositor.本数据集以扫描获取的老旧河川地图为数据源，制作得到增强压缩小波格式（ECW）的河川地图镶嵌图。后续工序包括去除图幅边缘冗余区域、将图像对齐至RD坐标系（荷兰国家大地坐标系），随后按照单幅印刷件、地图系列或修订版本分别生成ECW格式的镶嵌图集。可通过配套的SHAPE格式索引文件查询单幅地图的制作年份。 该批地图的元数据关联荷兰艾瑟尔河（Hollandsche IJssel）区域，源自荷兰皇家水利工程局（Rijkswaterstaat）： — 比例尺1:2500，为首次修订版本，由海牙地形制图机构于1902-1924年间刊行，该系列共计15幅图幅，采用平版印刷工艺，尺寸规格不一，部分图幅存在后期重印版本，标注物附带一幅荷兰艾瑟尔河的示意图。 — 另有一幅地图比例尺为1:25000，由海牙的N.V. Wed. Ahrend & Son公司于未标注出版年份刊行，但该幅地图大概率不属于本次捐赠的馆藏数据集范畴。