OSNI Open Data - 10M DTM - Sheets 1-50

A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly spaced points of known height which, when used with other digital data such as maps or orthophotographs, can provide a 3D image of the land surface. This download contains OSNI 10k sheet numbers 1-50. <div><br /></div><div>This is a large dataset and will take sometime to download. Please be patient. This service is published for OpenData. By download or use of this dataset you agree to abide by the LPS Open Government Data Licence.<div><br /></div><div>Please Note for Open Data NI Users: Esri Rest API is not Broken, it will not open on its own in a Web Browser but can be copied and used in Desktop and Webmaps</div></div>

数字地形模型（Digital Terrain Model，简称DTM）系由已知高度等间距点构成的网格状数字文件，当与地图或其他数字数据如正射影像等相结合时，能够呈现出地表的三维图像。本下载包含OSNI 10k图幅编号1-50。此数据集规模庞大，下载所需时间较长，请耐心等待。本服务旨在开放数据（OpenData）发布。下载或使用本数据集即表示您同意遵守LPS开放政府数据许可。请注意，对于开放数据NI用户：Esri Rest API并未损坏，它不会在网页浏览器中自行打开，但可以复制并在桌面和Web地图中使用。