{ "name":"Lidar/IE_GSI_LiDAR_Coverage_OPW_IE26_ITM", "title":"Lidar/IE_GSI_LiDAR_Coverage_OPW_IE26_ITM", "type":"Map Service", "typeKeywords":["ArcGIS Server","Service","Map Service"], "description":"

LiDAR (Light Detection and Ranging) is a remote sensing technology, i.e. the technology is not in direct contact with what is being measured. From satellite, aeroplane or helicopter, a LiDAR system sends a light pulse to the ground. This pulse hits the ground and returns back to a sensor on the system. The time is recorded to measure how long it takes for this light to return.<\/SPAN><\/SPAN><\/P>

Knowing this time measurement scientists are able to create topography maps.<\/SPAN><\/SPAN><\/P>

LiDAR data are collected as points (X,Y,Z (x & y coordinates) and z (height)). The data is then converted into gridded (GeoTIFF) data to create a Digital Terrain Model and Digital Surface Model of the earth. This LiDAR data was collected between Oct.2006 and Jan. 2007. <\/SPAN><\/SPAN><\/P>

This data shows the areas in Ireland for which you can download LiDAR data and contains links to download the data. <\/SPAN><\/SPAN><\/P>

This is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).<\/SPAN><\/SPAN><\/P>

The LiDAR coverage is shown as polygons. Each polygon is 2000m by 2000m in size and holds information on: the location, data provider, owner, licence, published date, capture date, surveyor, RMS error, resolution and a link to download the LiDAR raster data in 2000m by 2000m sections.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "extent":[[391092.0696543289,780907.925145671],[509837.6513337918,860162.3580662071]], "url":"https://gsi.geodata.gov.ie/server/rest/services/Lidar/IE_GSI_LiDAR_Coverage_OPW_IE26_ITM/MapServer" }