Lidar (Light DetecƟon And Ranging) is a type of remote sensing. It works like radar, except it uses light or laser beams instead of radio waves. www.library.carleton.ca/find/gis Page 1 Display Display LiDAR Data LiDAR Data This Help Guide will show you how to: ArcMap Display Lidar data from shapefile in 3D using ArcScene Display LAS files in ArcMap & ArcScene by creaƟng a LAS Dataset Global Mapper Display raw LAS files in Global Mapper in 3D *Note: Lidar Intensity (x, y, z, i) is also recorded with most lidar data. It records the reflecƟvity of a surface. This data can be used to create a geo‐referenced image of the landscape. Lidar intensity can be relaƟve to its surroundings, and it is easily influenced by current condiƟons. It should be researched well before use. *Note: Lidar points are commonly grouped into by 1st returns and 2nd returns. The 1 returned are also known as the “Non‐Ground” points since they returned to the sensor first, meaning they probably reflected off trees or buildings. Conversely, the 2nd returns are someƟmes called the “Ground Returns” since these points took longer to return to the sensor , and probably reflected off of the ground. hƩp://www.vliz.be/v/images/thumb/2/29/ Lidar_fig_03.jpg/250px‐Lidar_fig_03.jpg Figure 1: A 3D view of ground (red) and non‐ground (green) Lidar point shapefiles in ArcScene. The Ɵme it takes for the laser to travel from the sensor (oŌen mounted on a plane or helicopter) to the surface and back is used to calculate the distance to an object. Lidar can be used to provide highly accurate elevaƟon data. The data is collected as points with X, Y, Z values. These points can be also be used to create DEMs.
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Display LiDAR Data - MacOdrum Library · *Note: Lidar Intensity (x, y, z, i) is also recorded with most lidar data. It records the reflec vityof a surface. This data can be used
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Lidar (Light Detec on And Ranging) is
a type of remote sensing. It works like
radar, except it uses light or laser beams
instead of radio waves. www.library.carleton.ca/find/gis
Page 1
Display Display LiDAR DataLiDAR Data
This Help Guide will show you how to:
ArcMap
Display Lidar data from shapefile in 3D using ArcScene
Display LAS files in ArcMap & ArcScene by crea ng a LAS
Dataset
Global Mapper
Display raw LAS files in Global Mapper in 3D
*Note: Lidar Intensity (x, y, z, i) is also recorded with most lidar data. It records the reflec vity of a surface.
This data can be used to create a geo‐referenced image of the landscape. Lidar intensity can be rela ve to its
surroundings, and it is easily influenced by current condi ons. It should be researched well before use.
*Note: Lidar points are commonly grouped into by 1st returns
and 2nd returns. The 1 returned are also known as the
“Non‐Ground” points since they returned to the sensor first,
meaning they probably reflected off trees or buildings.
Conversely, the 2nd returns are some mes called the “Ground
Returns” since these points took longer to return to the sensor ,
and probably reflected off of the ground.
h p://www.vliz.be/v/images/thumb/2/29/Lidar_fig_03.jpg/250px‐Lidar_fig_03.jpg
Figure 1: A 3D view of ground (red) and non‐ground (green)