Measure Point Cloud
To measure point cloud data, select Measurements from the app toolstrip. The app opens a Measurements tab. You can measure point cloud attributes such as distance, angle, and volume using the tools on this tab.
To measure an attribute of the point cloud, select a measurement tool on the app toolstrip, then interactively select points on the point cloud to return the corresponding measurement.
Distance — Measure the distance between any two points in the point cloud.
Elevation — Measure the elevation between any two points in the point cloud.
Location — Obtain the xyz-coordinates of a point.
Angle — Select three points on the point cloud to measure the angles of the triangle defined by the points.
Volume — Measure the volume inside a cuboid region on the point cloud. You can interactively adjust the limits and the size of the cuboid.
The app deletes all your measurements in the current signal when you select Close Measurements.
Use the Color and Visualize options for better visualization while you measure the point cloud. For more information, see Visualize Point Cloud Using Color and Camera Views.
Use Keyboard Shortcuts to Navigate
You can use these keyboard short cuts in the Measurements tab of the Lidar Viewer app.
Click Esc to undo your measurement tool selection.
Click R to enable rotation. You can use these controls in the rotate mode.
Action Keyboard Shortcut Example Move forward or backwards through the scene. The camera and the target can move
w — Forward
s — Backward
Move left or right through the scene. the camera and the target can move.
a — Left
d — Right
Look around the scene (pitch/yaw rotation of the camera). Camera position is fixed, target moves.
Up arrow — Camera pitches up
Down arrow — Camera pitches down
Left arrow — Camera turns left in yaw
Right arrow — Camera turns right in yaw
Roll the scene (roll rotation of the camera)
q — Camera moves clockwise. (Scene appears to move counterclockwise.)
e — Camera moves counterclockwise. (Scene appears to move clockwise.)
Rotate the scene (rotate the camera around the point cloud). Camera position changes, target is fixed.
Shift + Left or Right — Camera orbits horizontally around the point cloud. (Scene appears to stand still as camera moves externally around it horizontally.)
Shift + Up or Down — Camera orbits vertically around the point cloud. (Scene appears to stand still as camera moves externally around it vertically.)
Zoom in or out
z — Zoom in
x — Zoom out
Look at a view plane
1 — XY
2 — YX
3 — XZ
4 — ZX
5 — YZ
6 — ZY
Camera positioned in the selected plane with a line of sight to the center of the plot.
Switch between rotate and pan Spacebar — Press and hold the spacebar to switch the interaction to pan. Release the spacebar to switch back to rotate. Rotate in X-, Y-, and Z- dimensions T — Adds rotate interaction in the third dimension.