The Measurement Tool is an integrated tool within the Annotation Menu.
One of the interests of this tool compared to the other annotations (point, line, polygon, etc...) is that it allows measuring directly on the raster or on the point cloud (3D) displayed without creating annotations saved in the layers.
To access the tool, click on the ruler logo at the bottom of the annotation tools menu.
2. Point measurement
2.1 Create a point measurement
Select "POINT" on the Measure tool and click on the zone to measure to create the point.
- The position of the point in WGS84 (Lat, Long) and in the Site CRS (Global Coordinates).
- If there is an elevation raster available on the Site (for example DSM) and in the current survey.
- Getting the point’s elevation.
Select on which raster the measurement is done by opening the dropdown menu.
Save this point as an annotation by clicking on the floppy disk icon.
2.2 Compare a point measurement
Click on "COMPARE WITH" to compare a measurement point between 2 rasters.
Select a different raster from the one in the current survey. And compare the Elevation value.
3. Distance & Elevation profile
3.1 Create a line measurement
Select "DISTANCE & ELEVATIONS" on the Measure tool and draw a line on the zone to measure. The distance is also measured (projected distance to a flat plan).
Note: Draw a polyline with the left click. Click again on the last point to end the line.
Click on "ELEVATION PROFILE", a pop-up window displays the elevation profile.
Save this line as an annotation by clicking on the floppy disk icon.
3.2 Elevation profile options
In the Elevation profile window there are some options:
- Compare To: with the drag-down menu, select another raster to obtain another elevation profile for comparison. The second curve is displayed with another color.
- 1:1 ratio: change the ratio of the curves.
- EXPORT AS: different formats are available: JSON, Shapefile, DXF, and FPC.
- Move the mouse along the curves to read the values. The point is highlighted on the line in the map view.
- Choose on which raster the measurement is made.
3.3 Compare a line measurement
Draw a line (see paragraph 3.1) and click on "COMPUTE 3D MEASURES" to deploy the menu and get access to "COMPARE WITH".
Click on "COMPARE WITH" to compare a measurement line between 2 rasters of different surveys.
4. Area & Volume
4.1 Create a polygon measurement
Select "AREA & VOLUME" on the Measure tool and draw a polygon on the zone to measure to obtain a 2D surface and perimeter measurement.
Note: Draw a polygon with the left click. Click again on the last point to end the polygon.
4.2 3D measurements
Click on "COMPUTE 3D MEASURES" to obtain 3D measurements.
Select the raster layer the measures will be applicable.
Click on the floppy disk icon to save the polygon as an annotation.
4.3 Compare a polygon measurement
Click on "COMPARE WITH" and select a different raster layer of the current or another survey to compare the values.
Note: For all other information concerning the calculation of volumes, see Volume Calculation.
5. 3D View Measurement Tool
Measurements of points, distances, and areas are also possible in 3D view and are displayed in the same way as in 2D view thanks to a pop-up window.
Click on the yellow boxed button below to access or exit the 3D view.
Note: To learn more about the 3D view, see 3D Viewer.