You can use the Location Tool and the Line Tool to measure Nearmap's 3D imagery. This articles explains how and covers:
Use the location tool to pinpoint a spot on a surface.
- While in 3D, select the location tool.
- Click on a location in the map. When you access the Location tool you will see a disk that follows the surface.
Once you drop the pin onto the terrain, a balloon appears about 5m at true vertical above the pin.
What you need to know about the location pin:
- A pin placed in the open will result in a flag raised to about 5m above the surface. This may be the ground, or any other open surface, such as a car park rooftop.
- A pin placed near an object like a building will result in the flag being raised above the height of that object, so that the flag can be visible from multiple directions.
- In all cases the elevation returned is the point that the user clicks on the surface (the 'pin').
The displayed information includes:
- The address of the location, if any.
- The latitude and longitude of the location in two modes: decimal, e.g. -33.694841, 150.317237, and degrees/minutes/seconds, e.g. -33°41'41", 150°19'2".
- WATCH button, which you can use to add the location to your watchlist. Please refer to Managing Your Watchlist for more information.
- If there are oblique photos for the location, you can click VIEW OBLIQUE PHOTOS, as explained in Panorama and Oblique Imagery.
- Elevation value relative to mean sea level.
3. Display your units of choice from the dropdown.
Removing the location pin
To remove a pin, click it to select it, then click the trash icon or press the Delete key on your keyboard.
Watch the video: MapBrowser - 3D Viewer & 3D Export
You can measure lines in 3D using the Line tool.
- When you are in 3D view, click the Line tool.
- Zoom into the property you want to measure, then draw a line along the slope you want to measure.
- When you access the Line tool you will see a disk that
- Left-click to start the line, double-click to end the line.
The measurements include:
- Line length - the distance between the both ends of the line in meters, kilometers, feet, yards, miles, or nautical miles.
- Pitch - the angle of the line relative to the horizon in degrees or rise/run ratio.
- Relative height - the difference in height between both ends of the line in meters, kilometers, feet, yards, miles, or nautical miles.
- You can choose the colour and brightness of the line.
- By default the units are displayed on the line itself. You can opt to hide these by unchecking the Line box in the Feature Layer panel
Once you are done, you can zoom in and out, pan, and tilt, and the line will still be there.
Use the Area tool to measure the area, perimeter and pitch of a surface on Nearmap’s 3D imagery.
- To access the Area tool, go to the location you want, then use the compass tool to switch to 3D view.
- When you are in 3D view, click the Area tool.
- Draw out a polygon by single-clicking on each desired vertex.
When you access the area tool you will see a disk that snaps to the surface nearest to your cursor. Maintain the angle of this disc to ensure you draw the polygon on the one plane.
- To close the polygon, hover over the start of your polygon until you see a small circle, then left-click.
- You can see the area, perimeter and pitch of the polygon.
- Use the dropdown against each measurement to change its units.
- Use the color tools to adjust the polygon’s color settings.
- By default the units are displayed on the polygon itself. You can opt to hide these by unchecking the Area, Line and/or Texture boxes in the Feature Layer panel
Check your polygon
Check the area you have drawn is on the one plane
The area may look fine from your original viewpoint, but because the area tool snaps to the nearest surface, it may accidentally pick up an object, such as a tree or another structure.
- Rotate the imagery to ensure the polygon is tracing the surface you want
- Drag and drop a vertex to adjust, if needed.
Drawing multiple faces
For best results draw one plane at a time. Drawing several planes at once may give you unpredictable results.
|Drawing both faces of pitched structure|
Note the irregular surface produced
|Drawing each face separately|
Each face is clean and one its own plane.
Ensure the area you draw makes sense
If you draw self-intersecting sides, you will get an error.