The mobile version of ArcGIS Earth provides basic 3D analysis tools that perform quick measurements on any 3D contents or objects in the scene. It calculates the analysis result in real time, making work in the field efficient and effortless.

Tap the Toolbox button at the bottom of the screen and select the Measure and Analysis tool . Choose from the following options to start a measurement:

- Measure —Measure coordinates and elevation of a location, measure distance of a path, and measure area on the ground.
- 3D Measure —Measure the direct, vertical, and horizontal distance between two points in a scene.
- Line of sight —Create line of sight analysis given an observer point and target point.
- Viewshed —Create viewshed analysis given an observer point.

## Measure a location

Measure the longitude, latitude, and elevation of a location on the ground surface by moving the crosshairs and tapping Add . The measured value in the Location and Elevation result shows the coordinates of the last point added.

Measure the path distance on the ground surface by adding two or more location points. The measured value in the Distance result shows the total length of the path segments.

Measure the area on the ground surface by adding three or more location points. The measured value in the Area result shows the calculated area of the polygon.

Tap Complete to finish the measurement.

Tap Clear to remove the graphic and start a new measurement.

Tap Undo to revert to the previous step.

Tap Copy to copy the measured result to your clipboard.

Tap the Elevation, Distance, or Area result to temporarily change the measurement units. The default honors the units in the app Settings menu.

## Measure 3D distance

Perform a measure of direct-line 3D distance between two points in the scene. Tap Add to drop a start point, move the crosshairs, and tap Finish to drop the endpoint to complete the measurement. Tap Undo to reset the start point.

The result shows the measured value of the Direct, Vertical, and Horizontal distance. Tap Copy to copy the result to your clipboard.

## Line of sight analysis

Perform line of sight analysis by specifying an observer point and a target point. Once finished, the visible segment is colored in green and the obstructed segment is colored in red.

- Use the anchor point to help locate your point accurately and tap Add to add an observer point.
- Tap Back to undo the observer point or tap Finish to add a target point.

## Viewshed analysis

Perform viewshed analysis by specifying an observer point. Once finished, the visible area is colored in green and the obstructed area is colored in red.

- Use the anchor point to help locate your point accurately and tap Add to add an observer point.
- Update viewshed parameters to adjust the viewshed analysis result on the fly.
- Horizontal angle —The horizontal angle of the field of view. Values range from 1 to 360 degrees.
- Vertical angle —The vertical angle of the field of view. Values range from 1 to 360 degrees.
- Heading —The heading of the viewshed. Values range from 0 to 360 degrees.
- Tilt —The tilt of the viewshed. Values range from -90 to 90 degrees.
- Distance —Specifies the maximum distance from the observer. Distance ranges from 100 meters to 5,000 meters.
- Height —The absolute elevation of the viewshed observer. Height ranges from 0 to 2,000 meters.