While most line of sight parameters can be updated directly in the scene by interacting with a selected object, you can also control all of its aspects on the Properties tab of the Exploratory Analysis pane.
Select a line of sight to update
To modify the property values for an individual line of sight object, it must first be selected. Select a single line of sight either by clicking the observer or target point in the scene or using the following options available in the navigation box at the top of the Properties tab:
Select Next —Cycle the selection forward through the existing lines of sight in the scene. When the desired line of sight is selected, you can update its values and colors.
Select Previous —Cycle the selection in reverse order through the existing lines of sight.
Select All—All lines of sight in the scene are selected. Changes to any property values are applied to all lines of sight.
- Delete —The selected lines of sight are removed from the scene and the next line of sight is selected.
Clear a selection by clicking away from the lines of sight in the scene, ensuring the creation method tool is still active.
Update an interactive line of sight using the selection handles
Upon selection, interactive handles display allowing direct manipulation of the object. The circular disk can be dragged to a new location, updating the x-, y-, and z-values for the observer or target point. The green handle changes the elevation of the point.
The observer and target control points honor the option to navigate belowground for the scene. Therefore, if you need to move control points below the ground elevation surface, you will need to enable the Navigate Underground option on the Appearance tab for the selected elevation surface in the Contents pane. This property applies a 2-meter offset from the ground to ensure the point remains above ground when the scene changes the ground surface level of detail.
Update an interactive line of sight using the Properties tab
Use the Properties tab in the Exploratory Analysis pane to iteratively select through your analysis objects, type any necessary modifications, or optionally click Delete to remove an object. To clear a selection, you must click away from the object in the view.
Global properties affect all existing lines and any future lines of sight created. Expand the Global Properties heading to modify the width of sight lines and change the color for the wireframe. You only see the wireframe for lines of sight when you change the elevation. A vertical wireframe line tethers the object to the ground. Here you can also choose whether you want to extend the lines past their target to their maximum distance. The Extend lines to maximum disance option shows the remaining range. You can also choose to view the on-screen display feedback. The Show edit overlay option opens a control to display changing values, and you can type new handle values. The Show intersection distance option displays labels in the scene showing the distance from the observer to the first blocking intersection point for each line of sight. The values will be shown using the Maximum Distance units from the Create tab. At any time, the Restore Defaults button can be used to return all global properties to their default values.
The color representing what the observer can see.
Not Visible Color
The color from the first obstruction point to the maximum distance representing what the observer cannot see.
Out of Range Color
The color representing visibility farther than the maximum distance.
The color of the wireframe overlay that surrounds the line of sight.