Linear Line Of Sight (Defense)

ArcGIS Pro 3.4 | | Help archive

Available with Advanced license.

Available with 3D Analyst license.

Summary

Creates lines of sight between observers and targets.

Usage

  • This tool uses the Construct Sight Lines and Line Of Sight tools from the 3D Analyst toolbox.

  • The observer is the start point and the target is the endpoint of the line used to determine visibility.

  • One or more observers and one or more target point features will be used.

  • All observers are matched with all targets.

  • Resulting lines are colored to show visible sections (green) and nonvisible sections (red).

  • The following fields are added to the Output Sight Line Feature Class parameter value:

    • OID_OBSERV—The Object ID of the observer point used to create the sight line
    • OID_TARGET—The Object ID of the target point used to create the sight line
    • TarIsVis—Indicates whether the target is visible (1) or not visible (0) to the observer along each sight line
    • AZIMUTH—The azimuth from the observer location to the target
    • VERT_ANGLE—The viewing angle looking up or down (negative) from the observer to the target
  • The following fields are added to the Output Line Of Sight Feature Class parameter value:

    • OID_OBSERV—The Object ID of the observer point used to create the sight line
    • OID_TARGET—The Object ID of the target point used to create the sight line
    • VisCode—Indicates whether the surface segment is visible (1) or not visible (2) to the observer
    • TarIsVis—Indicates whether the target is visible (1) or not visible (0) to the observer along each sight line
    • AZIMUTH—The azimuth from the observer location to the target
    • ObsSPOT—The elevation of the observer
    • TgtSPOT—The elevation of the target
  • The following fields are added to the Output Observer Feature Class parameter value:

    • OID_OBSERV—The Object ID of the observer point used to create the sight line
    • OID_TARGET—The Object ID of the target point used to create the sight line
    • AZIMUTH—The azimuth from the observer location to the target
    • VERT_ANGLE—The viewing angle looking up or down (negative) from the observer to the target
    • TarIsVis—Indicates whether the target is visible (1) or not visible (0) to the observer along each sight line
    • Z—The surface elevation at the observer location
    • ObsSPOT—The elevation of the observer
  • The following fields are added to the Output Target Feature Class parameter value:

    • OID_OBSERV—The Object ID of the observer point used to create the sight line
    • OID_TARGET—The Object ID of the target point used to create the sight line
    • AZIMUTH—The azimuth from the observer location to the target
    • VERT_ANGLE—The viewing angle looking up or down (negative) from the observer to the target
    • TarIsVis—Indicates whether the target is visible (1) or not visible (0) to the observer along each sight line
    • Z—The surface elevation at the target location
    • TgtSPOT—The elevation of the target
  • Height units are in the units of the elevation surface.

  • The tool uses earth curvature and refractivity calculations if the input surface supports them.

  • If obstruction features are used, the resulting surface profile lines do not follow the surface profile but extend directly between observer and target. This changes the optional profile graph.

  • To access the optional profile graph, use the Explore tool to open the pop-up for the output line of sight feature's profile you want to view. Click the graph for a full-size view. The Explore tool is in the Navigate group on the Map tab.

Parameters

LabelExplanationData Type
Observers

The input observer points.

Feature Set
Targets

The input target points.

Feature Set
Input Elevation Surface

The input elevation raster surface.

Raster Layer; Mosaic Dataset; Mosaic Layer
Output Line Of Sight Feature Class

The output feature class showing lines of visible and nonvisible surface areas.

Feature Class
Output Sight Line Feature Class

The output line feature class showing the direct line of sight between observer and target.

Feature Class
Output Observer Feature Class

The output observer point feature class.

Feature Class
Output Target Feature Class

The output target point feature class.

Feature Class
Input Obstruction Features
(Optional)

The input multipatch feature that may obstruct the lines of sight.

Feature Layer
Observer Height Above Surface (meters)
(Optional)

The height that will be added to the surface elevation of the observer. The default is 2.

Double
Target Height Above Surface (meters)
(Optional)

The height that will be added to the surface elevation of the target. The default is 0.

Double
Add Profile Graph Attachment To Sight Line
(Optional)

Specifies whether the tool will add an attachment to the feature with the profile (cross section terrain graph) between observer and target.

  • No profile graphNo profile graph will be added. This is the default.
  • Adds a profile graphA profile graph will be added.
Boolean

Licensing information

  • Basic: No
  • Standard: No
  • Advanced: Yes

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