LEGION Model Builder Help

To draw a visibility-based Analysis Zone for a segment

  1. Click the visibility drawing icon .
  2. Click the Analysis Zone icon .

    You are prompted to select 'Visibility for Point or Segment?

  3. For segment, type s and hit Return.
  4. Draw the segment as you would draw a line of CAD or the side of any object. Use the pan and zoom tools as normal if required. These screen shots illustrate the use of a segment across a visible shopfront.
    Tip: Drawing from left to right will create a directional arrow pointing up; drawing from right to left will create a directional arrow pointing down; drawing top to bottom will create a directional arrow pointing to the right; drawing bottom to top will create a directional arrow pointing to the left. Also, you can only draw your segment inside the model's accessible space. A dotted line is temporarily imposed on the model, delineating areas of accessible space.

    You are prompted to 'Move mouse to change distance'.

  5. To set the distance from where you wish to calculate the visibility of the segment, move the mouse to the required place and left-click to fix it. By dragging the visibility arrow, you can affect distance and direction. You can also type the distance coordinates (two figures are needed) directly into the Command bar if you prefer. This screen shot shows the segment drawn along one side of a retail unit. The arrow has been extended to the required visibility distance.

    You can now set the low and high angles from which your segment can be seen.

  6. To set the low angle, move your mouse to the required position and left-click.
  7. To set the opposite (high) angle, move your mouse to the required position and left-click.
  8. You can now review your settings and, if you need to make any adjustments, you can 'grab' the various distance and angle markers by clicking on them and moving them. They are highlighted in red, as in this screen shot.

    When you're happy with the shape of the Analysis Zone, hit Return. The ‘Edit Analysis Zone’ dialog box is displayed.

  9. Enter an appropriate name for the Analysis Zone and click OK.

    The new zone appears in the workspace and in the Object Directory, in the Analysis Layer.

  10. Repeat from step 2 for any more Visibility-based Analysis Zones you would like to place. To exit 'visibility mode', click the icon again.
Parent topic: Visibility-based Analysis Zones