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Junction / Elevation Grid

The Elevation Grid is used to define and manage elevation information around road junctions. It creates a grid based on the junction outline and allows elevation data to be recalculated when road geometry or elevation is changed.

Bottom toolbar: Advanced Tools category active; sub-toolbar with Elevation Grid tool selected

How to Use

  1. Click Advanced Tool from the toolbar.
  2. Select Junction / Elevation Grid from the sub-toolbar.
  3. All junctions on the map will be listed in the Junctions panel.
  4. Search for the required junction using its Junction ID or select it from the list.
  5. If a junction already has a grid, it will show Outline; otherwise, it will show No Outline.
  6. Select the required junction and click Draw Outline.
  7. Draw the junction outline anti-clockwise.
  8. Click Close Outline after completing the selection.
  9. Select the required grid size and smoothening value.
  10. Click Save.

Junction Outline Creation

The junction outline must be created in an anti-clockwise direction.

Action Description
Left Click Draw a yellow line along the road/lane.
Shift + Left Click Select a patch.
Right Click Draw a red line across the road.
Shift + Right Click Draw a red line across all lanes.
Ctrl + Shift + Right Click Draw a red line across a single lane.

Grid Management

The following actions are available for managing junction grids:

Action Description
Recalculate All Grids Recalculates all grids after road or elevation changes. This should be performed before exporting the map when road data has been modified.
Delete All Outlines Deletes all created junction grids.
Show All Outlines Displays all existing junction grids on the map. This is enabled by default.

Junction / Elevation Grid Detail Panel

Section / Element Description
Junction ID (J-0) Displays the ID of the selected junction.
Anchors Displays the anchors used to define the junction outline.
Draw outline Starts the process of creating the junction outline.
Undo Removes the most recent outline or anchor action.
Close outline Completes and closes the junction outline.
Clear Clears the current outline and selected anchors.
Grid Contains the grid configuration options for the junction.
Cell size Allows the user to select the grid cell size from the available options: 1 × 1, 0.5, and 0.25.
Cells – 22 × 21 Displays the number of cells generated for the current grid.
Visualize grid Shows or hides the generated grid on the map.
Smoothen Allows the user to adjust the smoothening level of the elevation grid using the slider.
Included Roads Lists the roads included in the junction grid.
Delete outline Deletes the existing junction outline.
Discard Discards the current changes without applying them.
Apply Applies and saves the current junction grid changes.
Junction / Elevation Grid detail panel screenshot
Junction / Elevation Grid detail panel: Junction ID, Anchors, Draw outline, Undo, Close outline, Clear, Grid cell size, Cells, Visualize grid, Smoothen, Included Roads, Delete outline, Discard, and Apply

Notes

  • Junction outlines must always be created in an anti-clockwise direction.