The Contour Layer enables users to draw cross section elevation profiles and illustrative (fiction) maps. The Contour Layer is a graphic effect which does not rely on data input. It is not intended for applications that require accuracy.
Add a Contour Layer
Choose Layer > New Contour Layer from the main menu.
Adding contours is much like painting them on your map canvas with your cursor.
- With the Contour layer active, press and drag the cursor around the map canvas, release. A contour is added.
- Press and drag again adds another contour and automatically adjusts existing contour lines if they push up against each other.
To Adjust the Contour Settings
The Contours dialog lets you adjust the following settings:
- Show (or hide) the cross-section (‘Section’) bar
- Switch the cross-section bar from horizontal to vertical
- Change base height
- Unit of measure
- Contour interval
- Line width
- Smooth or simplify contours
- Color of contours with positive or negative elevations
- Apply raise or lower terrain or cut valley tool actions
- Size of terrain tool
To View Cross-Sections of Elevation
- With the Contour layer active, drag the ‘Section’ bar across your map area. The elevations are shown in the cross-section interactively as the bar is dragged across the map.
- Use the ‘Contours’ dialog to switch the cross-section bar from horizontal to vertical.
To Remove (or Hide) a Contour Layer
Do one of the following:
- Click the “show/hide” icon (looks like an eye) from the layer list to hide (or show) the Contour layer.
- Delete the Contour layer.