Cross Section

The Cross Section tool allows you to view the parts of the surface behind an intersecting vertical plane. You can opt to display the surface at a single point in time, or compare the surface between two points in time.

A cross sectional view of the surface is generated within the area defined by a supplied polygon or set of polygons, based on the supplied date or date range. You can set the orientation of the cross section plane and move the plane using the controls that appear in the view.

To create a cross section:

1. On the Home tab, make sure the Cross Section tool is expanded.

   

2. Select at least one polygon from the Polygon drop-down. The surface in the cross section view will be restricted to the area with the polygon.

3. Fill out the Start time and End time fields to specify the dates to show data for. Set these to the same date/time to show the surface at a single point in time, or set different dates to compare the surface between two points in time.

   You can also set the Start time and End time fields by dragging the yellow arrow heads in the timeline at the bottom of the viewer.

   

   • Hover over the timeline and use the mouse scroll wheel to zoom the timeline in or out. Alternatively, right click on the timeline and drag the mouse left or right.

   • Set the Start time by dragging the left yellow arrowhead, or by clicking a point on the timeline to the left of the timeline centrepoint.

   • Set the End time by dragging the right yellow arrowhead, or by clicking a point on the timeline to the right of the timeline centrepoint.

4. Click Generate.

   The view will enter cross section mode and controls appear in the view.

   

   Configure the cross section controls as follows:

   Orientation	Move the slider or enter an angle in degrees to set the orientation of the cross section plane. The angle is an offset in the XY plane from north.
   Distance	Drag the slider or enter a distance to move the cross section through the data. The distance is an offset from the centre of the data.
   Hide Terrain	Make sure this is selected to hide the surface terrain outside of the selected polygon; clear the checkbox to show the surface terrain. Cross section surfaces with terrain showing
   	Click the colour swatch next to a surface date/time to change the base colour for that surface.