Zenith Angle Controls

These controls allow the user to enter or select a zenith angle (0 = vertical), provide the ability to modify the data and enable information regarding the source of the data to be displayed.

Type Action Functions
Standard Data Entry
  • Blank (No elevation to be computed) entry field is permitted.
  • Keyboard entry of a valid zenith angle.
  • Can snap/accept to an existing line segment that has elevations. The zenith angle of the line is in the sense, nearest point to furthest point snapped/accepted in the line segment selected.
  • Can snap/accept to two point objects that have elevations.
If either of the points accepted do not have an elevation, the control will be left blank.
  Data Modification
  • SPACE, F9
  • Add
  • Subtract
  • Multiply
  • Divide
  Data Transfer
  Tooltip
  • Displays the Point Identifiers if the elevation difference has been derived from existing points. These can be disabled or enabled via Edit Tool Tips.