Applicable plans
Valley Mountain Peak


You have created a Polyline or Boundary and you need to refine the location of vertices in all three axes. This section explain the process to accomplish those tasks.


Quick Guide

  1. Select the Polyline or Boundary.
  2. Go to the DRAWING TOOLS tab
  3. Select one of the Tools in the edit section
  4. You may now use the enabled options:
    1. Using On Terrain allows you to move your vertex while adjusting the Z to the terrain.
    2. Selecting XY will allow you to move your vertex on the XY plane and hold the Z value.
    3. Using the Z option will allow you to hold your XY location and adjust your Z location.




On Terrain:


As shown on the image below we made a bad pick while drawing a breakline on the edge of the pavement and we need to adjust this vertex. The On Terrain option allows movement in both the X-Y direction while the Z (elevation) follows the terrain.  

  1. Select the On Terrain option from the menu ribbon
  2. Select the vertex, and it will turn magenta in color


  1. Move the vertex to the desired location.



Note: You can see in the image above that the XY coordinate values boxes are not grayed out, and values may be entered in for the X and Y location if you need to specify a precise location. The Z value will still be "glued" to the terrain at the location specified.


Edit XY:


The XY option of the edit section allows you to move the  vertex in an XY plane while locking the the Z value (elevation). This option is very handy for holding the Z value while you adjust the horizontal location of a vertex such as adjusting the boundary of a proposed water surface elevation.


  1. Pick the XY option from the edit section of the ribbon.
  2. Select the vertex you want to move in the viewport.
  3. Begin moving the vertex and the translucent ochre grid will appear.


  1. The ochre grid is a horizontal plane at the Z value of your picked vertex.
  2. In the image below the vertex is moved to the intersection of the terrain with the the plane of the original Z value.


Note: You can see in the image above that the XY coordinate values boxes are not grayed out and values may be entered in for the X and Y location if you need to specify a precise location. The Z value will still be locked in at its original elevation.


Edit Z:


The option allows you to change the value or elevation of a vertex. It is also different from the other vertex editing options in that you may change the elevations of all the vertices at once.

  1. Select the Boundary or Polyline you want to edit.
  2. All of the vertices of the item will be initially selected.
  3. You may enter a value to adjust all of the Z values to a specific value.
  4. All the vertices will be set at the value you enter. Very useful for areas you want flat such as a pond.


  5. Select a single vertex and you can drag up and down as indicated by a brown line.
  6. When you select the vertex it will show the elevation in the box before you move the vertex.
  7. The line represents the vertical axis of the vertex. The line disappears into the terrain.
  8. Moving along the brown line is above the terrain and moving below the line is under the terrain.
  9. After you stop moving the vertex the final elevation will be displayed.


Note: You can see in the image above that the Z coordinate values box are not grayed out and and a specific value may be entered for the elevation. The XY location is locked.