Feature request: Include Vertical/Z-axis in the "SHIFT - Shift (offset) selected features"


  • TRB426TRB426 Global Mapper User Posts: 14
    Example:  I created some breaklines from a point cloud.  Then I found I needed to shift the elevation of the point cloud (down by 0.1 ft), which is easily done by Right-clicking on the Layer name and selecting the tab "Alter Elevation. Values" and entering the shift value into the "Offset" field:

    But now my breaklines are still at the old, wrong elevation. The "Options" dialog Box for that layer does not have the "Alter Elevations" tab, so no way to shift them there.  I tried selecting all of my breaklines and right-clicking, selecting <Move/Reshape Feature(s)> <SHIFT - Shift(Offset) Selected Features>
    But as you can see in the above screen capture, there is no vertical/elevation/Z offset available.  
    I got it done by exporting the breaklines as 3D polylines to an AutCAD drawing, executing the MOVE command and moving the lines with a displacement of 0,0,-0.1 but it seems to me that there has to be an easier way within GM.

  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,255
    Hello Tim,

    We have an existing feature request (16087) to support shifting feature elevations on the SHIFT function dialog, and I have added your information to that request. At the moment, it is not scheduled for implementation, but having multiple users asking for the function will increase its priority.

    In the meantime, to modify elevation values in Global Mapper, you can
    • Select the feature in the Digitizer
    • Right-click and choose Edit Line Feature
    • On the Modify Feature Info window, click the Vertices... button
    • On the Feature Vertex List, select the vertices that you want to change (presumably all of them)
    • Right-click on the list and choose Apply an Offset to the Selected Elevations
    • On the Specify Offset window, type the amount you want to change the elevations by.
    • Click OK as needed to save the results
  • TRB426TRB426 Global Mapper User Posts: 14
    Hi Bob, 
    That sounds like a reasonable method, as long there aren't too many line to adjust.  I'll give it a try.
  • 946946 Global Mapper User Posts: 163Trusted User
    Also you could try this:

    Create a high resolution surface from your break-lines  with the slider to the left in order to have less interpolation.
    Alter elevation to that surface and after apply elevation from that to your break-lines.
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