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Linestring won't Snap to Point Cloud Points Reliably

  • 1.  Linestring won't Snap to Point Cloud Points Reliably

    Posted 10-14-2022 07:38
    Hello everyone, (originally posted as a Question and for some reason wouldn't let me reply or carry on thread, so I am reposting again as Discussion):

    Has anyone else had this problem?:

    When using the linestring command with the only snap selected being Point, when trying to select the next node in the linestring and selecting a point in the point cloud, the program will not select anything.

    It seems like at first this is just a little glitchy, like if I select the point cloud point 0.02 feet away it will grab it and add the next node to the linestring, but it just gets worse, until finally point cloud points anywhere don't work, i can't get TBC to pick any point cloud point and i have to exit the command and eventually the program.

    I think someone on our survey team has mentioned this before or maybe I read a thread about it, or another site had and discussion group that was talking about it.

    Does anyone else ever have this happen on a chronic level?

    If so, anyone know the cause and, of course, most importantly, the solution.

    Thank you for the input.

    Response to Date:
    Marian Plucinski posted 10-14-2022 00:02
    I have a lot of problems with snaps.

    Tell me, are you working in 3D view? Is your Vertical Exaggeration set to more than 1.0?
    If so, open brand new 3D View and do not change VE, leave it on 1.0

    I've noticed that VE works on 3D objects, but not on the points/vertices. 
    (e.g. change to VE scales the line on the screen, but not the location where snaps will actually work)


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    Clayton Bradshaw
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  • 2.  RE: Linestring won't Snap to Point Cloud Points Reliably

    Posted 10-14-2022 07:41
    Clayton's response to Marian's response:

    Well I am sort of glad I am not crazy.  I confirmed with a co-worker that this has been an ongoing, longstanding problem with TBC (or our successful use of TBC, right?  It could be our fault, I guess.)

    This happens in 3D view.  We don't draft a lot on the point cloud in 2D.  We draft almost always linestrings.  We don't use vertical exaggeration.

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    Clayton Bradshaw
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  • 3.  RE: Linestring won't Snap to Point Cloud Points Reliably

    Posted 10-14-2022 07:54
    I just ran a test.  I made it 20 minutes before TBC linestring command started not selecting obvious point cloud point nodes using the autosnap.

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    Clayton Bradshaw
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    Original Message


  • 4.  RE: Linestring won't Snap to Point Cloud Points Reliably

    Posted 10-20-2022 15:30
    This is definitely something that has been causing me problems lately, although with just creating single points.  We've certainly discussed it internally with no resolution so I'll reach out to some Trimble contacts for their input.

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    Dan Field
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