Global Mapper v24.0

3D fly through bug? -nan(ind)

sjf Global Mapper User

Hi Mike,

I am generating 3D fly-throughs based on lidar data. All is well but I think there is a bug:

running 23.1 with updated to latest build.

When I edit the fly through path, the last velocity is filled with -nan(ind)

It will not run this way and I have to fil in a velocity. Everytime I open the table this last field is filled in with


Not a showstopper but annoying. But?



Best Answer

  • bmg_mike
    bmg_mike Global Mapper Guru
    Accepted Answer


    If you select the lines and simplify them with a simplify distance of 0 all duplicate vertices (and vertices along a straight line) should be removed.

    In any case, it should be fixed now in the 23.1 daily build, assuming the problem that I could create was what you were seeing.



  • bmg_mike
    bmg_mike Global Mapper Guru Moderator, Trusted User


    I was able to reproduce an issue with a display of 'inf' in the Velocity field when the flythrough path had a 0-length segment. There was a divide-by-zero happening. I'm guessing that is what is happening on your end, although I wasn't prevented from continuing in my case.

    Tomorrows' v23.1.x daily build should contain this update.



  • sjf
    sjf Global Mapper User

    Yes that could be it: I joined to segments. Maybe a 0-length segment remained.

    Can this be cleaned?

    Anyway: not critical, just one of these things to be aware of.



Sign In or Register to comment.