Global Mapper v26.0

Crossing contours.. big no no

mramend
mramend Global Mapper UserTrusted User
edited April 2008 in Bug Report
Hi there-

I have a 3m resolution XYZ terrain that I'd like to contour at 1m intervals then export as a DXF. My problem is that the contours produced cross each other on steep slopes. This is unacceptable for my processes so I have to use another package. Somewhat disappointing.

The relevant settings I'm using to contour are 3m resolution, 1m interval, line simplification of 0.29, line smoothing on. Interpolation is off for both the source grid (arc binary) and the contouring.

Version 9.00.

Cheers,
Mark A

Comments

  • global_mapper
    global_mapper Administrator
    edited March 2008
    Mark,

    Try turning off line simplification completely as it can cause crossings in very steep areas with a tight contour interval.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • mramend
    mramend Global Mapper User Trusted User
    edited April 2008
    I believe you meant to say to turn 'smoothing' off? You can't turn line simplification off from what I can see. I turned smoothing off and it still occurs.

    I also left the simplification slider at the default value of 0.50 and it also still occurs.

    -Mark
  • global_mapper
    global_mapper Administrator
    edited April 2008
    Mark,

    No I meant to turn simplification off. You can turn it off by sliding the simplification slider all the way to the left. You might try turning smoothing off as well if turning simplification does fix the problem.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

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