Distance scale problem

JFrostJFrost Global Mapper UserPosts: 1
edited July 2011 in Technical Support
Hello people! Suddenly the GM distance scale started to lie. Measure distance tool still works correctly though. What could be the problem?


global mapper scale problem.jpg


  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited July 2011
    What projection do you have active? Many projections are very distorted in at least one direction (usually the X direction), so it's not possible to have a distance scale that is accurate in every direction. The Measure Tool always measures the distance over the provided path so is always accurate.

    I'm guessing that your projection on the Projection tab of the Configuration dialog is set to something like Geographic or Mercator and you are not near the equator so the X direction is very distorted. Switching to a projection that is better suited for large-scale maps, like UTM, should solve this issue.

    Let me know if I can be of further assistance.


    Global Mapper Support
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