Checking prominence of a peak

MikeCMikeC Global Mapper UserPosts: 19Trusted User
edited September 2013 in Elevation Data
I need to checkout if topographic prominence of a hill top is greater than 150m. Basically, I would like to have map around a peak masked on all points which are lower than height 150 m lower than peak height. That would allow me to se if prominence is good enough.

More abut topographic prominence: Topographic prominence - Wikipedia, the free encyclopedia

Is this possible using GlobalMapper?

Comments

  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited September 2013
    I would suggest going to the Vertical Options tab of the Configuration dialog and enable water display at a height 150m below the hilltop elevation. Then you can easily visualize to see if any other connected summits pierce the water. Another option would be setting the minimum valid elevation for the layer to 150m below the hill top on the Alter Elevations tab of the Options dialog for the layer.

    Thanks,

    Mike
    Global Mapper Guru
    geohelp@bluemarblegeo.com
    Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation
  • MikeCMikeC Global Mapper User Posts: 19Trusted User
    edited September 2013
    That works. I tried with water level analysis but it did not help. Thanks.

    It is a bit difficult to use as I have to go onto config menz each time when I check a peak. It would be nice to have this as an tool: preset prominence and then click on map and it floods everything lower than set prominence.
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