Creating contours

thomas_gwd
thomas_gwd Global Mapper User
edited April 2009 in Vector Data
How can we a create a contour line of z(water level) within a boundary polygon. Say if in within a boundary polygon we have 10 data with x, Y and z values. we want to draw the contour by extrapolating the existing z value to the entire area within the boundary polygon. pls help

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  • global_mapper
    global_mapper Administrator
    edited April 2009
    What you need to do is first add an elevation attribute to your boundary polygon that is your edge Z value (say 0 if it is sea level), then select the layer(s) containing your boundary polygon and your XYZ points in the Control Center, then right-click on them and select the option to generate an elevation grid (make sure to uncheck the box to flatten areas). Once that completes, you can use the File->Generate Contours menu command to generate contours lines of the necessary height from the generated grid.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • thomas_gwd
    thomas_gwd Global Mapper User
    edited April 2009
    Thankyou very much Mike. Shall come back with new queries
    Thomas

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