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DEM generation from contour line, boundary of shore line and GPS track file

vivy98vivy98 Global Mapper UserPosts: 2 ✭✭
edited January 2010 in Elevation Data
Hi,

I would like to generate DEM from contour line, boundary of shore line and GPS track files, the first two are in the same projection but the third one is in a different projection, may I know how can I generate a DEM based on all these 3 information?

Thanks.

Comments

  • global_mapperglobal_mapper Administrator Posts: 17,238BMG Staff
    edited January 2010
    Just load all 3 files, then open the Control Center, select all 3 files, then right-click and select the option to create an elevation grid. The data will all automatically be projected to your current projection as set on the Projection tab of the Configuration dialog, so it is fine to mix-and-match projections.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • vivy98vivy98 Global Mapper User Posts: 2 ✭✭
    edited January 2010
    Hi, Thanks for your reply.
    For the boundary file, it is specified as shoreline.
    The generated DEM doesn't cover the whole Island, there are empty areas from the lowest contour lines to shoreline, how shall I solve this issue?

    Thanks
  • global_mapperglobal_mapper Administrator Posts: 17,238BMG Staff
    edited January 2010
    What you need to do is edit the Shoreline feature and add an ELEVATION attribute with the shoreline elevation (like '0 m' if it is at sea level), then generate your elevation layer from the shoreline and other data.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
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