Global Mapper Pro

Oregon DEM (2 files)

paulp575
paulp575 Global Mapper UserTrusted User
edited November 2010 in Raster Data
I am downloading Oregon DEMs from this site:

ftp://159.121.106.159/elevation/DEM/baseline97/rawdems/45117/h/

Specifically I downloaded 5117h1 but am puzzled as to why there's two different files.
I've looked around their web site for help/readme files; found some, but didn't really help.

Anyone else seen this?

When I imported them into GM12 they look the same.

Trying to find out the difference in the two files. There's no files - other than the DEM image that are part of the download.

In some cases - as with 5117H8 there's only the DF file so unless I can find anything different, I'm going to just download the DF file as I'm trying to make a mosiac of a bunch of the DEMs.

Thanks,

Comments

  • global_mapper
    global_mapper Administrator
    edited November 2010
    Paul,

    I'm not sure what the difference is supposed to be, but the DF file looks much better than the DG one, so I would go with that one.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
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