At 12:41 PM 8/16/01 -0700, you wrote:
>G'day again
>
>I have just downloaded some 250k DEMs from the USGS. They are compressed
>files with names like "winnemucca-w.gz". How do I go about converting
>these into something I can load into ERMapper. When I try to use WinZip to
>uncompress them it asks for the full name of the file being uncompressed
>including it's 3 character file extension. Does anyone know what the
>extension should be? Once I have them uncompressed, how to I get them into
>ERMapper?
When WinZip prompts for the filename, just remove the last dot,
click OK and Extract it. This will create a file that can be imported
in ER Mapper with Utilities/Import Image formats/USGS DEM. (If you have
many of these files, I can give you a free batch wizard to import them all.)
PS - Under Options->Miscellaneous in WinZip, it is usually a good
idea to turn off the "TAR file smart CR/LF conversion" option as this can
sometimes cause Tar'd files to be uncompressed incorrectly.
Regards,
Eric Augenstein
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