Well, I did untar and uncompressed the files and I got a number of files :
>W020n40.dem     56 Mb
>W020n40.dmw
>W020n40.hdr
>W020n40.prj
>W020n40.sch
>W020n40.src    28 Mb
>W020n40.stx

I give the size for the largest files only. The others are only a few bytes
large.

I read the readme file, but it does not say how to handle the files.


I have the feeling that the DEM file is not a proper one ( The DEM extension
is not correct here).

I downloaded the file from :
http://edcdaac.usgs.gov/gtopo30/gtopo30.html






> >
> > Hi you all.
> >
> > I downloaded one so-called DEM files but did not manage to get anything

> > understand my nervousness. All the DEM utilities fail to read it ( and
> > the file is not corrupted as it is in a normal .tgz format and I can see
> > its content).
> >
> On second thought, are you using DEM files? What do you mean by "normal
> .tgz" format? Have you uncompressed and untar-ed it? When I worked with
> DEM files, then height information file was 80 MB + there was number of
> auxilary files. Seems like you haven't unpacked them...

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