POV-Ray : Newsgroups : povray.general : Earth heightfield, colormaps, etc... : Re: Earth heightfield, colormaps, etc... Server Time
4 Aug 2024 14:27:04 EDT (-0400)
  Re: Earth heightfield, colormaps, etc...  
From: Remco de Korte
Date: 15 Apr 2003 09:45:42
Message: <3E9C0CEF.8CA07A87@onwijs.com>
Xilo Musimene wrote:
> 
> > Well, that's what I did. The format is very straightforward. If you
> > download the four sectiosn, each section has several files, but you'll
> > only need the DEM file. It has the height data stored in 5400 rows and
> > 4800 colums, with 2 bytes for each pixel. Couldn't be simpler (also
> > couldn't be more bloated...).
> > If you have the four sections you can combine them to one fairly huge
> > heightfield - or at least cut out the part you need.
> 
> Good, I should get started right away!  Do you think the seperation can
> be seen or is the data perfectly cut?
> 
> And is there any more data I could read like coloration? DEM would be
> elevation, I see there are many other files also do you know what they
> are for?
> 
> Thanks!
>    Xilo

My guess is the sections will fit perfectly since these seem to be
cutouts from a huge database.
I have a documentation of the file formats I can send you. I think it
came from the same site I found the data so you could also check there. 
These are the included files:

   DEM        digital elevation model data
   HDR        header file for DEM
   DMW        world file
   STX        statistics file
   PRJ        projection information file
   GIF        shaded relief image
   SRC        source map
   SCH        header file for source map
I don't see any colour information, the GIF is just a representation of
the data in the DEM file.
The SRC-file funnily enough contains the source for the data for every
pixel. I don't see how that can help...

Cheers!

Remco


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